{
 "version": "2.2",
 "instance": {
  "cnq-20251231.htm cnq-20251231_d2.htm": {
   "nsprefix": "cnq",
   "nsuri": "http://www.cnrl.com/20251231",
   "dts": {
    "inline": {
     "local": [
      "cnq-20251231.htm",
      "cnq-20251231_d2.htm"
     ]
    },
    "schema": {
     "local": [
      "cnq-20251231.xsd"
     ],
     "remote": [
      "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xl-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xlink-2003-12-31.xsd",
      "http://www.xbrl.org/2005/xbrldt-2005.xsd",
      "http://www.xbrl.org/2006/ref-2006-02-27.xsd",
      "http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/net-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/reference-2009-12-16.xsd",
      "https://www.xbrl.org/2020/extensible-enumerations-2.0.xsd",
      "https://www.xbrl.org/2023/calculation-1.1.xsd",
      "https://www.xbrl.org/dtr/type/2020-01-21/types.xsd",
      "https://www.xbrl.org/dtr/type/2022-03-31/types.xsd",
      "https://www.xbrl.org/dtr/type/2024-01-31/types.xsd",
      "https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd",
      "https://xbrl.fasb.org/srt/2025/elts/srt-roles-2025.xsd",
      "https://xbrl.fasb.org/srt/2025/elts/srt-types-2025.xsd",
      "https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/dimensions-ea/rol_ifrs_ea-dim_2025-03-27.xsd",
      "https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/dimensions/rol_full_ifrs-dim_2025-03-27.xsd",
      "https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd",
      "https://xbrl.sec.gov/country/2025/country-2025.xsd",
      "https://xbrl.sec.gov/currency/2025/currency-2025.xsd",
      "https://xbrl.sec.gov/dei/2025/dei-2025.xsd"
     ]
    },
    "calculationLink": {
     "local": [
      "cnq-20251231_cal.xml"
     ]
    },
    "definitionLink": {
     "local": [
      "cnq-20251231_def.xml"
     ],
     "remote": [
      "https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/dimensions-ea/dim_ifrs_ea_2025-03-27_role-995000.xml",
      "https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/dimensions/dim_full_ifrs_2025-03-27_role-995000.xml"
     ]
    },
    "labelLink": {
     "local": [
      "cnq-20251231_lab.xml"
     ]
    },
    "presentationLink": {
     "local": [
      "cnq-20251231_pre.xml"
     ]
    }
   },
   "keyStandard": 315,
   "keyCustom": 243,
   "axisStandard": 35,
   "axisCustom": 6,
   "memberStandard": 45,
   "memberCustom": 129,
   "hidden": {
    "total": 6,
    "http://xbrl.sec.gov/dei/2025": 5,
    "http://www.cnrl.com/20251231": 1
   },
   "contextCount": 851,
   "entityCount": 1,
   "segmentCount": 185,
   "elementCount": 939,
   "unitCount": 18,
   "baseTaxonomies": {
    "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full": 1523,
    "http://fasb.org/srt/2025": 464,
    "http://xbrl.sec.gov/dei/2025": 41
   },
   "report": {
    "R1": {
     "role": "http://www.cnrl.com/role/CoverPage",
     "longName": "0000001 - Document - Cover Page",
     "shortName": "Cover Page",
     "isDefault": "true",
     "groupType": "document",
     "subGroupType": "",
     "menuCat": "Cover",
     "order": "1",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "dei:DocumentType",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "dei:DocumentType",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R2": {
     "role": "http://www.cnrl.com/role/AuditInformation",
     "longName": "0000002 - Document - Audit Information",
     "shortName": "Audit Information",
     "isDefault": "false",
     "groupType": "document",
     "subGroupType": "",
     "menuCat": "Cover",
     "order": "2",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "dei:AuditorFirmId",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "dei:AuditorFirmId",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R3": {
     "role": "http://www.cnrl.com/role/ConsolidatedBalanceSheets",
     "longName": "9952151 - Statement - Consolidated Balance Sheets",
     "shortName": "Consolidated Balance Sheets",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "3",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:CashAndCashEquivalents",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfDetailedInformationAboutCapitalExplanatoryTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:CurrentTradeReceivables",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R4": {
     "role": "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
     "longName": "9952152 - Statement - Consolidated Statements of Earnings",
     "shortName": "Consolidated Statements of Earnings",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "4",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:RevenueFromSaleOfOilAndGasProducts",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R5": {
     "role": "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncome",
     "longName": "9952153 - Statement - Consolidated Statements of Comprehensive Income",
     "shortName": "Consolidated Statements of Comprehensive Income",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "5",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:ProfitLoss",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:GainsLossesOnCashFlowHedgesNetOfTax",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R6": {
     "role": "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncomeParenthetical",
     "longName": "9952154 - Statement - Consolidated Statements of Comprehensive Income (Parenthetical)",
     "shortName": "Consolidated Statements of Comprehensive Income (Parenthetical)",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "parenthetical",
     "menuCat": "Statements",
     "order": "6",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R7": {
     "role": "http://www.cnrl.com/role/ConsolidatedStatementsofChangesinEquity",
     "longName": "9952155 - Statement - Consolidated Statements of Changes in Equity",
     "shortName": "Consolidated Statements of Changes in Equity",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "7",
     "firstAnchor": {
      "contextRef": "c-14",
      "name": "ifrs-full:Equity",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-24",
      "name": "ifrs-full:Equity",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R8": {
     "role": "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows",
     "longName": "9952156 - Statement - Consolidated Statements of Cash Flows",
     "shortName": "Consolidated Statements of Cash Flows",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "8",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:ProfitLoss",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:AdjustmentsForDepreciationAndAmortisationExpense",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R9": {
     "role": "http://www.cnrl.com/role/ConsolidatedStatementsofEarningsParenthetical",
     "longName": "9952157 - Statement - Consolidated Statements of Earnings (Parenthetical)",
     "shortName": "Consolidated Statements of Earnings (Parenthetical)",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "parenthetical",
     "menuCat": "Statements",
     "order": "9",
     "firstAnchor": {
      "contextRef": "c-11",
      "name": "cnq:StockholdersEquityNoteStockSplitConversionRatio1",
      "unitRef": "number",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "INF",
      "ancestors": [
       "span",
       "div",
       "ifrs-full:DisclosureOfIndirectMeasurementOfFairValueOfGoodsOrServicesReceivedShareOptionsGrantedDuringPeriodExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R10": {
     "role": "http://www.cnrl.com/role/AccountingPolicies",
     "longName": "9952158 - Disclosure - Accounting Policies",
     "shortName": "Accounting Policies",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "10",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfMaterialAccountingPolicyInformationExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfMaterialAccountingPolicyInformationExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R11": {
     "role": "http://www.cnrl.com/role/AccountingStandardsIssuedButNotYetApplied",
     "longName": "9952159 - Disclosure - Accounting Standards Issued But Not Yet Applied",
     "shortName": "Accounting Standards Issued But Not Yet Applied",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "11",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R12": {
     "role": "http://www.cnrl.com/role/CriticalAccountingEstimatesandJudgements",
     "longName": "9952160 - Disclosure - Critical Accounting Estimates and Judgements",
     "shortName": "Critical Accounting Estimates and Judgements",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "12",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfAccountingJudgementsAndEstimatesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfAccountingJudgementsAndEstimatesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R13": {
     "role": "http://www.cnrl.com/role/Inventory",
     "longName": "9952161 - Disclosure - Inventory",
     "shortName": "Inventory",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "13",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfInventoriesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfInventoriesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R14": {
     "role": "http://www.cnrl.com/role/ExplorationandEvaluationAssets",
     "longName": "9952162 - Disclosure - Exploration and Evaluation Assets",
     "shortName": "Exploration and Evaluation Assets",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "14",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfExplorationAndEvaluationAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfExplorationAndEvaluationAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R15": {
     "role": "http://www.cnrl.com/role/PropertyPlantandEquipment",
     "longName": "9952163 - Disclosure - Property, Plant and Equipment",
     "shortName": "Property, Plant and Equipment",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "15",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R16": {
     "role": "http://www.cnrl.com/role/Leases",
     "longName": "9952164 - Disclosure - Leases",
     "shortName": "Leases",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "16",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfLeasesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfLeasesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R17": {
     "role": "http://www.cnrl.com/role/Investments",
     "longName": "9952165 - Disclosure - Investments",
     "shortName": "Investments",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "17",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R18": {
     "role": "http://www.cnrl.com/role/OtherLongTermAssets",
     "longName": "9952166 - Disclosure - Other Long-Term Assets",
     "shortName": "Other Long-Term Assets",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "18",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfOtherNoncurrentAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfOtherNoncurrentAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R19": {
     "role": "http://www.cnrl.com/role/LongTermDebt",
     "longName": "9952167 - Disclosure - Long-Term Debt",
     "shortName": "Long-Term Debt",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "19",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfBorrowingsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfBorrowingsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R20": {
     "role": "http://www.cnrl.com/role/OtherLongTermLiabilities",
     "longName": "9952168 - Disclosure - Other Long-Term Liabilities",
     "shortName": "Other Long-Term Liabilities",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "20",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfOtherNoncurrentLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfOtherNoncurrentLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R21": {
     "role": "http://www.cnrl.com/role/IncomeTaxes",
     "longName": "9952169 - Disclosure - Income Taxes",
     "shortName": "Income Taxes",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "21",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfIncomeTaxExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfIncomeTaxExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R22": {
     "role": "http://www.cnrl.com/role/ShareCapital",
     "longName": "9952170 - Disclosure - Share Capital",
     "shortName": "Share Capital",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "22",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfIssuedCapitalExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfIssuedCapitalExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R23": {
     "role": "http://www.cnrl.com/role/AccumulatedOtherComprehensiveIncome",
     "longName": "9952171 - Disclosure - Accumulated Other Comprehensive Income",
     "shortName": "Accumulated Other Comprehensive Income",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "23",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R24": {
     "role": "http://www.cnrl.com/role/CapitalDisclosures",
     "longName": "9952172 - Disclosure - Capital Disclosures",
     "shortName": "Capital Disclosures",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "24",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R25": {
     "role": "http://www.cnrl.com/role/NetEarningsPerCommonShare",
     "longName": "9952173 - Disclosure - Net Earnings Per Common Share",
     "shortName": "Net Earnings Per Common Share",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "25",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfEarningsPerShareExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfEarningsPerShareExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R26": {
     "role": "http://www.cnrl.com/role/InterestandOtherFinancingExpense",
     "longName": "9952174 - Disclosure - Interest and Other Financing Expense",
     "shortName": "Interest and Other Financing Expense",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "26",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfFinanceIncomeExpenseExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfFinanceIncomeExpenseExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R27": {
     "role": "http://www.cnrl.com/role/FinancialInstruments",
     "longName": "9952175 - Disclosure - Financial Instruments",
     "shortName": "Financial Instruments",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "27",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfFinancialInstrumentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfFinancialInstrumentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R28": {
     "role": "http://www.cnrl.com/role/CommitmentsandContingencies",
     "longName": "9952176 - Disclosure - Commitments and Contingencies",
     "shortName": "Commitments and Contingencies",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "28",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R29": {
     "role": "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformation",
     "longName": "9952177 - Disclosure - Supplemental Disclosure of Cash Flow Information",
     "shortName": "Supplemental Disclosure of Cash Flow Information",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "29",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfCashFlowStatementExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfCashFlowStatementExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R30": {
     "role": "http://www.cnrl.com/role/SegmentedInformation",
     "longName": "9952178 - Disclosure - Segmented Information",
     "shortName": "Segmented Information",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "30",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R31": {
     "role": "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagement",
     "longName": "9952179 - Disclosure - Remuneration of Directors and Senior Management",
     "shortName": "Remuneration of Directors and Senior Management",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "31",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfInformationAboutKeyManagementPersonnelExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfInformationAboutKeyManagementPersonnelExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R32": {
     "role": "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnaudited",
     "longName": "9952180 - Disclosure - Supplementary Oil And Gas Information (Unaudited)",
     "shortName": "Supplementary Oil And Gas Information (Unaudited)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "32",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfSupplementaryOilAndGasInformationExplanatoryTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfSupplementaryOilAndGasInformationExplanatoryTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "first": true,
      "unique": true
     }
    },
    "R33": {
     "role": "http://www.cnrl.com/role/AccountingPoliciesPolicies",
     "longName": "9955511 - Disclosure - Accounting Policies (Policies)",
     "shortName": "Accounting Policies (Policies)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "policies",
     "menuCat": "Policies",
     "order": "33",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:StatementOfIFRSCompliance",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:StatementOfIFRSCompliance",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R34": {
     "role": "http://www.cnrl.com/role/InventoryTables",
     "longName": "9955512 - Disclosure - Inventory (Tables)",
     "shortName": "Inventory (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "34",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfDetailedInformationAboutInventoriesExplanatoryTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfDetailedInformationAboutInventoriesExplanatoryTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R35": {
     "role": "http://www.cnrl.com/role/ExplorationandEvaluationAssetsTables",
     "longName": "9955513 - Disclosure - Exploration and Evaluation Assets (Tables)",
     "shortName": "Exploration and Evaluation Assets (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "35",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfDetailedInformationAboutExplorationAndEvaluationAssetsExplanatoryTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfDetailedInformationAboutExplorationAndEvaluationAssetsExplanatoryTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R36": {
     "role": "http://www.cnrl.com/role/PropertyPlantandEquipmentTables",
     "longName": "9955514 - Disclosure - Property, Plant and Equipment (Tables)",
     "shortName": "Property, Plant and Equipment (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "36",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R37": {
     "role": "http://www.cnrl.com/role/LeasesTables",
     "longName": "9955515 - Disclosure - Leases (Tables)",
     "shortName": "Leases (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "37",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R38": {
     "role": "http://www.cnrl.com/role/OtherLongTermAssetsTables",
     "longName": "9955516 - Disclosure - Other Long-Term Assets (Tables)",
     "shortName": "Other Long-Term Assets (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "38",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfInformationAboutOtherNonCurrentAssetsExplanatoryTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfInformationAboutOtherNonCurrentAssetsExplanatoryTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R39": {
     "role": "http://www.cnrl.com/role/LongTermDebtTables",
     "longName": "9955517 - Disclosure - Long-Term Debt (Tables)",
     "shortName": "Long-Term Debt (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "39",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R40": {
     "role": "http://www.cnrl.com/role/OtherLongTermLiabilitiesTables",
     "longName": "9955518 - Disclosure - Other Long-Term Liabilities (Tables)",
     "shortName": "Other Long-Term Liabilities (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "40",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfDetailedInformationAboutNonCurrentLiabilitiesExplanatoryTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfDetailedInformationAboutNonCurrentLiabilitiesExplanatoryTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R41": {
     "role": "http://www.cnrl.com/role/IncomeTaxesTables",
     "longName": "9955519 - Disclosure - Income Taxes (Tables)",
     "shortName": "Income Taxes (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "41",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfMajorComponentsOfTaxExpenseIncomeTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfMajorComponentsOfTaxExpenseIncomeTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R42": {
     "role": "http://www.cnrl.com/role/ShareCapitalTables",
     "longName": "9955520 - Disclosure - Share Capital (Tables)",
     "shortName": "Share Capital (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "42",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R43": {
     "role": "http://www.cnrl.com/role/AccumulatedOtherComprehensiveIncomeTables",
     "longName": "9955521 - Disclosure - Accumulated Other Comprehensive Income (Tables)",
     "shortName": "Accumulated Other Comprehensive Income (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "43",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfDetailedInformationAboutAccumulatedOtherComprehensiveIncomeExplanatoryTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfDetailedInformationAboutAccumulatedOtherComprehensiveIncomeExplanatoryTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R44": {
     "role": "http://www.cnrl.com/role/CapitalDisclosuresTables",
     "longName": "9955522 - Disclosure - Capital Disclosures (Tables)",
     "shortName": "Capital Disclosures (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "44",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfDetailedInformationAboutCapitalExplanatoryTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfDetailedInformationAboutCapitalExplanatoryTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R45": {
     "role": "http://www.cnrl.com/role/NetEarningsPerCommonShareTables",
     "longName": "9955523 - Disclosure - Net Earnings Per Common Share (Tables)",
     "shortName": "Net Earnings Per Common Share (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "45",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:EarningsPerShareExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:EarningsPerShareExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R46": {
     "role": "http://www.cnrl.com/role/InterestandOtherFinancingExpenseTables",
     "longName": "9955524 - Disclosure - Interest and Other Financing Expense (Tables)",
     "shortName": "Interest and Other Financing Expense (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "46",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfDetailedInformationAboutFinanceIncomeCostExplanatoryTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfDetailedInformationAboutFinanceIncomeCostExplanatoryTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R47": {
     "role": "http://www.cnrl.com/role/FinancialInstrumentsTables",
     "longName": "9955525 - Disclosure - Financial Instruments (Tables)",
     "shortName": "Financial Instruments (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "47",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfFinancialAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfFinancialAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R48": {
     "role": "http://www.cnrl.com/role/CommitmentsandContingenciesTables",
     "longName": "9955526 - Disclosure - Commitments and Contingencies (Tables)",
     "shortName": "Commitments and Contingencies (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "48",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfDetailedInformationAboutCommitmentsAndContingenciesExplanatoryTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfDetailedInformationAboutCommitmentsAndContingenciesExplanatoryTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R49": {
     "role": "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationTables",
     "longName": "9955527 - Disclosure - Supplemental Disclosure of Cash Flow Information (Tables)",
     "shortName": "Supplemental Disclosure of Cash Flow Information (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "49",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfDetailedInformationAboutCashFlowSupplementalDisclosuresTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DisclosureOfDetailedInformationAboutCashFlowSupplementalDisclosuresTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R50": {
     "role": "http://www.cnrl.com/role/SegmentedInformationTables",
     "longName": "9955528 - Disclosure - Segmented Information (Tables)",
     "shortName": "Segmented Information (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "50",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfOperatingSegmentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfOperatingSegmentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R51": {
     "role": "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagementTables",
     "longName": "9955529 - Disclosure - Remuneration of Directors and Senior Management (Tables)",
     "shortName": "Remuneration of Directors and Senior Management (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "51",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R52": {
     "role": "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTables",
     "longName": "9955530 - Disclosure - Supplementary Oil And Gas Information (Unaudited) (Tables)",
     "shortName": "Supplementary Oil And Gas Information (Unaudited) (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "52",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:ScheduleofTwelveMonthAverageBenchmarkPricesTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "cnq:DisclosureOfSupplementaryOilAndGasInformationExplanatoryTextBlock",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "cnq:ScheduleofTwelveMonthAverageBenchmarkPricesTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "cnq:DisclosureOfSupplementaryOilAndGasInformationExplanatoryTextBlock",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "first": true,
      "unique": true
     }
    },
    "R53": {
     "role": "http://www.cnrl.com/role/AccountingPoliciesDetails",
     "longName": "9955531 - Disclosure - Accounting Policies (Details)",
     "shortName": "Accounting Policies (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "53",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "cnq:OperatorOfJointOperationPercentOfLeaseAssetsAndLiabilitiesRecognized",
      "unitRef": "number",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "INF",
      "ancestors": [
       "span",
       "div",
       "ifrs-full:DescriptionOfAccountingPolicyForLeasesExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-3",
      "name": "cnq:OperatorOfJointOperationPercentOfLeaseAssetsAndLiabilitiesRecognized",
      "unitRef": "number",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "INF",
      "ancestors": [
       "span",
       "div",
       "ifrs-full:DescriptionOfAccountingPolicyForLeasesExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R54": {
     "role": "http://www.cnrl.com/role/CriticalAccountingEstimatesandJudgementsDetails",
     "longName": "9955532 - Disclosure - Critical Accounting Estimates and Judgements (Details)",
     "shortName": "Critical Accounting Estimates and Judgements (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "54",
     "firstAnchor": {
      "contextRef": "c-46",
      "name": "cnq:DiscountRateUsedInCurrentMeasurementOfHigherOfFairValueLessCostsOfDisposalOrPreviousEstimateOfValueInUse",
      "unitRef": "number",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "2",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-46",
      "name": "cnq:DiscountRateUsedInCurrentMeasurementOfHigherOfFairValueLessCostsOfDisposalOrPreviousEstimateOfValueInUse",
      "unitRef": "number",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "2",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R55": {
     "role": "http://www.cnrl.com/role/InventoryScheduleofInventoryDetails",
     "longName": "9955533 - Disclosure - Inventory - Schedule of Inventory (Details)",
     "shortName": "Inventory - Schedule of Inventory (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "55",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:CurrentCrudeOil",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfDetailedInformationAboutInventoriesExplanatoryTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:CurrentCrudeOil",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfDetailedInformationAboutInventoriesExplanatoryTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R56": {
     "role": "http://www.cnrl.com/role/InventoryNarrativeDetails",
     "longName": "9955534 - Disclosure - Inventory - Narrative (Details)",
     "shortName": "Inventory - Narrative (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "56",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:CostOfInventoriesRecognisedAsExpenseDuringPeriod",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-9",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:CostOfInventoriesRecognisedAsExpenseDuringPeriod",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-9",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R57": {
     "role": "http://www.cnrl.com/role/ExplorationandEvaluationAssetsDetailedInformationaboutExplorationandEvaluationAssetsDetails",
     "longName": "9955535 - Disclosure - Exploration and Evaluation Assets - Detailed Information about Exploration and Evaluation Assets (Details)",
     "shortName": "Exploration and Evaluation Assets - Detailed Information about Exploration and Evaluation Assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "57",
     "firstAnchor": {
      "contextRef": "c-4",
      "name": "ifrs-full:AssetsArisingFromExplorationForAndEvaluationOfMineralResources",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-39",
      "name": "ifrs-full:AssetsArisingFromExplorationForAndEvaluationOfMineralResources",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "cnq:DisclosureOfDetailedInformationAboutExplorationAndEvaluationAssetsExplanatoryTableTextBlock",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R58": {
     "role": "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
     "longName": "9955536 - Disclosure - Property, Plant and Equipment - Detailed Information About Property, Plant and Equipment (Details)",
     "shortName": "Property, Plant and Equipment - Detailed Information About Property, Plant and Equipment (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "58",
     "firstAnchor": {
      "contextRef": "c-4",
      "name": "ifrs-full:PropertyPlantAndEquipment",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-166",
      "name": "ifrs-full:PropertyPlantAndEquipment",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R59": {
     "role": "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
     "longName": "9955537 - Disclosure - Property, Plant and Equipment - ASOP Asset Swap Transaction Narrative (Details)",
     "shortName": "Property, Plant and Equipment - ASOP Asset Swap Transaction Narrative (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "59",
     "firstAnchor": {
      "contextRef": "c-181",
      "name": "cnq:BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeRemeasurementGainLoss",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-94",
      "name": "cnq:BusinessCombinationPercentageOfRemainingOwnershipAcquired",
      "unitRef": "number",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "2",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R60": {
     "role": "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails",
     "longName": "9955538 - Disclosure - Property, Plant and Equipment - Net Assets Acquired and Consideration Exchanged (Details)",
     "shortName": "Property, Plant and Equipment - Net Assets Acquired and Consideration Exchanged (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "60",
     "firstAnchor": {
      "contextRef": "c-181",
      "name": "cnq:BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeRemeasurementGainLoss",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-180",
      "name": "cnq:BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeCashRemeasurementGainLoss",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfDetailedInformationAboutBusinessCombinationsExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R61": {
     "role": "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails",
     "longName": "9955539 - Disclosure - Property, Plant and Equipment - Narrative (Details)",
     "shortName": "Property, Plant and Equipment - Narrative (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "61",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-196",
      "name": "ifrs-full:AcquisitiondateFairValueOfTotalConsiderationTransferred",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R62": {
     "role": "http://www.cnrl.com/role/PropertyPlantandEquipmentSummaryofNetAssetsAcquiredDetails",
     "longName": "9955540 - Disclosure - Property, Plant and Equipment - Summary of Net Assets Acquired (Details)",
     "shortName": "Property, Plant and Equipment - Summary of Net Assets Acquired (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "62",
     "firstAnchor": {
      "contextRef": "c-196",
      "name": "ifrs-full:PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDate",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfDetailedInformationAboutAssetAcquisitionTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-196",
      "name": "cnq:WorkingCapitalAssetsRecognizedAsOfAcquisitionDate",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfDetailedInformationAboutAssetAcquisitionTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R63": {
     "role": "http://www.cnrl.com/role/LeasesLeaseAssetsDetails",
     "longName": "9955541 - Disclosure - Leases - Lease Assets (Details)",
     "shortName": "Leases - Lease Assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "63",
     "firstAnchor": {
      "contextRef": "c-4",
      "name": "ifrs-full:RightofuseAssets",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:AdditionsToRightofuseAssets",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R64": {
     "role": "http://www.cnrl.com/role/LeasesScheduleofLeaseAssetsDetails",
     "longName": "9955542 - Disclosure - Leases - Schedule of Lease Assets (Details)",
     "shortName": "Leases - Schedule of Lease Assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "64",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:RightofuseAssets",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-166",
      "name": "ifrs-full:RightofuseAssets",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R65": {
     "role": "http://www.cnrl.com/role/LeasesScheduleofLeasesImpactonNetEarningsandCashFlowDetails",
     "longName": "9955543 - Disclosure - Leases - Schedule of Leases Impact on Net Earnings and Cash Flow (Details)",
     "shortName": "Leases - Schedule of Leases Impact on Net Earnings and Cash Flow (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "65",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:LeaseLiabilities",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfDetailedInformationAboutNonCurrentLiabilitiesExplanatoryTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:CurrentLeaseLiabilities",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R66": {
     "role": "http://www.cnrl.com/role/LeasesScheduleofLeaseLiabilitiesDetails",
     "longName": "9955544 - Disclosure - Leases - Schedule of Lease Liabilities (Details)",
     "shortName": "Leases - Schedule of Lease Liabilities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "66",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:ExpenseRelatingToShorttermLeasesForWhichRecognitionExemptionHasBeenUsed",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfAdditionalInformationAboutLeasingActivitiesForLesseeExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:ExpenseRelatingToShorttermLeasesForWhichRecognitionExemptionHasBeenUsed",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfAdditionalInformationAboutLeasingActivitiesForLesseeExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R67": {
     "role": "http://www.cnrl.com/role/InvestmentsDetails",
     "longName": "9955545 - Disclosure - Investments (Details)",
     "shortName": "Investments (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "67",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:GainsLossesOnInvestments",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-5",
      "name": "ifrs-full:GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "ix:continuation",
       "span",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R68": {
     "role": "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofOtherLongTermAssetsDetails",
     "longName": "9955546 - Disclosure - Other Long-Term Assets - Schedule of Other Long-Term Assets (Details)",
     "shortName": "Other Long-Term Assets - Schedule of Other Long-Term Assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "68",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:PrepaymentsAndAccruedIncomeIncludingContractAssets",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfInformationAboutOtherNonCurrentAssetsExplanatoryTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:PrepaymentsAndAccruedIncomeIncludingContractAssets",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfInformationAboutOtherNonCurrentAssetsExplanatoryTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R69": {
     "role": "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails",
     "longName": "9955547 - Disclosure - Other Long-Term Assets - Narrative (Details)",
     "shortName": "Other Long-Term Assets - Narrative (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "69",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:Borrowings",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfDetailedInformationAboutCapitalExplanatoryTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-224",
      "name": "cnq:TollPayerPercentForOthers",
      "unitRef": "number",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "2",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R70": {
     "role": "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofAssetsLiabilitiesPartnersEquityandEquityLossIncomeDetails",
     "longName": "9955548 - Disclosure - Other Long-Term Assets - Schedule of Assets, Liabilities, Partners' Equity and Equity (Loss) Income (Details)",
     "shortName": "Other Long-Term Assets - Schedule of Assets, Liabilities, Partners' Equity and Equity (Loss) Income (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "70",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:CurrentAssets",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-243",
      "name": "ifrs-full:Equity",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfInterestsInJointArrangementsExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R71": {
     "role": "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails",
     "longName": "9955549 - Disclosure - Long-Term Debt - Summary of Long-term Debt (Details)",
     "shortName": "Long-Term Debt - Summary of Long-term Debt (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "71",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:Borrowings",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfDetailedInformationAboutCapitalExplanatoryTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:ShorttermBorrowings",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R72": {
     "role": "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
     "longName": "9955550 - Disclosure - Long-Term Debt - Narrative (Details)",
     "shortName": "Long-Term Debt - Narrative (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "72",
     "firstAnchor": {
      "contextRef": "c-4",
      "name": "ifrs-full:Borrowings",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfDetailedInformationAboutCapitalExplanatoryTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-4",
      "name": "cnq:LettersOfCreditAndGuaranteesOutstandingAmount",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R73": {
     "role": "http://www.cnrl.com/role/LongTermDebtScheduleofDebtRepaymentsDetails",
     "longName": "9955551 - Disclosure - Long-Term Debt - Schedule of Debt Repayments (Details)",
     "shortName": "Long-Term Debt - Schedule of Debt Repayments (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "73",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:Borrowings",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfDetailedInformationAboutCapitalExplanatoryTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-353",
      "name": "ifrs-full:Borrowings",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:MaturityAnalysisForNonderivativeFinancialLiabilities",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R74": {
     "role": "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails",
     "longName": "9955552 - Disclosure - Other Long-Term Liabilities - Schedule of Other Long-Term Liabilities (Details)",
     "shortName": "Other Long-Term Liabilities - Schedule of Other Long-Term Liabilities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "74",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCosts",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-3",
      "name": "cnq:ProductTransportationAndProcessingObligation",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfDetailedInformationAboutNonCurrentLiabilitiesExplanatoryTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R75": {
     "role": "http://www.cnrl.com/role/OtherLongTermLiabilitiesNarrativeDetails",
     "longName": "9955553 - Disclosure - Other Long-Term Liabilities - Narrative (Details)",
     "shortName": "Other Long-Term Liabilities - Narrative (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "75",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DecommissioningRestorationAndRehabilitationLiabilitiesPeriodOfAccretion",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "cnq:DecommissioningRestorationAndRehabilitationLiabilitiesPeriodOfAccretion",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R76": {
     "role": "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails",
     "longName": "9955554 - Disclosure - Other Long-Term Liabilities - Asset Retirement Obligations (Details)",
     "shortName": "Other Long-Term Liabilities - Asset Retirement Obligations (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "76",
     "firstAnchor": {
      "contextRef": "c-4",
      "name": "ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCosts",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:ShorttermProvisionForDecommissioningRestorationAndRehabilitationCosts",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R77": {
     "role": "http://www.cnrl.com/role/OtherLongTermLiabilitiesSegmentedAssetRetirementObligationsDetails",
     "longName": "9955555 - Disclosure - Other Long-Term Liabilities - Segmented Asset Retirement Obligations (Details)",
     "shortName": "Other Long-Term Liabilities - Segmented Asset Retirement Obligations (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "77",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCosts",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-61",
      "name": "ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCosts",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R78": {
     "role": "http://www.cnrl.com/role/OtherLongTermLiabilitiesFutureCashOutflowRequiredtoSettleItsAssetRetirementObligationsDetails",
     "longName": "9955556 - Disclosure - Other Long-Term Liabilities - Future Cash Outflow Required to Settle Its Asset Retirement Obligations (Details)",
     "shortName": "Other Long-Term Liabilities - Future Cash Outflow Required to Settle Its Asset Retirement Obligations (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "78",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "cnq:ImpactOf1IncreaseInDiscountRateImpactOnAssetRetirementObligationLiability",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-3",
      "name": "cnq:ImpactOf1IncreaseInDiscountRateImpactOnAssetRetirementObligationLiability",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R79": {
     "role": "http://www.cnrl.com/role/OtherLongTermLiabilitiesShareBasedCompensationDetails",
     "longName": "9955557 - Disclosure - Other Long-Term Liabilities - Share-Based Compensation (Details)",
     "shortName": "Other Long-Term Liabilities - Share-Based Compensation (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "79",
     "firstAnchor": {
      "contextRef": "c-4",
      "name": "ifrs-full:LiabilitiesFromSharebasedPaymentTransactions2011",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfDetailedInformationAboutNonCurrentLiabilitiesExplanatoryTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:PaymentsOfOtherEquityInstruments",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R80": {
     "role": "http://www.cnrl.com/role/OtherLongTermLiabilitiesWeightedAverageAssumptionsusedtoCalculateShareBasedCompensationLiabilityDetails",
     "longName": "9955558 - Disclosure - Other Long-Term Liabilities - Weighted Average Assumptions used to Calculate Share-Based Compensation Liability (Details)",
     "shortName": "Other Long-Term Liabilities - Weighted Average Assumptions used to Calculate Share-Based Compensation Liability (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "80",
     "firstAnchor": {
      "contextRef": "c-11",
      "name": "cnq:StockholdersEquityNoteStockSplitConversionRatio1",
      "unitRef": "number",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "INF",
      "ancestors": [
       "span",
       "div",
       "ifrs-full:DisclosureOfIndirectMeasurementOfFairValueOfGoodsOrServicesReceivedShareOptionsGrantedDuringPeriodExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-368",
      "name": "cnq:WeightedAverageFairValueAtMeasurementDateShareOptionsGrantedPerShare",
      "unitRef": "cadPerShare",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "2",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfIndirectMeasurementOfFairValueOfGoodsOrServicesReceivedShareOptionsGrantedDuringPeriodExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R81": {
     "role": "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails",
     "longName": "9955559 - Disclosure - Income Taxes - Schedule of Provision for Income Tax (Details)",
     "shortName": "Income Taxes - Schedule of Provision for Income Tax (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "81",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:CurrentOtherTaxExpenseIncome",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfMajorComponentsOfTaxExpenseIncomeTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "cnq:CurrentOtherTaxExpenseIncome",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfMajorComponentsOfTaxExpenseIncomeTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R82": {
     "role": "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails",
     "longName": "9955560 - Disclosure - Income Taxes - Narrative (Details)",
     "shortName": "Income Taxes - Narrative (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "82",
     "firstAnchor": {
      "contextRef": "c-384",
      "name": "cnq:DeferredTaxExpenseIncomeRelatingToGainLossOnDisposition",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-384",
      "name": "cnq:DeferredTaxExpenseIncomeRelatingToGainLossOnDisposition",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R83": {
     "role": "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails",
     "longName": "9955561 - Disclosure - Income Taxes - Schedule of Provision For Income Tax Rate Reconciliation (Details)",
     "shortName": "Income Taxes - Schedule of Provision For Income Tax Rate Reconciliation (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "83",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:ApplicableTaxRate",
      "unitRef": "number",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "3",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAndAverageEffectiveTaxRateTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:ApplicableTaxRate",
      "unitRef": "number",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "3",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAndAverageEffectiveTaxRateTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R84": {
     "role": "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails",
     "longName": "9955562 - Disclosure - Income Taxes - Summary of Major Temporary Differences (Details)",
     "shortName": "Income Taxes - Summary of Major Temporary Differences (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "84",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:DeferredTaxLiabilities",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:DeferredTaxLiabilities",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R85": {
     "role": "http://www.cnrl.com/role/IncomeTaxesSummaryofMovementsinDeferredTaxAssetsandLiabilitiesDetails",
     "longName": "9955563 - Disclosure - Income Taxes - Summary of Movements in Deferred Tax Assets and Liabilities (Details)",
     "shortName": "Income Taxes - Summary of Movements in Deferred Tax Assets and Liabilities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "85",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-411",
      "name": "ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R86": {
     "role": "http://www.cnrl.com/role/IncomeTaxesSummaryofNetDeferredIncomeTaxLiabilityDetails",
     "longName": "9955564 - Disclosure - Income Taxes - Summary of Net Deferred Income Tax Liability (Details)",
     "shortName": "Income Taxes - Summary of Net Deferred Income Tax Liability (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "86",
     "firstAnchor": {
      "contextRef": "c-4",
      "name": "ifrs-full:DeferredTaxLiabilityAsset",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiabilityAsset",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R87": {
     "role": "http://www.cnrl.com/role/ShareCapitalOutstandingCommonSharesDetails",
     "longName": "9955565 - Disclosure - Share Capital - Outstanding Common Shares (Details)",
     "shortName": "Share Capital - Outstanding Common Shares (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "87",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement",
      "unitRef": "shares",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-3",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfShareOptionsExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-18",
      "name": "ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement",
      "unitRef": "shares",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-3",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R88": {
     "role": "http://www.cnrl.com/role/ShareCapitalNarrativeDetails",
     "longName": "9955566 - Disclosure - Share Capital - Narrative (Details)",
     "shortName": "Share Capital - Narrative (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "88",
     "firstAnchor": {
      "contextRef": "c-454",
      "name": "cnq:PercentageOfDividendIncreasedFromPreviousQuarterlyDividend",
      "unitRef": "number",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "2",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-454",
      "name": "cnq:PercentageOfDividendIncreasedFromPreviousQuarterlyDividend",
      "unitRef": "number",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "2",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R89": {
     "role": "http://www.cnrl.com/role/ShareCapitalStockOptionActivityDetails",
     "longName": "9955567 - Disclosure - Share Capital - Stock Option Activity (Details)",
     "shortName": "Share Capital - Stock Option Activity (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "89",
     "firstAnchor": {
      "contextRef": "c-4",
      "name": "ifrs-full:NumberOfOutstandingShareOptions",
      "unitRef": "shares",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-3",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfShareOptionsExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement",
      "unitRef": "shares",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-3",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfShareOptionsExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R90": {
     "role": "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails",
     "longName": "9955568 - Disclosure - Share Capital - Range of Exercise Prices of Stock Options (Details)",
     "shortName": "Share Capital - Range of Exercise Prices of Stock Options (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "90",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:NumberOfOutstandingShareOptions",
      "unitRef": "shares",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-3",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R91": {
     "role": "http://www.cnrl.com/role/AccumulatedOtherComprehensiveIncomeDetails",
     "longName": "9955569 - Disclosure - Accumulated Other Comprehensive Income (Details)",
     "shortName": "Accumulated Other Comprehensive Income (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "91",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "cnq:AccumulatedOtherComprehensiveIncomeNetOfTaxDerivativeInstrumentsDesignatedAsCashFlowHedges",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "cnq:DisclosureOfDetailedInformationAboutAccumulatedOtherComprehensiveIncomeExplanatoryTableTextBlock",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-3",
      "name": "cnq:AccumulatedOtherComprehensiveIncomeNetOfTaxDerivativeInstrumentsDesignatedAsCashFlowHedges",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "cnq:DisclosureOfDetailedInformationAboutAccumulatedOtherComprehensiveIncomeExplanatoryTableTextBlock",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R92": {
     "role": "http://www.cnrl.com/role/CapitalDisclosuresNarrativeDetails",
     "longName": "9955570 - Disclosure - Capital Disclosures - Narrative (Details)",
     "shortName": "Capital Disclosures - Narrative (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "92",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "cnq:DebtToBookCapitalizationRatio",
      "unitRef": "number",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "2",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-46",
      "name": "cnq:DebtToBookCapitalizationRatioTarget",
      "unitRef": "number",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "2",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R93": {
     "role": "http://www.cnrl.com/role/CapitalDisclosuresScheduleofDebttoBookCapitalizationRatioDetails",
     "longName": "9955571 - Disclosure - Capital Disclosures - Schedule of Debt to Book Capitalization Ratio (Details)",
     "shortName": "Capital Disclosures - Schedule of Debt to Book Capitalization Ratio (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "93",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:Borrowings",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfDetailedInformationAboutCapitalExplanatoryTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-3",
      "name": "cnq:BorrowingsNetOfCashAndCashEquivalents",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfDetailedInformationAboutCapitalExplanatoryTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R94": {
     "role": "http://www.cnrl.com/role/NetEarningsPerCommonShareScheduleofBasicandDilutedNetEarningsperCommonShareDetails",
     "longName": "9955572 - Disclosure - Net Earnings Per Common Share - Schedule of Basic and Diluted Net Earnings per Common Share (Details)",
     "shortName": "Net Earnings Per Common Share - Schedule of Basic and Diluted Net Earnings per Common Share (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "94",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:WeightedAverageShares",
      "unitRef": "shares",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-3",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:EarningsPerShareExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:WeightedAverageShares",
      "unitRef": "shares",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-3",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:EarningsPerShareExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R95": {
     "role": "http://www.cnrl.com/role/NetEarningsPerCommonShareNarrativeDetails",
     "longName": "9955573 - Disclosure - Net Earnings Per Common Share - Narrative (Details)",
     "shortName": "Net Earnings Per Common Share - Narrative (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "95",
     "firstAnchor": {
      "contextRef": "c-502",
      "name": "ifrs-full:NumberOfInstrumentsThatAreAntidilutiveInPeriodPresented",
      "unitRef": "shares",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "0",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-502",
      "name": "ifrs-full:NumberOfInstrumentsThatAreAntidilutiveInPeriodPresented",
      "unitRef": "shares",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "0",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R96": {
     "role": "http://www.cnrl.com/role/InterestandOtherFinancingExpenseDetails",
     "longName": "9955574 - Disclosure - Interest and Other Financing Expense (Details)",
     "shortName": "Interest and Other Financing Expense (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "96",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:InterestExpenseOnBorrowings",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "cnq:DisclosureOfDetailedInformationAboutFinanceIncomeCostExplanatoryTableTextBlock",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:InterestExpenseOnBorrowings",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "cnq:DisclosureOfDetailedInformationAboutFinanceIncomeCostExplanatoryTableTextBlock",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R97": {
     "role": "http://www.cnrl.com/role/FinancialInstrumentsEstimatedFairValuesofDerivativeFinancialInstrumentsIncludedinRiskManagementAssetDetails",
     "longName": "9955575 - Disclosure - Financial Instruments - Estimated Fair Values of Derivative Financial Instruments Included in Risk Management Asset (Details)",
     "shortName": "Financial Instruments - Estimated Fair Values of Derivative Financial Instruments Included in Risk Management Asset (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "97",
     "firstAnchor": {
      "contextRef": "c-4",
      "name": "cnq:DerivativeFinancialAssetsLiabilitiesNet",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "cnq:GainLossesOnChangeInFairValueOfUnsettledDerivativesIncludingFairValueMovementOfCommodityFinancialInstruments",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfFinancialLiabilitiesExplanatory",
       "ifrs-full:DisclosureOfFinancialAssetsExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R98": {
     "role": "http://www.cnrl.com/role/FinancialInstrumentsNetGainLossfromRiskManagementActivitiesDetails",
     "longName": "9955576 - Disclosure - Financial Instruments - Net (Gain) Loss from Risk Management Activities (Details)",
     "shortName": "Financial Instruments - Net (Gain) Loss from Risk Management Activities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "98",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:GainLossOnChangeInFairValueOfSettledDerivatives",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfDetailedInformationAboutFinancialInstrumentsExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R99": {
     "role": "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandFairValuesofFinancialInstrumentsDetails",
     "longName": "9955577 - Disclosure - Financial Instruments - Carrying Amounts and Fair Values of Financial Instruments (Details)",
     "shortName": "Financial Instruments - Carrying Amounts and Fair Values of Financial Instruments (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "99",
     "firstAnchor": {
      "contextRef": "c-505",
      "name": "ifrs-full:FinancialLiabilities",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-505",
      "name": "ifrs-full:FinancialLiabilities",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R100": {
     "role": "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails",
     "longName": "9955578 - Disclosure - Financial Instruments - Carrying Amounts and Reconciliation of Derivative Financial Instruments (Details)",
     "shortName": "Financial Instruments - Carrying Amounts and Reconciliation of Derivative Financial Instruments (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "100",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "cnq:DerivativeFinancialAssetsLiabilitiesHeldForTrading",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-3",
      "name": "cnq:DerivativeFinancialAssetsLiabilitiesHeldForTrading",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R101": {
     "role": "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractNarrativeDetails",
     "longName": "9955579 - Disclosure - Financial Instruments - Embedded Derivative Contract Narrative (Details)",
     "shortName": "Financial Instruments - Embedded Derivative Contract Narrative (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "101",
     "firstAnchor": {
      "contextRef": "c-5",
      "name": "cnq:DerivativeVolumePerDay",
      "unitRef": "mmbtu",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "INF",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-519",
      "name": "cnq:DerivativeVolumePerDay",
      "unitRef": "mmbtu",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-4",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R102": {
     "role": "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractDetails",
     "longName": "9955580 - Disclosure - Financial Instruments - Embedded Derivative Contract (Details)",
     "shortName": "Financial Instruments - Embedded Derivative Contract (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "102",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:NoncurrentDerivativeFinancialLiabilities",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-521",
      "name": "cnq:ForwardPrices",
      "unitRef": "usdpermmbtu",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "2",
      "ancestors": [
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfDerivativeFinancialInstrumentsExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R103": {
     "role": "http://www.cnrl.com/role/FinancialInstrumentsPriceandDiscountRateSensitivitiesDetails",
     "longName": "9955581 - Disclosure - Financial Instruments - Price and Discount Rate Sensitivities (Details)",
     "shortName": "Financial Instruments - Price and Discount Rate Sensitivities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "103",
     "firstAnchor": {
      "contextRef": "c-523",
      "name": "cnq:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnFairValue",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:SensitivityAnalysisForEachTypeOfMarketRisk",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-523",
      "name": "cnq:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnFairValue",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:SensitivityAnalysisForEachTypeOfMarketRisk",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R104": {
     "role": "http://www.cnrl.com/role/FinancialInstrumentsForeignCurrencyExchangeRateRiskManagementNarrativeDetails",
     "longName": "9955582 - Disclosure - Financial Instruments - Foreign Currency Exchange Rate Risk Management Narrative (Details)",
     "shortName": "Financial Instruments - Foreign Currency Exchange Rate Risk Management Narrative (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "104",
     "firstAnchor": {
      "contextRef": "c-527",
      "name": "ifrs-full:NotionalAmount",
      "unitRef": "usd",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-527",
      "name": "ifrs-full:NotionalAmount",
      "unitRef": "usd",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R105": {
     "role": "http://www.cnrl.com/role/FinancialInstrumentsFinancialInstrumentSensitivitiesDetails",
     "longName": "9955583 - Disclosure - Financial Instruments - Financial Instrument Sensitivities (Details)",
     "shortName": "Financial Instruments - Financial Instrument Sensitivities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "105",
     "firstAnchor": {
      "contextRef": "c-532",
      "name": "cnq:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariablePercent",
      "unitRef": "number",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "INF",
      "ancestors": [
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-532",
      "name": "cnq:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnNetProfitLoss",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R106": {
     "role": "http://www.cnrl.com/role/FinancialInstrumentsCounterpartyCreditRiskManagementNarrativeDetails",
     "longName": "9955584 - Disclosure - Financial Instruments - Counterparty Credit Risk Management Narrative (Details)",
     "shortName": "Financial Instruments - Counterparty Credit Risk Management Narrative (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "106",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "cnq:NumberOfCustomersWithRevenueConcentrationOfRisk",
      "unitRef": "customer",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "INF",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-3",
      "name": "cnq:NumberOfCustomersWithRevenueConcentrationOfRisk",
      "unitRef": "customer",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "INF",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R107": {
     "role": "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails",
     "longName": "9955585 - Disclosure - Financial Instruments - Maturity Dates for Financial Liabilities (Details)",
     "shortName": "Financial Instruments - Maturity Dates for Financial Liabilities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "107",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-538",
      "name": "ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R108": {
     "role": "http://www.cnrl.com/role/CommitmentsandContingenciesDetails",
     "longName": "9955586 - Disclosure - Commitments and Contingencies (Details)",
     "shortName": "Commitments and Contingencies (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "108",
     "firstAnchor": {
      "contextRef": "c-243",
      "name": "cnq:CommitmentsInRelationToJointVenturesInterestPayable",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-243",
      "name": "cnq:CommitmentsInRelationToJointVenturesInterestPayable",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R109": {
     "role": "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails",
     "longName": "9955587 - Disclosure - Supplemental Disclosure of Cash Flow Information - Supplemental Schedule of Cash Flow Information (Details)",
     "shortName": "Supplemental Disclosure of Cash Flow Information - Supplemental Schedule of Cash Flow Information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "109",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfDetailedInformationAboutCashFlowSupplementalDisclosuresTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfDetailedInformationAboutCashFlowSupplementalDisclosuresTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R110": {
     "role": "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationLiabilitiesArisingfromFinancingActivitiesDetails",
     "longName": "9955588 - Disclosure - Supplemental Disclosure of Cash Flow Information - Liabilities Arising from Financing Activities (Details)",
     "shortName": "Supplemental Disclosure of Cash Flow Information - Liabilities Arising from Financing Activities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "110",
     "firstAnchor": {
      "contextRef": "c-4",
      "name": "ifrs-full:LiabilitiesArisingFromFinancingActivities",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:IncreaseDecreaseThroughOtherChangesLiabilitiesArisingFromFinancingActivities",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ifrs-full:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesExplanatory",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R111": {
     "role": "http://www.cnrl.com/role/SegmentedInformationNarrativeDetails",
     "longName": "9955589 - Disclosure - Segmented Information - Narrative (Details)",
     "shortName": "Segmented Information - Narrative (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "111",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:NumberOfGeographicSegments",
      "unitRef": "segment",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "INF",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "cnq:NumberOfGeographicSegments",
      "unitRef": "segment",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "INF",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R112": {
     "role": "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
     "longName": "9955590 - Disclosure - Segmented Information - Operating Segments Earnings (Details)",
     "shortName": "Segmented Information - Operating Segments Earnings (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "112",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "ifrs-full:RevenueFromSaleOfOilAndGasProducts",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-697",
      "name": "ifrs-full:RoyaltyExpense",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R113": {
     "role": "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails",
     "longName": "9955591 - Disclosure - Segmented Information - Capital Expenditures (Details)",
     "shortName": "Segmented Information - Capital Expenditures (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "113",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:NetExpendituresProceedsExplorationForAndEvaluationOfMineralResources",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "cnq:NetExpendituresProceedsExplorationForAndEvaluationOfMineralResources",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R114": {
     "role": "http://www.cnrl.com/role/SegmentedInformationSegmentedAssetsDetails",
     "longName": "9955592 - Disclosure - Segmented Information - Segmented Assets (Details)",
     "shortName": "Segmented Information - Segmented Assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "114",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "ifrs-full:Assets",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-166",
      "name": "ifrs-full:Assets",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "unique": true
     }
    },
    "R115": {
     "role": "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagementDetails",
     "longName": "9955593 - Disclosure - Remuneration of Directors and Senior Management (Details)",
     "shortName": "Remuneration of Directors and Senior Management (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "115",
     "firstAnchor": {
      "contextRef": "c-709",
      "name": "ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesExplanatory",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-709",
      "name": "ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesExplanatory",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true,
      "unique": true
     }
    },
    "R116": {
     "role": "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails",
     "longName": "9955594 - Disclosure - Supplementary Oil And Gas Information (Unaudited) - Twelve Month Average Benchmark Prices (Details)",
     "shortName": "Supplementary Oil And Gas Information (Unaudited) - Twelve Month Average Benchmark Prices (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "116",
     "firstAnchor": {
      "contextRef": "c-733",
      "name": "ifrs-full:AverageForeignExchangeRate",
      "unitRef": "number",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "4",
      "ancestors": [
       "span",
       "div",
       "cnq:DisclosureOfSupplementaryOilAndGasInformationExplanatoryTextBlock",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-733",
      "name": "ifrs-full:AverageForeignExchangeRate",
      "unitRef": "number",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "4",
      "ancestors": [
       "span",
       "div",
       "cnq:DisclosureOfSupplementaryOilAndGasInformationExplanatoryTextBlock",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "first": true,
      "unique": true
     }
    },
    "R117": {
     "role": "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails",
     "longName": "9955595 - Disclosure - Supplementary Oil And Gas Information (Unaudited) - Proved and Proved Developed Oil and Natural Gas Liquids, Net of Royalties (Details)",
     "shortName": "Supplementary Oil And Gas Information (Unaudited) - Proved and Proved Developed Oil and Natural Gas Liquids, Net of Royalties (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "117",
     "firstAnchor": {
      "contextRef": "c-5",
      "name": "srt:ProvedDevelopedAndUndevelopedReservesSalesOfMineralsInPlace",
      "unitRef": "mmbbls",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "0",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-735",
      "name": "srt:ProvedDevelopedAndUndevelopedReservesNet",
      "unitRef": "mmbbls",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "0",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "srt:ScheduleOfProvedDevelopedAndUndevelopedOilAndGasReserveQuantitiesTextBlock",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "unique": true
     }
    },
    "R118": {
     "role": "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedOilandNaturalGasLiquidsNarrativeDetails",
     "longName": "9955596 - Disclosure - Supplementary Oil And Gas Information (Unaudited) - Oil and Natural Gas Liquids Narrative (Details)",
     "shortName": "Supplementary Oil And Gas Information (Unaudited) - Oil and Natural Gas Liquids Narrative (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "118",
     "firstAnchor": {
      "contextRef": "c-5",
      "name": "srt:ProvedDevelopedAndUndevelopedReservesSalesOfMineralsInPlace",
      "unitRef": "mmbbls",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "0",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-782",
      "name": "srt:ProvedDevelopedAndUndevelopedReservesNetPeriodIncreaseDecrease",
      "unitRef": "mmbbls",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "0",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "unique": true
     }
    },
    "R119": {
     "role": "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
     "longName": "9955597 - Disclosure - Supplementary Oil And Gas Information (Unaudited) - Proved and Proved Developed Natural Gas Reserve Quantities (Details)",
     "shortName": "Supplementary Oil And Gas Information (Unaudited) - Proved and Proved Developed Natural Gas Reserve Quantities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "119",
     "firstAnchor": {
      "contextRef": "c-5",
      "name": "srt:ProvedDevelopedAndUndevelopedReservesSalesOfMineralsInPlace",
      "unitRef": "mmbbls",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "0",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-794",
      "name": "srt:ProvedDevelopedAndUndevelopedReservesNet",
      "unitRef": "bcf",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "0",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "unique": true
     }
    },
    "R120": {
     "role": "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedNaturalGasNarrativeDetails",
     "longName": "9955598 - Disclosure - Supplementary Oil And Gas Information (Unaudited) - Natural Gas Narrative (Details)",
     "shortName": "Supplementary Oil And Gas Information (Unaudited) - Natural Gas Narrative (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "120",
     "firstAnchor": {
      "contextRef": "c-5",
      "name": "srt:ProvedDevelopedAndUndevelopedReservesSalesOfMineralsInPlace",
      "unitRef": "mmbbls",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "0",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-814",
      "name": "srt:ProvedDevelopedAndUndevelopedReservesNetPeriodIncreaseDecrease",
      "unitRef": "bcf",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "0",
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "unique": true
     }
    },
    "R121": {
     "role": "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails",
     "longName": "9955599 - Disclosure - Supplementary Oil And Gas Information (Unaudited) - Capitalized Costs Related to Crude Oil and Natural Gas Activities (Details)",
     "shortName": "Supplementary Oil And Gas Information (Unaudited) - Capitalized Costs Related to Crude Oil and Natural Gas Activities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "121",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "cnq:CapitalizedCostsProvedProperties1",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "cnq:CapitalizedCostsRelatingToOilAndGasProducingActivitiesDisclosure1TableTextBlock",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-3",
      "name": "cnq:CapitalizedCostsProvedProperties1",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "cnq:CapitalizedCostsRelatingToOilAndGasProducingActivitiesDisclosure1TableTextBlock",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "first": true,
      "unique": true
     }
    },
    "R122": {
     "role": "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCostsIncurredinCrudeOilandNaturalGasActivitiesDetails",
     "longName": "9955600 - Disclosure - Supplementary Oil And Gas Information (Unaudited) - Costs Incurred in Crude Oil and Natural Gas Activities (Details)",
     "shortName": "Supplementary Oil And Gas Information (Unaudited) - Costs Incurred in Crude Oil and Natural Gas Activities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "122",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves1",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "cnq:DisclosureOfDetailedInformationAboutCostsIncurredInCrudeOilAndNaturalGasActivitiesTableTextBlock",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "cnq:CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves1",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "cnq:DisclosureOfDetailedInformationAboutCostsIncurredInCrudeOilAndNaturalGasActivitiesTableTextBlock",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "first": true,
      "unique": true
     }
    },
    "R123": {
     "role": "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails",
     "longName": "9955601 - Disclosure - Supplementary Oil And Gas Information (Unaudited) - Results of Operations from Crude Oil and Natural Gas Producing Activities (Details)",
     "shortName": "Supplementary Oil And Gas Information (Unaudited) - Results of Operations from Crude Oil and Natural Gas Producing Activities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "123",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "cnq:CostOfSalesProductionExpense",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "c-843",
      "name": "cnq:CrudeOilAndNaturalGasRevenueNetOfRoyaltiesBlendingAndFeedstockCosts",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "cnq:DisclosureOfDetailedInformationAboutResultsOfOperationsFromCrudeOilAndNaturalGasActivitiesTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "unique": true
     }
    },
    "R124": {
     "role": "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails",
     "longName": "9955602 - Disclosure - Supplementary Oil And Gas Information (Unaudited) - Future Net Cash Flows Relating to Proved Crude Oil and Natural Gas Reserves (Details)",
     "shortName": "Supplementary Oil And Gas Information (Unaudited) - Future Net Cash Flows Relating to Proved Crude Oil and Natural Gas Reserves (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "124",
     "firstAnchor": {
      "contextRef": "c-3",
      "name": "srt:FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-3",
      "name": "srt:FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "first": true,
      "unique": true
     }
    },
    "R125": {
     "role": "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails",
     "longName": "9955603 - Disclosure - Supplementary Oil And Gas Information (Unaudited) - Sources of Change in the Standardized Measure of Discounted Future Net Cash Flows (Details)",
     "shortName": "Supplementary Oil And Gas Information (Unaudited) - Sources of Change in the Standardized Measure of Discounted Future Net Cash Flows (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "125",
     "firstAnchor": {
      "contextRef": "c-1",
      "name": "srt:SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "srt:ScheduleOfChangesInStandardizedMeasureOfDiscountedFutureNetCashFlowsTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "c-1",
      "name": "srt:SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts",
      "unitRef": "cad",
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "srt:ScheduleOfChangesInStandardizedMeasureOfDiscountedFutureNetCashFlowsTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "cnq-20251231_d2.htm",
      "first": true,
      "unique": true
     }
    }
   },
   "tag": {
    "cnq_A1DecreaseDiscountRateRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "A1DecreaseDiscountRateRiskMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsPriceandDiscountRateSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "1% decrease",
        "label": "1% Decrease Discount Rate Risk [Member]",
        "documentation": "1% Decrease Discount Rate Risk"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_A1IncreaseDiscountRateRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "A1IncreaseDiscountRateRiskMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsPriceandDiscountRateSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "1% increase",
        "label": "1% Increase Discount Rate Risk [Member]",
        "documentation": "1% Increase Discount Rate Risk"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_AOSPAssetSwapTransactionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AOSPAssetSwapTransactionMember",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "AOSP Asset Swap Transaction",
        "label": "AOSP Asset Swap Transaction [Member]",
        "documentation": "AOSP Asset Swap Transaction"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_AOSPMinesAndScotfordAndQuestMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AOSPMinesAndScotfordAndQuestMember",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "AOSP Mines and Scotford And Quest",
        "label": "AOSP Mines And Scotford And Quest [Member]",
        "documentation": "AOSP Mines And Scotford And Quest"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_AOSPMinesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AOSPMinesMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "ASOP Mines",
        "label": "AOSP Mines [Member]",
        "documentation": "AOSP Mines"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AccrualsClassifiedAsCurrent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AccrualsClassifiedAsCurrent",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_CurrentLiabilities",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets",
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Accrued liabilities",
        "label": "Accruals classified as current"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of accruals classified as current. [Refer: Accruals]"
       }
      }
     },
     "auth_ref": [
      "r436"
     ]
    },
    "ifrs-full_AccumulatedDepreciationAndAmortisationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AccumulatedDepreciationAndAmortisationMember",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Accumulated depletion and depreciation",
        "label": "Accumulated depreciation and amortisation [member]"
       }
      }
     },
     "auth_ref": [
      "r19",
      "r405",
      "r412",
      "r413",
      "r414"
     ]
    },
    "ifrs-full_AccumulatedOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AccumulatedOtherComprehensiveIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_Equity",
       "weight": 1.0,
       "order": 3.0
      },
      "http://www.cnrl.com/role/AccumulatedOtherComprehensiveIncomeDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/AccumulatedOtherComprehensiveIncomeDetails",
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Accumulated other comprehensive income",
        "totalLabel": "Accumulated other comprehensive income",
        "label": "Accumulated other comprehensive income"
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "ifrs-full_AccumulatedOtherComprehensiveIncomeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AccumulatedOtherComprehensiveIncomeMember",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofChangesinEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Accumulated other comprehensive income",
        "label": "Accumulated other comprehensive income [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for accumulated other comprehensive income. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r432"
     ]
    },
    "cnq_AccumulatedOtherComprehensiveIncomeNetOfTaxDerivativeInstrumentsDesignatedAsCashFlowHedges": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AccumulatedOtherComprehensiveIncomeNetOfTaxDerivativeInstrumentsDesignatedAsCashFlowHedges",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/AccumulatedOtherComprehensiveIncomeDetails": {
       "parentTag": "ifrs-full_AccumulatedOtherComprehensiveIncome",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/AccumulatedOtherComprehensiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Derivative financial instruments designated as cash flow hedges",
        "label": "Accumulated Other Comprehensive Income, Net Of Tax, Derivative Instruments Designated As Cash Flow Hedges",
        "documentation": "Accumulated Other Comprehensive Income, Net Of Tax, Derivative Instruments Designated As Cash Flow Hedges"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_AccumulatedOtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AccumulatedOtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/AccumulatedOtherComprehensiveIncomeDetails": {
       "parentTag": "ifrs-full_AccumulatedOtherComprehensiveIncome",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/AccumulatedOtherComprehensiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Foreign currency translation adjustment",
        "label": "Accumulated Other Comprehensive Income, Net Of Tax, Exchange Differences On Translation",
        "documentation": "Accumulated Other Comprehensive Income, Net Of Tax, Exchange Differences On Translation"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_AcquisitionPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AcquisitionPropertyPlantAndEquipment",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "AOSP mines acquisition",
        "label": "Acquisition Property \u200bPlant\u200b And\u200b Equipment",
        "documentation": "Acquisition Property \u200bPlant\u200b And\u200b Equipment"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AcquisitiondateFairValueOfTotalConsiderationTransferred",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Fair value, net of asset retirement obligation",
        "label": "Consideration transferred, acquisition-date fair value"
       }
      },
      "en": {
       "role": {
        "documentation": "The fair value, at acquisition date, of the consideration transferred in a business combination. [Refer: Total for all business combinations [member]]"
       }
      }
     },
     "auth_ref": [
      "r140",
      "r275"
     ]
    },
    "cnq_AcquisitionsThroughBusinessCombinationExplorationForAndEvaluationOfMineralResources": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AcquisitionsThroughBusinessCombinationExplorationForAndEvaluationOfMineralResources",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/ExplorationandEvaluationAssetsDetailedInformationaboutExplorationandEvaluationAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Acquisition of Chevron's assets",
        "label": "Acquisitions Through Business Combination, Exploration For And Evaluation Of Mineral Resources",
        "documentation": "Acquisitions Through Business Combination, Exploration For And Evaluation Of Mineral Resources"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AcquisitionsThroughBusinessCombinationsOtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AcquisitionsThroughBusinessCombinationsOtherProvisions",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Liabilities acquired, net",
        "label": "Acquisitions through business combinations, other provisions"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase in other provisions resulting from acquisitions through business combinations. [Refer: Total for all business combinations [member]; Other provisions]"
       }
      }
     },
     "auth_ref": [
      "r411"
     ]
    },
    "ifrs-full_AcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Acquisition of Chevron's assets",
        "label": "Acquisitions through business combinations, property, plant and equipment"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase in property, plant and equipment resulting from acquisitions through business combinations. [Refer: Total for all business combinations [member]; Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r13",
      "r238"
     ]
    },
    "ifrs-full_AdditionalInformationAboutSharebasedPaymentArrangements": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdditionalInformationAboutSharebasedPaymentArrangements",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Summary of Share-based Compensation Liability",
        "label": "Additional information about share-based payment arrangements [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "Additional information about share-based payment arrangements necessary to satisfy the disclosure requirements of IFRS 2. [Refer: Types of share-based payment arrangements [domain]]"
       }
      }
     },
     "auth_ref": [
      "r139"
     ]
    },
    "cnq_AdditionsAndAcquisitionsExplorationForAndEvaluationOfMineralResources": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AdditionsAndAcquisitionsExplorationForAndEvaluationOfMineralResources",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/ExplorationandEvaluationAssetsDetailedInformationaboutExplorationandEvaluationAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Additions/Acquisitions, net",
        "label": "Additions And Acquisitions, Exploration For And Evaluation Of Mineral Resources",
        "documentation": "Additions And Acquisitions, Exploration For And Evaluation Of Mineral Resources"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_AdditionsAndAcquisitionsPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AdditionsAndAcquisitionsPropertyPlantAndEquipment",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Additions/Acquisitions, net",
        "label": "Additions And Acquisitions, Property, Plant And Equipment",
        "documentation": "Additions And Acquisitions, Property, Plant And Equipment"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_AdditionsExplorationForAndEvaluationOfMineralResources": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AdditionsExplorationForAndEvaluationOfMineralResources",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/ExplorationandEvaluationAssetsDetailedInformationaboutExplorationandEvaluationAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Additions, net",
        "label": "Additions, Exploration For And Evaluation Of Mineral Resources",
        "documentation": "Additions, Exploration For And Evaluation Of Mineral Resources"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Additions",
        "label": "Additions other than through business combinations, property, plant and equipment"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of additions to property, plant and equipment other than those acquired through business combinations. [Refer: Total for all business combinations [member]; Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r11",
      "r236"
     ]
    },
    "ifrs-full_AdditionsToRightofuseAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdditionsToRightofuseAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/LeasesLeaseAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Additions",
        "label": "Additions to right-of-use assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of additions to right-of-use assets. [Refer: Right-of-use assets]"
       }
      }
     },
     "auth_ref": [
      "r109",
      "r205"
     ]
    },
    "dei_AddressTypeDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "AddressTypeDomain",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Address Type [Domain]",
        "label": "Address Type [Domain]",
        "documentation": "An entity may have several addresses for different purposes and this domain represents all such types."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdjustedWeightedAverageShares": {
     "xbrltype": "sharesItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdjustedWeightedAverageShares",
     "calculation": {
      "http://www.cnrl.com/role/NetEarningsPerCommonShareScheduleofBasicandDilutedNetEarningsperCommonShareDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/NetEarningsPerCommonShareScheduleofBasicandDilutedNetEarningsperCommonShareDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Weighted average common shares outstanding \u2013 diluted (thousands of shares) (in shares)",
        "label": "Weighted average number of ordinary shares used in calculating diluted earnings per share"
       }
      },
      "en": {
       "role": {
        "documentation": "The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]"
       }
      }
     },
     "auth_ref": [
      "r42"
     ]
    },
    "cnq_AdjustmentForDecommissioningRestorationAndRehabilitationCostsArisingFromThePassageOfTIme": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AdjustmentForDecommissioningRestorationAndRehabilitationCostsArisingFromThePassageOfTIme",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Asset retirement obligation accretion",
        "label": "Adjustment For Decommissioning, Restoration And Rehabilitation Costs Arising From The Passage Of TIme",
        "documentation": "Adjustment For Decommissioning, Restoration And Rehabilitation Costs Arising From The Passage Of TIme"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_AdjustmentForGainsLossesOnAcquisitionsOfPropertyPlantAndEquipmentExplorationAndEvaluationAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AdjustmentForGainsLossesOnAcquisitionsOfPropertyPlantAndEquipmentExplorationAndEvaluationAssets",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Gain on acquisitions, disposition, and remeasurement",
        "label": "Adjustment For Gains (Losses) On Acquisitions, Of Property, Plant And Equipment, Exploration And Evaluation Assets",
        "documentation": "Adjustment For Gains (Losses) On Acquisitions, Of Property, Plant And Equipment, Exploration And Evaluation Assets"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_AdjustmentsForDecreaseIncreaseInCurrentPrepaymentsAndOtherCurrentAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AdjustmentsForDecreaseIncreaseInCurrentPrepaymentsAndOtherCurrentAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails": {
       "parentTag": "ifrs-full_IncreaseDecreaseInWorkingCapital",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Prepaids and other",
        "label": "Adjustments For Decrease (Increase) In Current Prepayments And Other Current Assets",
        "documentation": "Adjustments For Decrease (Increase) In Current Prepayments And Other Current Assets"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_AdjustmentsForDecreaseIncreaseInCurrentTaxAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AdjustmentsForDecreaseIncreaseInCurrentTaxAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Current income tax liabilities",
        "label": "Adjustments For Decrease (Increase) In Current Tax Assets",
        "documentation": "Adjustments For Decrease (Increase) In Current Tax Assets"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdjustmentsForDecreaseIncreaseInInventories": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdjustmentsForDecreaseIncreaseInInventories",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails": {
       "parentTag": "ifrs-full_IncreaseDecreaseInWorkingCapital",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Inventory",
        "label": "Adjustments for decrease (increase) in inventories"
       }
      }
     },
     "auth_ref": [
      "r417"
     ]
    },
    "ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdjustmentsForDecreaseIncreaseInTradeAccountReceivable",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails": {
       "parentTag": "ifrs-full_IncreaseDecreaseInWorkingCapital",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Accounts receivable",
        "label": "Adjustments for decrease (increase) in trade accounts receivable"
       }
      }
     },
     "auth_ref": [
      "r417"
     ]
    },
    "ifrs-full_AdjustmentsForDeferredTaxExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdjustmentsForDeferredTaxExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Deferred income tax expense",
        "label": "Adjustments for deferred tax expense"
       }
      }
     },
     "auth_ref": [
      "r419"
     ]
    },
    "ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdjustmentsForDepreciationAndAmortisationExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Depletion, depreciation and amortization",
        "label": "Adjustments for depreciation and amortisation expense"
       }
      }
     },
     "auth_ref": [
      "r418"
     ]
    },
    "cnq_AdjustmentsForGainLossOnInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AdjustmentsForGainLossOnInvestments",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 13.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Gain from investment",
        "label": "Adjustments For Gain (Loss) On Investments",
        "documentation": "Adjustments For Gain (Loss) On Investments"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdjustmentsForGainsLossesOnChangeInFairValueOfDerivatives": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdjustmentsForGainsLossesOnChangeInFairValueOfDerivatives",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Unrealized risk management loss",
        "label": "Adjustments for gains (losses) on change in fair value of derivatives"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for gains (losses) on changes in the fair value of derivatives to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: At fair value [member]; Derivatives [member]; Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r419"
     ]
    },
    "cnq_AdjustmentsForIncreaseDecreaseInAccruedLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AdjustmentsForIncreaseDecreaseInAccruedLiabilities",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails": {
       "parentTag": "ifrs-full_IncreaseDecreaseInWorkingCapital",
       "weight": -1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Accrued liabilities",
        "label": "Adjustments For Increase (Decrease) In Accrued Liabilities",
        "documentation": "Adjustments For Increase (Decrease) In Accrued Liabilities"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_AdjustmentsForIncreaseDecreaseInCurrentTaxLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AdjustmentsForIncreaseDecreaseInCurrentTaxLiabilities",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails": {
       "parentTag": "ifrs-full_IncreaseDecreaseInWorkingCapital",
       "weight": -1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Adjustments For Increase (Decrease) In Current Tax Liabilities",
        "label": "Adjustments For Increase (Decrease) In Current Tax Liabilities",
        "documentation": "Adjustments For Increase (Decrease) In Current Tax Liabilities"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdjustmentsForIncreaseDecreaseInOtherLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdjustmentsForIncreaseDecreaseInOtherLiabilities",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails": {
       "parentTag": "ifrs-full_IncreaseDecreaseInWorkingCapital",
       "weight": -1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other long-term liabilities",
        "label": "Adjustments for increase (decrease) in other liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for increase (decrease) in other liabilities to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Other liabilities; Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r419"
     ]
    },
    "ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails": {
       "parentTag": "ifrs-full_IncreaseDecreaseInWorkingCapital",
       "weight": -1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Accounts payable",
        "label": "Adjustments for increase (decrease) in trade and other payables"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for increase (decrease) in trade and other payables to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Trade and other payables; Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r419"
     ]
    },
    "ifrs-full_AdjustmentsForReconcileProfitLossAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdjustmentsForReconcileProfitLossAbstract",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Non-cash items",
        "label": "Adjustments to reconcile profit (loss) [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdjustmentsForSharebasedPayments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdjustmentsForSharebasedPayments",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Share-based compensation",
        "label": "Adjustments for share-based payments"
       }
      }
     },
     "auth_ref": [
      "r418"
     ]
    },
    "ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdjustmentsForUnrealisedForeignExchangeLossesGains",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 12.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Unrealized foreign exchange (gain) loss",
        "label": "Adjustments for unrealised foreign exchange losses (gains)"
       }
      }
     },
     "auth_ref": [
      "r352",
      "r418"
     ]
    },
    "ifrs-full_AdministrativeExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdministrativeExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "Administration",
        "terseLabel": "Administration",
        "label": "Administrative expenses"
       }
      }
     },
     "auth_ref": [
      "r33",
      "r337",
      "r385"
     ]
    },
    "cnq_AlbertaNaturalGasReferenceLocationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AlbertaNaturalGasReferenceLocationMember",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "AECO",
        "label": "Alberta Natural Gas Reference Location [Member]",
        "documentation": "Alberta Natural Gas Reference Location [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "currency_AllCurrenciesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/currency/2025",
     "localname": "AllCurrenciesDomain",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "All Currencies [Domain]",
        "label": "All Currencies [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "dei_AmendmentFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "AmendmentFlag",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Amendment Flag",
        "label": "Amendment Flag",
        "documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission."
       }
      }
     },
     "auth_ref": []
    },
    "cnq_AnalysisOfOtherComprehensiveIncomeByItemAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AnalysisOfOtherComprehensiveIncomeByItemAbstract",
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Analysis Of Other Comprehensive Income By Item [Abstract]",
        "label": "Analysis Of Other Comprehensive Income By Item [Abstract]",
        "documentation": "Analysis Of Other Comprehensive Income By Item [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "dei_AnnualInformationForm": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "AnnualInformationForm",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Annual Information Form",
        "label": "Annual Information Form",
        "documentation": "Boolean flag with value true on a form if it is an annual report containing an annual information form."
       }
      }
     },
     "auth_ref": [
      "r398"
     ]
    },
    "ifrs-full_ApplicableTaxRate": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ApplicableTaxRate",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Canadian statutory income tax rate",
        "label": "Applicable tax rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The applicable income tax rate."
       }
      }
     },
     "auth_ref": [
      "r4",
      "r230"
     ]
    },
    "cnq_AssetAcquisitionAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AssetAcquisitionAxis",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentSummaryofNetAssetsAcquiredDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Asset Acquisition [Axis]",
        "label": "Asset Acquisition [Axis]",
        "documentation": "Asset Acquisition"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_AssetAcquisitionDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AssetAcquisitionDomain",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentSummaryofNetAssetsAcquiredDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Asset Acquisition [Domain]",
        "label": "Asset Acquisition [Domain]",
        "documentation": "Asset Acquisition"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_AssetRetirementObligationsRecognisedAsOfAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AssetRetirementObligationsRecognisedAsOfAcquisitionDate",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Asset retirement obligation, net assets acquired",
        "label": "Asset Retirement Obligations Recognised As Of Acquisition Date",
        "documentation": "Asset Retirement Obligations Recognised As Of Acquisition Date"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_Assets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Assets",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets",
      "http://www.cnrl.com/role/SegmentedInformationSegmentedAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Assets",
        "terseLabel": "Assets",
        "label": "Assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of a present economic resource controlled by the entity as a result of past events. Economic resource is a right that has the potential to produce economic benefits."
       }
      }
     },
     "auth_ref": [
      "r94",
      "r95",
      "r97",
      "r181",
      "r184",
      "r292",
      "r293",
      "r317"
     ]
    },
    "ifrs-full_AssetsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AssetsAbstract",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "ASSETS",
        "label": "Assets [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AssetsArisingFromExplorationForAndEvaluationOfMineralResources": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AssetsArisingFromExplorationForAndEvaluationOfMineralResources",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets",
      "http://www.cnrl.com/role/ExplorationandEvaluationAssetsDetailedInformationaboutExplorationandEvaluationAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Exploration and evaluation assets",
        "periodStartLabel": "Beginning balance",
        "periodEndLabel": "Ending balance",
        "label": "Assets arising from exploration for and evaluation of mineral resources"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of assets arising from the search for mineral resources, including minerals, oil, natural gas and similar non-regenerative resources after the entity has obtained legal rights to explore in a specific area, as well as the determination of the technical feasibility and commercial viability of extracting the mineral resource."
       }
      }
     },
     "auth_ref": [
      "r150"
     ]
    },
    "dei_AuditedAnnualFinancialStatements": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "AuditedAnnualFinancialStatements",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Audited Annual Financial Statements",
        "label": "Audited Annual Financial Statements",
        "documentation": "Boolean flag with value true on a form if it is an annual report containing audited financial statements."
       }
      }
     },
     "auth_ref": [
      "r398"
     ]
    },
    "dei_AuditorFirmId": {
     "xbrltype": "nonemptySequenceNumberItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "AuditorFirmId",
     "presentation": [
      "http://www.cnrl.com/role/AuditInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Auditor Firm ID",
        "label": "Auditor Firm ID",
        "documentation": "PCAOB issued Audit Firm Identifier"
       }
      }
     },
     "auth_ref": [
      "r396",
      "r397",
      "r398"
     ]
    },
    "cnq_AuditorInformationAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "AuditorInformationAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Auditor Information [Abstract]",
        "documentation": "Auditor Information"
       }
      }
     },
     "auth_ref": []
    },
    "dei_AuditorLocation": {
     "xbrltype": "internationalNameItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "AuditorLocation",
     "presentation": [
      "http://www.cnrl.com/role/AuditInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Auditor Location",
        "label": "Auditor Location"
       }
      }
     },
     "auth_ref": [
      "r396",
      "r397",
      "r398"
     ]
    },
    "dei_AuditorName": {
     "xbrltype": "internationalNameItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "AuditorName",
     "presentation": [
      "http://www.cnrl.com/role/AuditInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Auditor Name",
        "label": "Auditor Name"
       }
      }
     },
     "auth_ref": [
      "r396",
      "r397",
      "r398"
     ]
    },
    "ifrs-full_AverageForeignExchangeRate": {
     "xbrltype": "decimalItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AverageForeignExchangeRate",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "Average foreign exchange rate",
        "label": "Average foreign exchange rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The average exchange rate used by the entity. Exchange rate is the ratio of exchange for two currencies."
       }
      }
     },
     "auth_ref": [
      "r433"
     ]
    },
    "cnq_BankCreditFacilitiesAndCommercialPaperOutstandingMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BankCreditFacilitiesAndCommercialPaperOutstandingMember",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Bank Credit Facilities And Commercial Paper Outstanding",
        "label": "Bank Credit Facilities And Commercial Paper Outstanding [Member]",
        "documentation": "Bank Credit Facilities And Commercial Paper Outstanding"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BasicEarningsLossPerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BasicEarningsLossPerShare",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/NetEarningsPerCommonShareScheduleofBasicandDilutedNetEarningsperCommonShareDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Basic (in CAD per share)",
        "verboseLabel": "Net earnings per common share - basic (in CAD per share)",
        "label": "Basic earnings (loss) per share"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator)."
       }
      }
     },
     "auth_ref": [
      "r40",
      "r41"
     ]
    },
    "cnq_BitumenMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BitumenMember",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Bitumen",
        "label": "Bitumen [Member]",
        "documentation": "Bitumen [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BorrowingCostsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BorrowingCostsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Borrowing costs [abstract]",
        "label": "Borrowing costs [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_Borrowings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Borrowings",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/CapitalDisclosuresScheduleofDebttoBookCapitalizationRatioDetails": {
       "parentTag": "cnq_BorrowingsNetOfCashAndCashEquivalents",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/CapitalDisclosuresScheduleofDebttoBookCapitalizationRatioDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails",
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
      "http://www.cnrl.com/role/LongTermDebtScheduleofDebtRepaymentsDetails",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Borrowings",
        "totalLabel": "Borrowings",
        "verboseLabel": "Long-term debt",
        "label": "Borrowings"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of outstanding funds that the entity is obligated to repay."
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "cnq_BorrowingsAmountAuthorizedInBaseShelfProspectus": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BorrowingsAmountAuthorizedInBaseShelfProspectus",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Base shell prospectus borrowings, authorized",
        "label": "Borrowings, Amount Authorized In Base Shelf Prospectus",
        "documentation": "Borrowings, Amount Authorized In Base Shelf Prospectus"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BorrowingsAmountAvailableFromBaseShelfProspectus": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BorrowingsAmountAvailableFromBaseShelfProspectus",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Base shelf prospectus borrowings, available",
        "label": "Borrowings, Amount Available From Base Shelf Prospectus",
        "documentation": "Borrowings, Amount Available From Base Shelf Prospectus"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BorrowingsByNameAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BorrowingsByNameAxis",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Borrowings by name [axis]",
        "label": "Borrowings by name [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r424"
     ]
    },
    "ifrs-full_BorrowingsByNameDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BorrowingsByNameDomain",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Borrowings by name",
        "label": "Borrowings by name [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all borrowings when disaggregated by name. It also represents the standard value for the 'Borrowings by name' axis if no other member is used. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r424"
     ]
    },
    "ifrs-full_BorrowingsInterestRate": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BorrowingsInterestRate",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Borrowings, interest rate",
        "label": "Borrowings, interest rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The interest rate on borrowings. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r424"
     ]
    },
    "cnq_BorrowingsNetOfCashAndCashEquivalents": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BorrowingsNetOfCashAndCashEquivalents",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/CapitalDisclosuresScheduleofDebttoBookCapitalizationRatioDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/CapitalDisclosuresScheduleofDebttoBookCapitalizationRatioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Long-term debt, net",
        "label": "Borrowings, Net Of Cash And Cash Equivalents",
        "documentation": "Borrowings, Net Of Cash And Cash Equivalents"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BottomOfRangeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BottomOfRangeMember",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails",
      "http://www.cnrl.com/role/CapitalDisclosuresNarrativeDetails",
      "http://www.cnrl.com/role/CriticalAccountingEstimatesandJudgementsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractDetails",
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails",
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Bottom of range",
        "label": "Bottom of range [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the bottom of a range."
       }
      }
     },
     "auth_ref": [
      "r69",
      "r99",
      "r119",
      "r133",
      "r224",
      "r355",
      "r356",
      "r424"
     ]
    },
    "cnq_BritishColumbiaWestcoastStation2Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BritishColumbiaWestcoastStation2Member",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "BC Westcoast Station 2",
        "label": "British Columbia Westcoast Station 2 [Member]",
        "documentation": "British Columbia Westcoast Station 2 [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BusinessAcquisitionProFormaEarningsBeforeTaxIncludingDepletionDepreciationAndAmortization": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BusinessAcquisitionProFormaEarningsBeforeTaxIncludingDepletionDepreciationAndAmortization",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Business acquisition, pro forma earnings before tax, including depletion, depreciation and amortization",
        "label": "Business Acquisition, Pro Forma Earnings Before Tax, Including Depletion, Depreciation and Amortization",
        "documentation": "Business Acquisition, Pro Forma Earnings Before Tax, Including Depletion, Depreciation and Amortization"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeAssetRetirementObligationFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeAssetRetirementObligationFairValue",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Asset retirement obligation, purchase consideration and previously held interests",
        "label": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Asset Retirement Obligation, Fair Value",
        "documentation": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Asset Retirement Obligation, Fair Value"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeAssetRetirementObligationRemeasurementGainLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeAssetRetirementObligationRemeasurementGainLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Asset retirement obligation, net",
        "label": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Asset Retirement Obligation, Remeasurement, Gain (Loss)",
        "documentation": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Asset Retirement Obligation, Remeasurement, Gain (Loss)"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeCashFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeCashFairValue",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Cash, purchase consideration and previously held interests",
        "label": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Cash, Fair Value",
        "documentation": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Cash, Fair Value"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeCashRemeasurementGainLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeCashRemeasurementGainLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Cash, net",
        "label": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Cash, Remeasurement, Gain (Loss)",
        "documentation": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Cash, Remeasurement, Gain (Loss)"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeDeferredTaxLiabilityRemeasurementGainLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeDeferredTaxLiabilityRemeasurementGainLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Deferred income tax liability, net",
        "label": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Deferred Tax Liability, Remeasurement, Gain (Loss)",
        "documentation": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Deferred Tax Liability, Remeasurement, Gain (Loss)"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeFairValue",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Purchase consideration and previously held interests",
        "label": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Fair Value",
        "documentation": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Fair Value"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeLeaseAssetsRemeasurementGainGainLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeLeaseAssetsRemeasurementGainGainLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Lease assets, net",
        "label": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Lease Assets, Remeasurement Gain Gain (Loss)",
        "documentation": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Lease Assets, Remeasurement Gain Gain (Loss)"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeLeaseLiabilitiesRemeasurementGainLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeLeaseLiabilitiesRemeasurementGainLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Lease liabilities, net",
        "label": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Lease Liabilities, Remeasurement, Gain (Loss)",
        "documentation": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Lease Liabilities, Remeasurement, Gain (Loss)"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeOtherWorkingCapitalFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeOtherWorkingCapitalFairValue",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other working capital, purchase consideration and previously held interests",
        "label": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Other Working Capital, Fair Value",
        "documentation": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Other Working Capital, Fair Value"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeOtherWorkingCapitalRemeasurementGainLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeOtherWorkingCapitalRemeasurementGainLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other Working Capital, net",
        "label": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Other Working Capital, Remeasurement, Gain (Loss)",
        "documentation": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Other Working Capital, Remeasurement, Gain (Loss)"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireePropertyPlantAndEquipmentBeforeAssetRetirementObligationFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireePropertyPlantAndEquipmentBeforeAssetRetirementObligationFairValue",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Fair value of the Company's interests in the AOSP mines, purchase consideration and previously held interests",
        "label": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Property Plant And Equipment Before Asset Retirement Obligation, Fair Value",
        "documentation": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Property Plant And Equipment Before Asset Retirement Obligation, Fair Value"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireePropertyPlantAndEquipmentExcludingAssetRetirementObligationsRemeasurementGainLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireePropertyPlantAndEquipmentExcludingAssetRetirementObligationsRemeasurementGainLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Fair value of the Company's interests in the AOSP mines net",
        "label": "Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Property Plant And Equipment Excluding Asset Retirement Obligations, Remeasurement, Gain (Loss)",
        "documentation": "Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Property Plant And Equipment Excluding Asset Retirement Obligations, Remeasurement, Gain (Loss)"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireePropertyPlantAndEquipmentNetFairValue1": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireePropertyPlantAndEquipmentNetFairValue1",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Fair value, net of asset retirement obligation, purchase consideration and previously held interests",
        "terseLabel": "Fair value, net of asset retirement obligation, purchase consideration and previously held interests",
        "label": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Property Plant And Equipment Net, Fair Value1",
        "documentation": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Property Plant And Equipment Net, Fair Value1"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireePropertyPlantAndEquipmentRemeasurementGainLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireePropertyPlantAndEquipmentRemeasurementGainLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Fair value, net of asset retirement obligation, net",
        "label": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Property Plant And Equipment, Remeasurement, Gain (Loss)",
        "documentation": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Property Plant And Equipment, Remeasurement, Gain (Loss)"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeRemeasurementGainLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeRemeasurementGainLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Remeasurement gain",
        "label": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Remeasurement, Gain (Loss)",
        "documentation": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Remeasurement, Gain (Loss)"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeRemeasurementNonCashGainLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeRemeasurementNonCashGainLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Non-cash gain",
        "label": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Remeasurement, Non-Cash Gain (Loss)",
        "documentation": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Remeasurement, Non-Cash Gain (Loss)"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeRemeasurementNonCashGainLossAfterTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BusinessCombinationAchievedInStagesPreacquisitionEquityInterestInAcquireeRemeasurementNonCashGainLossAfterTax",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Loss (gain) on disposal of asset, after tax",
        "label": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Remeasurement, Non-Cash Gain (Loss), After Tax",
        "documentation": "Business Combination, Achieved In Stages, Preacquisition Equity Interest In Acquiree, Remeasurement, Non-Cash Gain (Loss), After Tax"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_BusinessCombinationPercentageOfRemainingOwnershipAcquired": {
     "xbrltype": "pureItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "BusinessCombinationPercentageOfRemainingOwnershipAcquired",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Remaining ownership percentage acquired",
        "label": "Business Combination, Percentage of Remaining Ownership Acquired",
        "documentation": "Business Combination, Percentage of Remaining Ownership Acquired"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BusinessCombinationsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BusinessCombinationsAxis",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails",
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails",
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Business combinations [axis]",
        "label": "Business combinations [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r143",
      "r276"
     ]
    },
    "ifrs-full_BusinessCombinationsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BusinessCombinationsDomain",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails",
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails",
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Business combinations [domain]",
        "label": "Business combinations [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Business combinations' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r143",
      "r146",
      "r276"
     ]
    },
    "dei_BusinessContactMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "BusinessContactMember",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Business Contact",
        "label": "Business Contact [Member]",
        "documentation": "Business contact for the entity"
       }
      }
     },
     "auth_ref": [
      "r397",
      "r398"
     ]
    },
    "cnq_CanadianDollarDenominatedDebtMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CanadianDollarDenominatedDebtMember",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Medium-term notes",
        "label": "Canadian Dollar Denominated Debt [Member]",
        "documentation": "Canadian Dollar Denominated Debt [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CanadianLightSweetMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CanadianLightSweetMember",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Canadian Light Sweet",
        "label": "Canadian Light Sweet [Member]",
        "documentation": "Canadian Light Sweet [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CapitalisedCostsExplorationForAndEvaluationOfMineralResources": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CapitalisedCostsExplorationForAndEvaluationOfMineralResources",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails": {
       "parentTag": "cnq_CapitalisedCostsExplorationForAndEvaluationOfMineralResourcesAndPropertyPlantAndEquipment",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Capitalized \u00a0costs",
        "label": "Capitalised Costs, Exploration For And Evaluation Of Mineral Resources",
        "documentation": "Capitalised Costs, Exploration For And Evaluation Of Mineral Resources"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CapitalisedCostsExplorationForAndEvaluationOfMineralResourcesAndPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CapitalisedCostsExplorationForAndEvaluationOfMineralResourcesAndPropertyPlantAndEquipment",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Total capitalised costs",
        "label": "Capitalised Costs, Exploration For And Evaluation Of Mineral Resources And Property, Plant and Equipment",
        "documentation": "Capitalised Costs, Exploration For And Evaluation Of Mineral Resources And Property, Plant and Equipment"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CapitalisedCostsPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CapitalisedCostsPropertyPlantAndEquipment",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails": {
       "parentTag": "cnq_CapitalisedCostsExplorationForAndEvaluationOfMineralResourcesAndPropertyPlantAndEquipment",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Capitalized \u00a0costs",
        "label": "Capitalised Costs, Property, Plant And Equipment",
        "documentation": "Capitalised Costs, Property, Plant And Equipment"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceRelatingToOilAndGasProducingActivities1": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceRelatingToOilAndGasProducingActivities1",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails": {
       "parentTag": "cnq_CapitalizedCostsOilAndGasProducingActivitiesGross1",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Less: accumulated depletion and depreciation",
        "label": "Capitalized Costs, Accumulated Depreciation, Depletion, Amortization And Valuation Allowance Relating To Oil And Gas Producing Activities1",
        "documentation": "Capitalized Costs, Accumulated Depreciation, Depletion, Amortization And Valuation Allowance Relating To Oil And Gas Producing Activities1"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CapitalizedCostsOilAndGasProducingActivitiesGross1": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CapitalizedCostsOilAndGasProducingActivitiesGross1",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      },
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails_1": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Capitalized costs, gross",
        "label": "Capitalized Costs, Oil And Gas Producing Activities, Gross1",
        "documentation": "Capitalized Costs, Oil And Gas Producing Activities, Gross1"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CapitalizedCostsOilAndGasProducingActivitiesNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CapitalizedCostsOilAndGasProducingActivitiesNet",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails": {
       "parentTag": "cnq_CapitalizedCostsOilAndGasProducingActivitiesGross1",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Net capitalized costs",
        "label": "Capitalized Costs, Oil And Gas Producing Activities, Net",
        "documentation": "Capitalized Costs, Oil And Gas Producing Activities, Net"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CapitalizedCostsProvedProperties1": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CapitalizedCostsProvedProperties1",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails_1": {
       "parentTag": "cnq_CapitalizedCostsOilAndGasProducingActivitiesGross1",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Proved properties",
        "label": "Capitalized Costs, Proved Properties1",
        "documentation": "Capitalized Costs, Proved Properties1"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CapitalizedCostsRelatingToOilAndGasProducingActivitiesByGeographicArea1LineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CapitalizedCostsRelatingToOilAndGasProducingActivitiesByGeographicArea1LineItems",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Capitalized Costs Relating To Oil And Gas Producing Activities, By Geographic Area1 [Line Items]",
        "label": "Capitalized Costs Relating To Oil And Gas Producing Activities, By Geographic Area1 [Line Items]",
        "documentation": "[Line Items] for Capitalized Costs Relating To Oil And Gas Producing Activities, By Geographic Area1 [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CapitalizedCostsRelatingToOilAndGasProducingActivitiesByGeographicArea1Table": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CapitalizedCostsRelatingToOilAndGasProducingActivitiesByGeographicArea1Table",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Capitalized Costs Relating To Oil And Gas Producing Activities, By Geographic Area1 [Table]",
        "label": "Capitalized Costs Relating To Oil And Gas Producing Activities, By Geographic Area1 [Table]",
        "documentation": "Capitalized Costs Relating To Oil And Gas Producing Activities, By Geographic Area1 [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CapitalizedCostsRelatingToOilAndGasProducingActivitiesDisclosure1TableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CapitalizedCostsRelatingToOilAndGasProducingActivitiesDisclosure1TableTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Schedule of Capitalized Costs Relating To Oil And Gas Producing Activities Disclosure",
        "label": "Capitalized Costs Relating To Oil And Gas Producing Activities Disclosure1 [Table Text Block]",
        "documentation": "Capitalized Costs Relating To Oil And Gas Producing Activities Disclosure1 [Table Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CapitalizedCostsUnprovedProperties1": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CapitalizedCostsUnprovedProperties1",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails_1": {
       "parentTag": "cnq_CapitalizedCostsOilAndGasProducingActivitiesGross1",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Unproved properties",
        "label": "Capitalized Costs, Unproved Properties1",
        "documentation": "Capitalized Costs, Unproved Properties1"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails",
      "http://www.cnrl.com/role/LongTermDebtScheduleofDebtRepaymentsDetails",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]",
        "label": "Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r10",
      "r16",
      "r56",
      "r57",
      "r59",
      "r60",
      "r61",
      "r62",
      "r63",
      "r145",
      "r165",
      "r166",
      "r235",
      "r240",
      "r257",
      "r258",
      "r259",
      "r260",
      "r261",
      "r262",
      "r263",
      "r277",
      "r286",
      "r287"
     ]
    },
    "ifrs-full_CarryingAmountMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CarryingAmountMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails",
      "http://www.cnrl.com/role/LongTermDebtScheduleofDebtRepaymentsDetails",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Carrying amount",
        "label": "Carrying amount [member]"
       }
      }
     },
     "auth_ref": [
      "r16",
      "r57",
      "r59",
      "r61",
      "r62",
      "r145",
      "r165",
      "r166",
      "r240",
      "r258",
      "r259",
      "r261",
      "r262",
      "r277",
      "r286",
      "r287"
     ]
    },
    "ifrs-full_CashAndCashEquivalents": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashAndCashEquivalents",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_CurrentAssets",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.cnrl.com/role/CapitalDisclosuresScheduleofDebttoBookCapitalizationRatioDetails": {
       "parentTag": "cnq_BorrowingsNetOfCashAndCashEquivalents",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/CapitalDisclosuresScheduleofDebttoBookCapitalizationRatioDetails",
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets",
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Cash and cash equivalents",
        "periodStartLabel": "Cash and cash equivalents \u2013 beginning of year",
        "periodEndLabel": "Cash and cash equivalents \u2013 end of year",
        "verboseLabel": "Less: cash and cash equivalents",
        "label": "Cash and cash equivalents"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]"
       }
      }
     },
     "auth_ref": [
      "r70",
      "r89",
      "r225",
      "r314"
     ]
    },
    "ifrs-full_CashAndCashEquivalentsRecognisedAsOfAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashAndCashEquivalentsRecognisedAsOfAcquisitionDate",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Cash, net assets acquired",
        "label": "Cash and cash equivalents recognised as of acquisition date"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount recognised as of the acquisition date for cash and cash equivalents acquired in a business combination. [Refer: Cash and cash equivalents; Total for all business combinations [member]]"
       }
      }
     },
     "auth_ref": [
      "r422"
     ]
    },
    "ifrs-full_CashFlowHedgesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashFlowHedgesAbstract",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Net change in derivative financial instruments designated as cash flow hedges",
        "label": "Cash flow hedges [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CashFlowHedgesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashFlowHedgesMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsForeignCurrencyExchangeRateRiskManagementNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Cash flow hedges",
        "label": "Cash flow hedges [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for hedges of the exposure to variability in cash flows that (a) are attributable to a particular risk associated with a recognised asset or liability (such as all or some future interest payments on variable rate debt) or a highly probable forecast transaction; and (b) could affect profit or loss. [Refer: Types of hedges [domain]]"
       }
      }
     },
     "auth_ref": [
      "r58",
      "r155",
      "r156",
      "r159",
      "r280",
      "r281",
      "r284"
     ]
    },
    "cnq_CashFlowsFromUsedInAcquisitionOfAssetsClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CashFlowsFromUsedInAcquisitionOfAssetsClassifiedAsInvestingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Acquisition of Chevron's assets",
        "label": "Cash Flows From (Used In), Acquisition Of Assets, Classified As Investing Activities",
        "documentation": "Cash Flows From (Used In), Acquisition Of Assets, Classified As Investing Activities"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CashFlowsFromUsedInExplorationForAndEvaluationOfMineralResourcesClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashFlowsFromUsedInExplorationForAndEvaluationOfMineralResourcesClassifiedAsInvestingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Net expenditures on exploration and evaluation assets",
        "label": "Cash flows from (used in) exploration for and evaluation of mineral resources, classified as investing activities"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash flows from (used in) the search for mineral resources, including minerals, oil, natural gas and similar non-regenerative resources after the entity has obtained legal rights to explore in a specific area, as well as the determination of the technical feasibility and commercial viability of extracting the mineral resource, classified as investing activities."
       }
      }
     },
     "auth_ref": [
      "r150"
     ]
    },
    "ifrs-full_CashFlowsFromUsedInFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashFlowsFromUsedInFinancingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_IncreaseDecreaseInCashAndCashEquivalents",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Cash flows used in financing activities",
        "label": "Cash flows from (used in) financing activities"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash flows from (used in) financing activities, which are activities that result in changes in the size and composition of the contributed equity and borrowings of the entity, from continuing and discontinued operations."
       }
      }
     },
     "auth_ref": [
      "r64",
      "r71"
     ]
    },
    "ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashFlowsFromUsedInFinancingActivitiesAbstract",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Financing activities",
        "label": "Cash flows from (used in) financing activities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CashFlowsFromUsedInInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashFlowsFromUsedInInvestingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_IncreaseDecreaseInCashAndCashEquivalents",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Cash flows used in investing activities",
        "label": "Cash flows from (used in) investing activities"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash flows from (used in) investing activities, which are the acquisition and disposal of long-term assets and other investments not included in cash equivalents, from continuing and discontinued operations."
       }
      }
     },
     "auth_ref": [
      "r64",
      "r71"
     ]
    },
    "ifrs-full_CashFlowsFromUsedInInvestingActivitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashFlowsFromUsedInInvestingActivitiesAbstract",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Investing activities",
        "label": "Cash flows from (used in) investing activities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CashFlowsFromUsedInOperatingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashFlowsFromUsedInOperatingActivities",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_IncreaseDecreaseInCashAndCashEquivalents",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Cash flows from operating activities",
        "label": "Cash flows from (used in) operating activities"
       }
      }
     },
     "auth_ref": [
      "r64",
      "r71"
     ]
    },
    "ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashFlowsFromUsedInOperatingActivitiesAbstract",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Operating activities",
        "label": "Cash flows from (used in) operating activities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CashFlowsFromUsedInPropertyPlantandEquipmentClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CashFlowsFromUsedInPropertyPlantandEquipmentClassifiedAsInvestingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Net expenditures on property, plant and equipment",
        "label": "Cash Flows From (Used In) Property, Plant and Equipment, Classified As Investing Activities",
        "documentation": "Cash Flows From (Used In) Property, Plant and Equipment, Classified As Investing Activities"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CashOutflowForLeases": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashOutflowForLeases",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/LeasesScheduleofLeaseLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Total cash outflows for leases",
        "label": "Cash outflow for leases"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for leases."
       }
      }
     },
     "auth_ref": [
      "r108",
      "r204"
     ]
    },
    "ifrs-full_CategoriesOfRelatedPartiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CategoriesOfRelatedPartiesAxis",
     "presentation": [
      "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Categories of related parties [axis]",
        "label": "Categories of related parties [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r32",
      "r247"
     ]
    },
    "ifrs-full_CategoriesOfRelatedPartiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CategoriesOfRelatedPartiesDomain",
     "presentation": [
      "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Categories of related parties [domain]",
        "label": "Categories of related parties [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Categories of related parties' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r32",
      "r247"
     ]
    },
    "cnq_CertainExecutivesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CertainExecutivesMember",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Certain Executives",
        "label": "Certain Executives [Member]",
        "documentation": "Certain Executives"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ChangesInLiabilitiesArisingFromFinancingActivitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ChangesInLiabilitiesArisingFromFinancingActivitiesAbstract",
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationLiabilitiesArisingfromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Changes from financing cash flows:",
        "label": "Changes in liabilities arising from financing activities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ChangesInNonCashWorkingCapitalAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ChangesInNonCashWorkingCapitalAbstract",
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Changes in Non-Cash Working Capital [Abstract]",
        "label": "Changes in Non-Cash Working Capital [Abstract]",
        "documentation": "Changes in Non-Cash Working Capital"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ChevronCanadaLimitedDirectAndIndirectWorkingInterestAOSPMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ChevronCanadaLimitedDirectAndIndirectWorkingInterestAOSPMember",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Chevron Canada Limited, Direct and Indirect Working Interest, AOSP",
        "label": "Chevron Canada Limited, Direct And Indirect Working Interest, AOSP [Member]",
        "documentation": "Chevron Canada Limited, Direct And Indirect Working Interest, AOSP"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ChevronCanadaLimitedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ChevronCanadaLimitedMember",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentSummaryofNetAssetsAcquiredDetails",
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Chevron Canada Limited",
        "label": "Chevron Canada Limited [Member]",
        "documentation": "Chevron Canada Limited"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ChevronCanadaLimitedOperatedWorkingInterestDuvernayAssetPlayInAlbertaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ChevronCanadaLimitedOperatedWorkingInterestDuvernayAssetPlayInAlbertaMember",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Chevron Canada Limited, Operated Working Interest, Duvernay Asset Play in Alberta",
        "label": "Chevron Canada Limited, Operated Working Interest, Duvernay Asset Play In Alberta [Member]",
        "documentation": "Chevron Canada Limited, Operated Working Interest, Duvernay Asset Play In Alberta"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ChevronCanadaLimitedWorkingInterestAOSPMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ChevronCanadaLimitedWorkingInterestAOSPMember",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Chevron Canada Limited, Working Interest, AOSP",
        "label": "Chevron Canada Limited, Working Interest, AOSP [Member]",
        "documentation": "Chevron Canada Limited, Working Interest, AOSP"
       }
      }
     },
     "auth_ref": []
    },
    "dei_CityAreaCode": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "CityAreaCode",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "City Area Code",
        "label": "City Area Code",
        "documentation": "Area code of city"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ClassesOfContingentLiabilitiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfContingentLiabilitiesAxis",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Classes of contingent liabilities [axis]",
        "label": "Classes of contingent liabilities [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r54",
      "r144",
      "r256"
     ]
    },
    "ifrs-full_ClassesOfContingentLiabilitiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfContingentLiabilitiesDomain",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Classes of contingent liabilities [domain]",
        "label": "Classes of contingent liabilities [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for possible obligations that arise from past events and whose existence will be confirmed only by the occurrence or non-occurrence of one or more uncertain future events not wholly within the control of the entity; or, present obligations that arise from past events but are not recognised because (a) it is probable that an outflow of resources embodying economic benefits will be required to settle the obligations; or (b) the amount of the obligations cannot be measured with sufficient reliability. It also represents the standard value for the 'Classes of contingent liabilities' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r55",
      "r144"
     ]
    },
    "ifrs-full_ClassesOfFinancialInstrumentsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfFinancialInstrumentsAxis",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsForeignCurrencyExchangeRateRiskManagementNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Classes of financial instruments [axis]",
        "label": "Classes of financial instruments [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r165",
      "r167",
      "r168",
      "r169",
      "r286",
      "r288"
     ]
    },
    "ifrs-full_ClassesOfFinancialInstrumentsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfFinancialInstrumentsDomain",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsForeignCurrencyExchangeRateRiskManagementNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Classes of financial instruments [domain]",
        "label": "Classes of financial instruments [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated classes of financial instruments. Financial instruments are contracts that give rise to a financial asset of one entity and a financial liability or equity instrument of another entity. It also represents the standard value for the 'Classes of financial instruments' axis if no other member is used. [Refer: Financial assets; Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r165",
      "r167",
      "r168",
      "r169",
      "r286",
      "r288"
     ]
    },
    "ifrs-full_ClassesOfFinancialLiabilitiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfFinancialLiabilitiesAxis",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandFairValuesofFinancialInstrumentsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractNarrativeDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsPriceandDiscountRateSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Classes of financial liabilities [axis]",
        "label": "Classes of financial liabilities [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r173",
      "r174",
      "r193",
      "r194"
     ]
    },
    "ifrs-full_ClassesOfFinancialLiabilitiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfFinancialLiabilitiesDomain",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandFairValuesofFinancialInstrumentsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractNarrativeDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsPriceandDiscountRateSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Classes of financial liabilities [domain]",
        "label": "Classes of financial liabilities [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated classes financial liabilities. It also represents the standard value for the 'Classes of financial liabilities' axis if no other member is used. [Refer: Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r173",
      "r174",
      "r193",
      "r194"
     ]
    },
    "ifrs-full_ClassesOfOtherProvisionsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfOtherProvisionsDomain",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Classes of other provisions [domain]",
        "label": "Classes of other provisions [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for provisions other than provisions for employee benefits. It also represents the standard value for the 'Classes of other provisions' axis if no other member is used. [Refer: Provisions]"
       }
      }
     },
     "auth_ref": [
      "r53",
      "r255"
     ]
    },
    "ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfPropertyPlantAndEquipmentAxis",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails",
      "http://www.cnrl.com/role/LeasesLeaseAssetsDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Classes of property, plant and equipment [axis]",
        "label": "Classes of property, plant and equipment [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r17",
      "r241"
     ]
    },
    "ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfPropertyPlantAndEquipmentDomain",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails",
      "http://www.cnrl.com/role/LeasesLeaseAssetsDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Classes of property, plant and equipment [domain]",
        "label": "Classes of property, plant and equipment [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Classes of property, plant and equipment' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r17",
      "r241"
     ]
    },
    "ifrs-full_ClassesOfProvisionsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfProvisionsAxis",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Classes of other provisions [axis]",
        "label": "Classes of other provisions [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r53",
      "r255"
     ]
    },
    "ifrs-full_ClassesOfShareCapitalAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfShareCapitalAxis",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofChangesinEquity",
      "http://www.cnrl.com/role/ShareCapitalOutstandingCommonSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Classes of share capital [axis]",
        "label": "Classes of share capital [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r218",
      "r296",
      "r326"
     ]
    },
    "ifrs-full_ClassesOfShareCapitalDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfShareCapitalDomain",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofChangesinEquity",
      "http://www.cnrl.com/role/ShareCapitalOutstandingCommonSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Classes of share capital [domain]",
        "label": "Classes of share capital [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for share capital of the entity. It also represents the standard value for the 'Classes of share capital' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r218",
      "r296",
      "r326"
     ]
    },
    "cnq_CommercialPaper1Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CommercialPaper1Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "Commercial Paper",
        "terseLabel": "Commercial paper (December 31, 2025 \u2013 US$nil; December 31, 2024 \u2013 US$467 million)",
        "label": "Commercial Paper1 [Member]",
        "documentation": "Commercial Paper1 [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CommitmentsForOilAndGasTransportationAndProcessing": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CommitmentsForOilAndGasTransportationAndProcessing",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Product transportation and processing",
        "label": "Commitments For Oil And Gas Transportation And Processing",
        "documentation": "Commitments For Oil And Gas Transportation And Processing"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CommitmentsForOilAndGasTransportationPeriodOfAgreement": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CommitmentsForOilAndGasTransportationPeriodOfAgreement",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Commitments for oil and gas transportation, period of agreement",
        "label": "Commitments For Oil And Gas Transportation, Period Of Agreement",
        "documentation": "Commitments For Oil And Gas Transportation, Period Of Agreement"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CommitmentsForOilAndGasTransportationPurchasesAndProcessing": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CommitmentsForOilAndGasTransportationPurchasesAndProcessing",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Product transportation, purchases and processing",
        "label": "Commitments For Oil And Gas Transportation, Purchases And Processing",
        "documentation": "Commitments For Oil And Gas Transportation, Purchases And Processing"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CommitmentsForPipelinePeriodOfAgreement": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CommitmentsForPipelinePeriodOfAgreement",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Commitments for pipeline, period of agreement",
        "label": "Commitments For Pipeline , Period Of Agreement",
        "documentation": "Commitments For Pipeline , Period Of Agreement"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CommitmentsForServiceToll": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CommitmentsForServiceToll",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "North West Redwater Partnership service toll",
        "label": "Commitments For Service Toll",
        "documentation": "Commitments For Service Toll"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CommitmentsInRelationToJointVenturesInterestPayable": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CommitmentsInRelationToJointVenturesInterestPayable",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Interest payable included in service toll",
        "label": "Commitments In Relation To Joint Ventures, Interest Payable",
        "documentation": "Commitments In Relation To Joint Ventures, Interest Payable"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CommitmentsInRelationToJointVenturesPercentageProRataShareOfMonthlyDebtCost": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CommitmentsInRelationToJointVenturesPercentageProRataShareOfMonthlyDebtCost",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofAssetsLiabilitiesPartnersEquityandEquityLossIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Percent of pro rata share of debt company has committed paying to joint venture, toll payer percent",
        "label": "Commitments In Relation To Joint Ventures, Percentage Pro Rata Share Of Monthly Debt Cost",
        "documentation": "Commitments In Relation To Joint Ventures, Percentage Pro Rata Share Of Monthly Debt Cost"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CommitmentsInRelationToJointVenturesTerm": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CommitmentsInRelationToJointVenturesTerm",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Term of commitment to joint venture",
        "label": "Commitments In Relation To Joint Ventures, Term",
        "documentation": "Commitments In Relation To Joint Ventures, Term"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CommittedCapacity": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CommittedCapacity",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Committed capacity",
        "label": "Committed Capacity",
        "documentation": "Committed Capacity"
       }
      }
     },
     "auth_ref": []
    },
    "srt_CommonDomainMembersAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "CommonDomainMembersAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Common Domain Members [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ComponentsOfEquityAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ComponentsOfEquityAxis",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofChangesinEquity",
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails",
      "http://www.cnrl.com/role/ShareCapitalOutstandingCommonSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Components of equity [axis]",
        "label": "Components of equity [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r304"
     ]
    },
    "ifrs-full_ComponentsOfEquityDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ComponentsOfEquityDomain",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofChangesinEquity",
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails",
      "http://www.cnrl.com/role/ShareCapitalOutstandingCommonSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Components of equity [domain]",
        "label": "Components of equity [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the residual interest in the assets of the entity after deducting all its liabilities. It also represents the standard value for the 'Components of equity' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r304"
     ]
    },
    "ifrs-full_ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Items that may be reclassified subsequently to net earnings",
        "label": "Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ComprehensiveIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncome": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Comprehensive income",
        "label": "Comprehensive income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of change in equity resulting from transactions and other events, other than those changes resulting from transactions with owners in their capacity as owners."
       }
      }
     },
     "auth_ref": [
      "r75",
      "r77",
      "r86",
      "r249",
      "r265",
      "r301",
      "r329",
      "r354"
     ]
    },
    "ifrs-full_ConstructionInProgress": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ConstructionInProgress",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Project costs not subject to depletion and depreciation",
        "label": "Construction in progress"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of expenditure capitalised during the construction of non-current assets that are not yet available for use. [Refer: Non-current assets]"
       }
      }
     },
     "auth_ref": [
      "r404"
     ]
    },
    "dei_ContactPersonnelName": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "ContactPersonnelName",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Contact Personnel Name",
        "label": "Contact Personnel Name",
        "documentation": "Name of contact personnel"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CorporateInformationAndStatementOfIFRSComplianceAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CorporateInformationAndStatementOfIFRSComplianceAbstract",
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Corporate Information And Statement Of IFRS Compliance [Abstract]",
        "label": "Corporate information and statement of IFRS compliance [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CorridorPipelineLeaseMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CorridorPipelineLeaseMember",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Corridor Pipeline Lease",
        "label": "Corridor Pipeline Lease [Member]",
        "documentation": "Corridor Pipeline Lease"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CorridorPipelineSoleContractedShipperMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CorridorPipelineSoleContractedShipperMember",
     "presentation": [
      "http://www.cnrl.com/role/LeasesLeaseAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Corridor Pipeline, Sole Contracted Shipper",
        "label": "Corridor Pipeline, Sole Contracted Shipper [Member]",
        "documentation": "Corridor Pipeline, Sole Contracted Shipper"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CostOfInventoriesRecognisedAsExpenseDuringPeriod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CostOfInventoriesRecognisedAsExpenseDuringPeriod",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/InventoryNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Cost of inventories recognised as expense during period",
        "label": "Cost of inventories recognised as expense during period"
       }
      }
     },
     "auth_ref": [
      "r24",
      "r221"
     ]
    },
    "cnq_CostOfSalesBlendingAndFeedstockExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CostOfSalesBlendingAndFeedstockExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": 1.0,
       "order": 12.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Blending and feedstock",
        "label": "Cost Of Sales, Blending, And Feedstock Expense",
        "documentation": "Cost Of Sales, Blending, And Feedstock Expense"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CostOfSalesProductionExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CostOfSalesProductionExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails": {
       "parentTag": "ifrs-full_GrossProfit",
       "weight": -1.0,
       "order": 2.0
      },
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Production",
        "negatedTerseLabel": "Production",
        "label": "Cost Of Sales, Production Expense",
        "documentation": "Cost Of Sales, Production Expense"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CostOfSalesTransportation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CostOfSalesTransportation",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails": {
       "parentTag": "ifrs-full_GrossProfit",
       "weight": -1.0,
       "order": 3.0
      },
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Transportation",
        "negatedTerseLabel": "Transportation",
        "label": "Cost Of Sales, Transportation",
        "documentation": "Cost Of Sales, Transportation"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CostOfSalesTransportationExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CostOfSalesTransportationExpense",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Transportation",
        "label": "Cost Of Sales, Transportation Expense",
        "documentation": "Cost Of Sales, Transportation Expense"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves1": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves1",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCostsIncurredinCrudeOilandNaturalGasActivitiesDetails": {
       "parentTag": "cnq_CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities1",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCostsIncurredinCrudeOilandNaturalGasActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Proved",
        "label": "Costs Incurred, Acquisition Of Oil And Gas Properties With Proved Reserves1",
        "documentation": "Costs Incurred, Acquisition Of Oil And Gas Properties With Proved Reserves1"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CostsIncurredAcquisitionOfUnprovedOilAndGasProperties1": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CostsIncurredAcquisitionOfUnprovedOilAndGasProperties1",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCostsIncurredinCrudeOilandNaturalGasActivitiesDetails": {
       "parentTag": "cnq_CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities1",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCostsIncurredinCrudeOilandNaturalGasActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Unproved",
        "label": "Costs Incurred, Acquisition Of Unproved Oil And Gas Properties1",
        "documentation": "Costs Incurred, Acquisition Of Unproved Oil And Gas Properties1"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CostsIncurredDevelopmentCosts1": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CostsIncurredDevelopmentCosts1",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCostsIncurredinCrudeOilandNaturalGasActivitiesDetails": {
       "parentTag": "cnq_CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities1",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCostsIncurredinCrudeOilandNaturalGasActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Development",
        "label": "Costs Incurred, Development Costs1",
        "documentation": "Costs Incurred, Development Costs1"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities1LineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities1LineItems",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCostsIncurredinCrudeOilandNaturalGasActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Costs Incurred In Oil And Gas Property Acquisition, Exploration, And Development Activities1 [Line Items]",
        "label": "Costs Incurred In Oil And Gas Property Acquisition, Exploration, And Development Activities1 [Line Items]",
        "documentation": "[Line Items] for Costs Incurred In Oil And Gas Property Acquisition, Exploration, And Development Activities1 [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities1Table": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities1Table",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCostsIncurredinCrudeOilandNaturalGasActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Costs Incurred In Oil And Gas Property Acquisition, Exploration, And Development Activities1 [Table]",
        "label": "Costs Incurred In Oil And Gas Property Acquisition, Exploration, And Development Activities1 [Table]",
        "documentation": "Costs Incurred In Oil And Gas Property Acquisition, Exploration, And Development Activities1 [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities1": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities1",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCostsIncurredinCrudeOilandNaturalGasActivitiesDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCostsIncurredinCrudeOilandNaturalGasActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Costs incurred",
        "label": "Costs Incurred, Oil And Gas Property Acquisition, Exploration, And Development Activities1",
        "documentation": "Costs Incurred, Oil And Gas Property Acquisition, Exploration, And Development Activities1"
       }
      }
     },
     "auth_ref": []
    },
    "srt_CounterpartyNameAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "CounterpartyNameAxis",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Counterparty Name [Axis]",
        "label": "Counterparty Name [Axis]",
        "documentation": "Information by name of counterparty. A counterparty is the other party that participates in a financial transaction. Examples include, but not limited to, the name of the financial institution."
       }
      }
     },
     "auth_ref": [
      "r195",
      "r196"
     ]
    },
    "dei_CoverAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "CoverAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Cover [Abstract]",
        "documentation": "Cover page."
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CreditFacilitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CreditFacilitiesMember",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Bank credit facilities",
        "label": "Credit Facilities [Member]",
        "documentation": "Credit Facilities [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CreditRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CreditRiskMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCounterpartyCreditRiskManagementNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Credit risk",
        "label": "Credit risk [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the risk that one party to a financial instrument will cause a financial loss for the other party by failing to discharge an obligation. [Refer: Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r120",
      "r121",
      "r122",
      "r366"
     ]
    },
    "cnq_CromerLightSourBlendMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CromerLightSourBlendMember",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Cromer LSB",
        "label": "Cromer Light Sour Blend [Member]",
        "documentation": "Cromer Light Sour Blend [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CrudeOilAndNaturalGasRevenueNetOfRoyaltiesBlendingAndFeedstockCosts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CrudeOilAndNaturalGasRevenueNetOfRoyaltiesBlendingAndFeedstockCosts",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails": {
       "parentTag": "ifrs-full_GrossProfit",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Crude oil and natural gas revenue, net of royalties, blending and feedstock costs",
        "label": "Crude Oil And Natural Gas Revenue, Net Of Royalties, Blending And Feedstock Costs",
        "documentation": "Crude Oil And Natural Gas Revenue, Net Of Royalties, Blending And Feedstock Costs"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CrudeOilGradeAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CrudeOilGradeAxis",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Crude Oil Grade [Axis]",
        "label": "Crude Oil Grade [Axis]",
        "documentation": "Crude Oil Grade [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CrudeOilGradeDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CrudeOilGradeDomain",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Crude Oil Grade [Domain]",
        "label": "Crude Oil Grade [Domain]",
        "documentation": "[Domain] for Crude Oil Grade [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "srt_CrudeOilMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "CrudeOilMember",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Crude Oil",
        "label": "Crude Oil [Member]",
        "documentation": "Unrefined, unprocessed oil, which may be used in a variety of applications, and from which, petroleum-based products are produced."
       }
      }
     },
     "auth_ref": [
      "r401",
      "r425",
      "r426"
     ]
    },
    "cnq_CrudeOilNaturalGasLiquidsNaturalGasOtherIncomeAndRevenueMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CrudeOilNaturalGasLiquidsNaturalGasOtherIncomeAndRevenueMember",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Crude Oil, Natural Gas Liquids, Natural Gas, Other Income And Revenue",
        "label": "Crude Oil, Natural Gas Liquids, Natural Gas, Other Income And Revenue [Member]",
        "documentation": "Crude Oil, Natural Gas Liquids, Natural Gas, Other Income And Revenue"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CumulativeUnrecognisedShareOfLossesOfJointVentures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CumulativeUnrecognisedShareOfLossesOfJointVentures",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Cumulative unrecognised share of losses of joint ventures",
        "label": "Cumulative unrecognised share of losses of joint ventures"
       }
      }
     },
     "auth_ref": [
      "r81"
     ]
    },
    "srt_CurrencyAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "CurrencyAxis",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Currency [Axis]",
        "label": "Currency [Axis]",
        "documentation": "Information by currency."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CurrencyRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrencyRiskMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsFinancialInstrumentSensitivitiesDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsForeignCurrencyExchangeRateRiskManagementNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Currency risk",
        "label": "Currency risk [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a type of market risk representing the risk that the fair value or future cash flows of a financial instrument will fluctuate because of changes in foreign exchange rates. [Refer: Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r120",
      "r121",
      "r122",
      "r123",
      "r176"
     ]
    },
    "ifrs-full_CurrentAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets",
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofAssetsLiabilitiesPartnersEquityandEquityLossIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Current assets",
        "terseLabel": "Current assets",
        "label": "Current assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of assets that the entity (a) expects to realise or intends to sell or consume in its normal operating cycle; (b) holds primarily for the purpose of trading; (c) expects to realise within twelve months after the reporting period; or (d) classifies as cash or cash equivalents (as defined in IAS 7) unless the asset is restricted from being exchanged or used to settle a liability for at least twelve months after the reporting period. [Refer: Assets]"
       }
      }
     },
     "auth_ref": [
      "r82",
      "r321",
      "r354"
     ]
    },
    "ifrs-full_CurrentAssetsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentAssetsAbstract",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Current assets",
        "label": "Current assets [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_CurrentLiabilities",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Current portion of long-term debt",
        "label": "Current borrowings and current portion of non-current borrowings"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current borrowings and current portion of non-current borrowings. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "cnq_CurrentCorporateIncomeTaxExpenseIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CurrentCorporateIncomeTaxExpenseIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails": {
       "parentTag": "ifrs-full_CurrentTaxExpenseIncome",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Current corporate income tax",
        "label": "Current Corporate Income Tax Expense (Income)",
        "documentation": "Current Corporate Income Tax Expense (Income)"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CurrentCrudeOil": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentCrudeOil",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/InventoryScheduleofInventoryDetails": {
       "parentTag": "ifrs-full_Inventories",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/InventoryScheduleofInventoryDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Product inventory",
        "label": "Current crude oil"
       }
      },
      "en": {
       "role": {
        "documentation": "A classification of current inventory representing the amount of unrefined, unprocessed oil. [Refer: Inventories]"
       }
      }
     },
     "auth_ref": [
      "r407"
     ]
    },
    "ifrs-full_CurrentDerivativeFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentDerivativeFinancialAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails_1": {
       "parentTag": "cnq_DerivativeFinancialAssetsLiabilitiesNet",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Current portion of other long-term assets",
        "label": "Current derivative financial assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current derivative financial assets. [Refer: Derivative financial assets]"
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "cnq_CurrentDerivativeFinancialAssetsLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CurrentDerivativeFinancialAssetsLiabilities",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsEstimatedFairValuesofDerivativeFinancialInstrumentsIncludedinRiskManagementAssetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "Less: current portion",
        "label": "Current Derivative Financial Assets (Liabilities)",
        "documentation": "Current Derivative Financial Assets (Liabilities)"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CurrentDerivativeFinancialLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentDerivativeFinancialLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails_1": {
       "parentTag": "cnq_DerivativeFinancialAssetsLiabilitiesNet",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Current portion of other long-term liabilities",
        "label": "Current derivative financial liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current derivative financial liabilities. [Refer: Derivative financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "dei_CurrentFiscalYearEndDate": {
     "xbrltype": "gMonthDayItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "CurrentFiscalYearEndDate",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Current Fiscal Year End Date",
        "label": "Current Fiscal Year End Date",
        "documentation": "End date of current fiscal year in the format --MM-DD."
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CurrentInvestmentsNumberOfSharesSold": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CurrentInvestmentsNumberOfSharesSold",
     "presentation": [
      "http://www.cnrl.com/role/InvestmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Number of investment shares sold (in shares)",
        "label": "Current Investments, Number Of Shares Sold",
        "documentation": "Current Investments, Number Of Shares Sold"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CurrentLeaseLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentLeaseLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/LeasesScheduleofLeasesImpactonNetEarningsandCashFlowDetails": {
       "parentTag": "ifrs-full_LeaseLiabilities",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/LeasesScheduleofLeasesImpactonNetEarningsandCashFlowDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Less: current portion",
        "label": "Current lease liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current lease liabilities. [Refer: Lease liabilities]"
       }
      }
     },
     "auth_ref": [
      "r103"
     ]
    },
    "ifrs-full_CurrentLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets",
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofAssetsLiabilitiesPartnersEquityandEquityLossIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Current liabilities",
        "terseLabel": "Current liabilities",
        "label": "Current liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities that: (a) the entity expects to settle in its normal operating cycle; (b) the entity holds primarily for the purpose of trading; (c) are due to be settled within twelve months after the reporting period; or (d) the entity does not have the right at the end of the reporting period to defer settlement for at least twelve months after the reporting period."
       }
      }
     },
     "auth_ref": [
      "r84",
      "r322",
      "r354"
     ]
    },
    "ifrs-full_CurrentLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentLiabilitiesAbstract",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Current liabilities",
        "label": "Current liabilities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CurrentLiabilitiesFromShareBasedPaymentArrangements": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CurrentLiabilitiesFromShareBasedPaymentArrangements",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesShareBasedCompensationDetails": {
       "parentTag": "ifrs-full_LiabilitiesFromSharebasedPaymentTransactions2011",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesShareBasedCompensationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Less: current portion",
        "label": "Current Liabilities From Share-Based Payment Arrangements",
        "documentation": "Current Liabilities From Share-Based Payment Arrangements"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CurrentOtherTaxExpenseIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CurrentOtherTaxExpenseIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails": {
       "parentTag": "ifrs-full_CurrentTaxExpenseIncome",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other taxes",
        "label": "Current Other Tax Expense (Income)",
        "documentation": "Current Other Tax Expense (Income)"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_CurrentPetroleumRevenueTaxExpenseIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CurrentPetroleumRevenueTaxExpenseIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails": {
       "parentTag": "ifrs-full_CurrentTaxExpenseIncome",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Current PRT - North Sea",
        "label": "Current Petroleum Revenue Tax Expense (Income)",
        "documentation": "Current Petroleum Revenue Tax Expense (Income)"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CurrentPortionOfLongtermBorrowings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentPortionOfLongtermBorrowings",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails": {
       "parentTag": "ifrs-full_Borrowings",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "current portion of long-term debt",
        "label": "Current portion of non-current borrowings"
       }
      },
      "en": {
       "role": {
        "documentation": "The current portion of non-current borrowings. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "ifrs-full_CurrentPrepaymentsAndOtherCurrentAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentPrepaymentsAndOtherCurrentAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_CurrentAssets",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Prepaids and other",
        "label": "Current prepayments and other current assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current prepayments and other current assets. [Refer: Other current assets; Current prepayments]"
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "cnq_CurrentRawMaterialsCurrentProductionSuppliesAndOther": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "CurrentRawMaterialsCurrentProductionSuppliesAndOther",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/InventoryScheduleofInventoryDetails": {
       "parentTag": "ifrs-full_Inventories",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/InventoryScheduleofInventoryDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Materials, supplies and other",
        "label": "Current Raw Materials, Current Production Supplies And Other",
        "documentation": "Current Raw Materials, Current Production Supplies And Other"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CurrentTaxExpenseIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentTaxExpenseIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": "ifrs-full_ProfitLoss",
       "weight": -1.0,
       "order": 2.0
      },
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails": {
       "parentTag": "ifrs-full_GrossProfit",
       "weight": -1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Current income tax expense",
        "totalLabel": "Current income tax",
        "negatedTerseLabel": "Income tax",
        "label": "Current tax expense (income)"
       }
      }
     },
     "auth_ref": [
      "r338",
      "r380"
     ]
    },
    "ifrs-full_CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriodsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriodsAbstract",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Current",
        "label": "Current tax expense (income) and adjustments for current tax of prior periods [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CurrentTaxLiabilitiesCurrent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentTaxLiabilitiesCurrent",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_CurrentLiabilities",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Current income taxes payable",
        "label": "Current tax liabilities, current"
       }
      },
      "en": {
       "role": {
        "documentation": "The current amount of current tax liabilities. [Refer: Current tax liabilities]"
       }
      }
     },
     "auth_ref": [
      "r315"
     ]
    },
    "ifrs-full_CurrentTradeReceivables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentTradeReceivables",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_CurrentAssets",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Accounts receivable",
        "label": "Current trade receivables"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current trade receivables. [Refer: Trade receivables]"
       }
      }
     },
     "auth_ref": [
      "r382",
      "r387",
      "r389"
     ]
    },
    "cnq_DebtInstrumentDebtToBookCapitalizationRatio": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DebtInstrumentDebtToBookCapitalizationRatio",
     "presentation": [
      "http://www.cnrl.com/role/CapitalDisclosuresNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Debt to book capitalization ratio",
        "label": "Debt Instrument, Debt To Book Capitalization Ratio",
        "documentation": "Debt Instrument, Debt To Book Capitalization Ratio"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DebtToBookCapitalizationRatio": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DebtToBookCapitalizationRatio",
     "presentation": [
      "http://www.cnrl.com/role/CapitalDisclosuresNarrativeDetails",
      "http://www.cnrl.com/role/CapitalDisclosuresScheduleofDebttoBookCapitalizationRatioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Debt to book capitalization",
        "label": "Debt To Book Capitalization Ratio",
        "documentation": "Debt To Book Capitalization Ratio"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DebtToBookCapitalizationRatioTarget": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DebtToBookCapitalizationRatioTarget",
     "presentation": [
      "http://www.cnrl.com/role/CapitalDisclosuresNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Debt to book capitalization, target",
        "label": "Debt To Book Capitalization Ratio, Target",
        "documentation": "Debt To Book Capitalization Ratio, Target"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DecommissioningRestorationAndRehabilitationAssetsRecognizedAsOfAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DecommissioningRestorationAndRehabilitationAssetsRecognizedAsOfAcquisitionDate",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/PropertyPlantandEquipmentSummaryofNetAssetsAcquiredDetails": {
       "parentTag": "ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentSummaryofNetAssetsAcquiredDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Company recognized a non-cash charge",
        "negatedTerseLabel": "Asset retirement obligations",
        "label": "Decommissioning, Restoration, And Rehabilitation Assets Recognized As of Acquisition Date",
        "documentation": "Decommissioning, Restoration, And Rehabilitation Assets Recognized As of Acquisition Date"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DecommissioningRestorationAndRehabilitationCostsArisingFromPassageOfTIme": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DecommissioningRestorationAndRehabilitationCostsArisingFromPassageOfTIme",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": 1.0,
       "order": 3.0
      },
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails": {
       "parentTag": "ifrs-full_GrossProfit",
       "weight": -1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Asset retirement obligation accretion",
        "negatedTerseLabel": "Asset retirement obligation accretion",
        "label": "Decommissioning, Restoration, And Rehabilitation Costs Arising From Passage Of TIme",
        "documentation": "Decommissioning, Restoration, And Rehabilitation Costs Arising From Passage Of TIme"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DecommissioningRestorationAndRehabilitationCostsProvisionUsed": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DecommissioningRestorationAndRehabilitationCostsProvisionUsed",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 11.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Abandonment expenditures",
        "label": "Decommissioning, Restoration And Rehabilitation Costs, Provision Used",
        "documentation": "Decommissioning, Restoration And Rehabilitation Costs, Provision Used"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DecommissioningRestorationAndRehabilitationCostsRelatedTemporaryDifferencesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DecommissioningRestorationAndRehabilitationCostsRelatedTemporaryDifferencesMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMovementsinDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Asset retirement obligations",
        "label": "Decommissioning, Restoration And Rehabilitation Costs Related Temporary Differences [Member]",
        "documentation": "Decommissioning, Restoration And Rehabilitation Costs Related Temporary Differences [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DecommissioningRestorationAndRehabilitationLiabilitiesPeriodOfAccretion": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DecommissioningRestorationAndRehabilitationLiabilitiesPeriodOfAccretion",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Asset retirement obligations settlement period",
        "label": "Decommissioning, Restoration, And Rehabilitation Liabilities, Period Of Accretion",
        "documentation": "Decommissioning, Restoration, And Rehabilitation Liabilities, Period Of Accretion"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DecommissioningRestorationAndUninflatedGrossAssetRetirementObligations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DecommissioningRestorationAndUninflatedGrossAssetRetirementObligations",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Udniscounted and uninflated asset retirement obligations",
        "label": "Decommissioning Restoration And Uninflated, Gross Asset Retirement Obligations",
        "documentation": "Decommissioning Restoration And Uninflated, Gross Asset Retirement Obligations"
       }
      }
     },
     "auth_ref": []
    },
    "srt_DecreaseDueToSalesOfMineralsInPlace": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "DecreaseDueToSalesOfMineralsInPlace",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails": {
       "parentTag": "srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease",
       "weight": -1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Sales of proved reserves in place",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Sale of Mineral in Place",
        "documentation": "Amount of decrease in standardized measure of discounted future net cash flow as a result of sales of minerals in place."
       }
      }
     },
     "auth_ref": [
      "r401"
     ]
    },
    "ifrs-full_DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Deductible temporary differences for which no deferred tax asset is recognised",
        "label": "Deductible temporary differences for which no deferred tax asset is recognised"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of deductible temporary differences for which no deferred tax asset is recognised in the statement of financial position. [Refer: Temporary differences [member]]"
       }
      }
     },
     "auth_ref": [
      "r5",
      "r231"
     ]
    },
    "cnq_DeferredCorporateIncomeTaxRecovery": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DeferredCorporateIncomeTaxRecovery",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Deferred corporate income tax recovery",
        "label": "Deferred Corporate Income Tax Recovery",
        "documentation": "Deferred Corporate Income Tax Recovery"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DeferredFinancingCostsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DeferredFinancingCostsMember",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Transaction costs",
        "label": "Deferred Financing Costs [Member]",
        "documentation": "Deferred Financing Costs [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DeferredIncomeTaxAndPetroleumReserveExpenseIncomeExcludingNorthSeaLocation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DeferredIncomeTaxAndPetroleumReserveExpenseIncomeExcludingNorthSeaLocation",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails": {
       "parentTag": "ifrs-full_DeferredTaxExpenseIncome",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Deferred corporate income tax",
        "label": "Deferred Income Tax and Petroleum Reserve Expense (Income) Excluding North Sea Location",
        "documentation": "Deferred Income Tax and Petroleum Reserve Expense (Income) Excluding North Sea Location"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DeferredPetroleumRevenueTaxExpenseIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DeferredPetroleumRevenueTaxExpenseIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails": {
       "parentTag": "ifrs-full_DeferredTaxExpenseIncome",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails",
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Deferred PRT \u2013 North Sea",
        "label": "Deferred Petroleum Revenue Tax Expense (Income)",
        "documentation": "Deferred Petroleum Revenue Tax Expense (Income)"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DeferredPetroleumRevenueTaxRelatedTemporaryDifferencesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DeferredPetroleumRevenueTaxRelatedTemporaryDifferencesMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMovementsinDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Deferred PRT",
        "label": "Deferred Petroleum Revenue Tax Related Temporary Differences [Member]",
        "documentation": "Deferred Petroleum Revenue Tax Related Temporary Differences [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DeferredTaxAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DeferredTaxAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails": {
       "parentTag": "ifrs-full_DeferredTaxLiabilityAsset",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedLabel": "Deferred income tax assets",
        "label": "Deferred tax assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amounts of income taxes recoverable in future periods in respect of: (a) deductible temporary differences; (b) the carryforward of unused tax losses; and (c) the carryforward of unused tax credits. [Refer: Temporary differences [member]; Unused tax credits [member]; Unused tax losses [member]]"
       }
      }
     },
     "auth_ref": [
      "r6",
      "r232",
      "r316",
      "r318"
     ]
    },
    "ifrs-full_DeferredTaxAssetsRecognisedAsOfAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DeferredTaxAssetsRecognisedAsOfAcquisitionDate",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Deferred tax assets recognised as of acquisition date",
        "label": "Deferred tax assets recognised as of acquisition date"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount recognised as of the acquisition date for deferred tax assets acquired in a business combination. [Refer: Deferred tax assets; Total for all business combinations [member]]"
       }
      }
     },
     "auth_ref": [
      "r422"
     ]
    },
    "ifrs-full_DeferredTaxExpenseIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DeferredTaxExpenseIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": "ifrs-full_ProfitLoss",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Deferred income tax expense",
        "totalLabel": "Deferred income tax",
        "verboseLabel": "Deferred corporate income tax",
        "label": "Deferred tax expense (income)"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of tax expense (income) relating to changes in deferred tax liabilities and deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities]"
       }
      }
     },
     "auth_ref": [
      "r7",
      "r233"
     ]
    },
    "ifrs-full_DeferredTaxExpenseIncomeAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DeferredTaxExpenseIncomeAbstract",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Deferred",
        "label": "Deferred tax expense (income) [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DeferredTaxExpenseIncomeRecognisedInProfitOrLoss",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMovementsinDeferredTaxAssetsandLiabilitiesDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofNetDeferredIncomeTaxLiabilityDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Deferred income tax recovery",
        "terseLabel": "Deferred income tax expense",
        "label": "Deferred tax expense (income) recognised in profit or loss"
       }
      }
     },
     "auth_ref": [
      "r7",
      "r233"
     ]
    },
    "cnq_DeferredTaxExpenseIncomeRelatingToGainLossOnDisposition": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DeferredTaxExpenseIncomeRelatingToGainLossOnDisposition",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Deferred tax expense relating to gain (loss) on disposition",
        "label": "Deferred Tax Expense (Income) Relating To Gain (Loss) On Disposition",
        "documentation": "Deferred Tax Expense (Income) Relating To Gain (Loss) On Disposition"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DeferredTaxExpenseIncomeRelatingToGainLossOnRemeasurementOfInterest": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DeferredTaxExpenseIncomeRelatingToGainLossOnRemeasurementOfInterest",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Deferred tax expense relating to gain (loss) on remeasurement of interest",
        "label": "Deferred Tax Expense (Income) Relating To Gain (Loss) On Remeasurement Of Interest",
        "documentation": "Deferred Tax Expense (Income) Relating To Gain (Loss) On Remeasurement Of Interest"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DeferredTaxLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DeferredTaxLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails": {
       "parentTag": "ifrs-full_DeferredTaxLiabilityAsset",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Deferred income tax liabilities",
        "label": "Deferred tax liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amounts of income taxes payable in future periods in respect of taxable temporary differences. [Refer: Temporary differences [member]]"
       }
      }
     },
     "auth_ref": [
      "r6",
      "r232",
      "r316",
      "r318"
     ]
    },
    "ifrs-full_DeferredTaxLiabilitiesRecognisedAsOfAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DeferredTaxLiabilitiesRecognisedAsOfAcquisitionDate",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Deferred income tax liabilities, purchase consideration and previously held interests",
        "label": "Deferred tax liabilities recognised as of acquisition date"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount recognised as of the acquisition date for deferred tax liabilities assumed in a business combination. [Refer: Deferred tax liabilities; Total for all business combinations [member]]"
       }
      }
     },
     "auth_ref": [
      "r422"
     ]
    },
    "ifrs-full_DeferredTaxLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DeferredTaxLiabilityAsset",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 4.0
      },
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofNetDeferredIncomeTaxLiabilityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Deferred income taxes",
        "totalLabel": "Net deferred income tax liability",
        "periodStartLabel": "Balance \u2013 beginning of year",
        "periodEndLabel": "Balance \u2013 end of year",
        "label": "Deferred tax liability (asset)"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets]"
       }
      }
     },
     "auth_ref": [
      "r6",
      "r232"
     ]
    },
    "cnq_DemandCreditFacilityMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DemandCreditFacilityMember",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Demand credit facility",
        "label": "Demand Credit Facility [Member]",
        "documentation": "Demand Credit Facility [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DepletionDepreciationAndAmortizationOfAcquireeSinceAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DepletionDepreciationAndAmortizationOfAcquireeSinceAcquisitionDate",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Depletion, depreciation and amortization since acquisition date",
        "label": "Depletion, Depreciation, and Amortization Of Acquiree Since Acquisition Date",
        "documentation": "Depletion, Depreciation, and Amortization Of Acquiree Since Acquisition Date"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DepletionDepreciationAndAmortizationOfCombinedEntityAsIfCombinationOccurredAtBeginningOfPeriod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DepletionDepreciationAndAmortizationOfCombinedEntityAsIfCombinationOccurredAtBeginningOfPeriod",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Depletion, depreciation and amortization",
        "label": "Depletion, Depreciation And Amortization Of Combined Entity As If Combination Occurred At Beginning Of Period",
        "documentation": "Depletion, Depreciation And Amortization Of Combined Entity As If Combination Occurred At Beginning Of Period"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarningsParenthetical",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Recoverability charge",
        "label": "Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss"
       }
      }
     },
     "auth_ref": [
      "r433"
     ]
    },
    "ifrs-full_DepreciationAndAmortisationExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DepreciationAndAmortisationExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails": {
       "parentTag": "ifrs-full_GrossProfit",
       "weight": -1.0,
       "order": 4.0
      },
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": 1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofAssetsLiabilitiesPartnersEquityandEquityLossIncomeDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Depletion, depreciation and amortization",
        "negatedTerseLabel": "Depletion, depreciation and amortization",
        "label": "Depreciation and amortisation expense"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of depreciation and amortisation expense. Depreciation and amortisation are the systematic allocations of depreciable amounts of assets over their useful lives."
       }
      }
     },
     "auth_ref": [
      "r90",
      "r179",
      "r186",
      "r300",
      "r337",
      "r384"
     ]
    },
    "ifrs-full_DepreciationPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DepreciationPropertyPlantAndEquipment",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Expense",
        "label": "Depreciation, property, plant and equipment"
       }
      }
     },
     "auth_ref": [
      "r14",
      "r18",
      "r239"
     ]
    },
    "ifrs-full_DepreciationRightofuseAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DepreciationRightofuseAssets",
     "presentation": [
      "http://www.cnrl.com/role/LeasesLeaseAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Depreciation",
        "label": "Depreciation, right-of-use assets"
       }
      }
     },
     "auth_ref": [
      "r104",
      "r200"
     ]
    },
    "cnq_DerivativeAECOFixedPrice": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DerivativeAECOFixedPrice",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Derivative, AECO fixed price",
        "label": "Derivative, AECO Fixed Price",
        "documentation": "Derivative, AECO Fixed Price"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DerivativeContractAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DerivativeContractAxis",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Derivative Contract [Axis]",
        "label": "Derivative Contract [Axis]",
        "documentation": "Derivative Contract"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DerivativeContractDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DerivativeContractDomain",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Derivative Contract [Domain]",
        "label": "Derivative Contract [Domain]",
        "documentation": "Derivative Contract [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DerivativeContractOneMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DerivativeContractOneMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Derivative Contract One",
        "label": "Derivative Contract One [Member]",
        "documentation": "Derivative Contract One"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DerivativeContractTwoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DerivativeContractTwoMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Derivative Contract Two",
        "label": "Derivative Contract Two [Member]",
        "documentation": "Derivative Contract Two"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DerivativeFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DerivativeFinancialAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofOtherLongTermAssetsDetails_1": {
       "parentTag": "ifrs-full_OtherAssets",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofOtherLongTermAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Risk management",
        "label": "Derivative financial assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial assets classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]"
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "ifrs-full_DerivativeFinancialAssetsHeldForHedging": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DerivativeFinancialAssetsHeldForHedging",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsForeignCurrencyExchangeRateRiskManagementNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Derivative financial assets held for hedging",
        "label": "Derivative financial assets held for hedging"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of derivative financial assets held for hedging. [Refer: Derivative financial assets]"
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "ifrs-full_DerivativeFinancialAssetsHeldForTrading": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DerivativeFinancialAssetsHeldForTrading",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsForeignCurrencyExchangeRateRiskManagementNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Derivative financial assets held for trading",
        "label": "Derivative financial assets held for trading"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of derivative financial assets held for trading. [Refer: Derivative financial assets; Financial assets at fair value through profit or loss, classified as held for trading]"
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "cnq_DerivativeFinancialAssetsLiabilitiesHeldForTrading": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DerivativeFinancialAssetsLiabilitiesHeldForTrading",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails": {
       "parentTag": "cnq_DerivativeFinancialAssetsLiabilitiesNet",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Derivatives held for trading",
        "label": "Derivative Financial Assets (Liabilities) Held For Trading",
        "documentation": "Derivative Financial Assets (Liabilities) Held For Trading"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DerivativeFinancialAssetsLiabilitiesNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DerivativeFinancialAssetsLiabilitiesNet",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      },
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails_1": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsCounterpartyCreditRiskManagementNarrativeDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsEstimatedFairValuesofDerivativeFinancialInstrumentsIncludedinRiskManagementAssetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "periodStartLabel": "Derivative financial asset (liability), net, beginning balance",
        "periodEndLabel": "Derivative financial asset (liability), net, ending balance",
        "totalLabel": "Derivative financial asset (liability), net",
        "terseLabel": "Derivative financial asset (liability), net",
        "label": "Derivative Financial Assets (Liabilities), Net",
        "documentation": "Derivative Financial Assets (Liabilities), Net"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DerivativeFinancialLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DerivativeFinancialLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Risk management",
        "label": "Derivative financial liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]"
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "cnq_DerivativeNaturalGasSupplyTerm": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DerivativeNaturalGasSupplyTerm",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Derivative, natural gas supply term",
        "label": "Derivative, Natural Gas Supply Term",
        "documentation": "Derivative, Natural Gas Supply Term"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DerivativeTermOfContract1": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DerivativeTermOfContract1",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsForeignCurrencyExchangeRateRiskManagementNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Derivative, term of contract",
        "label": "Derivative, Term Of Contract1",
        "documentation": "Derivative, Term Of Contract1"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DerivativeVolumePerDay": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DerivativeVolumePerDay",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Derivative, volume per day",
        "label": "Derivative, Volume Per Day",
        "documentation": "Derivative, Volume Per Day"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsAndGoodwillExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForBusinessCombinationsAndGoodwillExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "BUSINESS COMBINATIONS",
        "label": "Description of accounting policy for business combinations and goodwill [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for business combinations and goodwill. [Refer: Total for all business combinations [member]; Goodwill]"
       }
      }
     },
     "auth_ref": [
      "r434"
     ]
    },
    "cnq_DescriptionOfAccountingPolicyForCostOfSalesPolicyTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DescriptionOfAccountingPolicyForCostOfSalesPolicyTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "COSTS OF GOODS SOLD",
        "label": "Description Of Accounting Policy For Cost Of Sales [Policy Text Block]",
        "documentation": "Description Of Accounting Policy For Cost Of Sales [Policy Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DescriptionOfAccountingPolicyForDecommissioningRestorationAndRehabilitationProvisionsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForDecommissioningRestorationAndRehabilitationProvisionsExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "ASSET RETIREMENT OBLIGATIONS",
        "label": "Description of accounting policy for decommissioning, restoration and rehabilitation provisions [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for decommissioning, restoration and rehabilitation provisions. [Refer: Provision for decommissioning, restoration and rehabilitation costs]"
       }
      }
     },
     "auth_ref": [
      "r434"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForEarningsPerShareExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForEarningsPerShareExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "PER COMMON SHARE AMOUNTS",
        "label": "Description of accounting policy for earnings per share [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for earnings per share."
       }
      }
     },
     "auth_ref": [
      "r434"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForExplorationAndEvaluationExpenditures": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForExplorationAndEvaluationExpenditures",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "EXPLORATION AND EVALUATION ASSETS",
        "label": "Description of accounting policy for exploration and evaluation expenditures [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's accounting policy for exploration and evaluation assets. [Refer: Exploration and evaluation assets [member]]"
       }
      }
     },
     "auth_ref": [
      "r149"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "FINANCIAL INSTRUMENTS",
        "label": "Description of accounting policy for financial instruments [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for financial instruments. [Refer: Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r434"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "FOREIGN CURRENCY TRANSLATION",
        "label": "Description of accounting policy for foreign currency translation [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for foreign currency translation."
       }
      }
     },
     "auth_ref": [
      "r434"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForGovernmentGrants": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForGovernmentGrants",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "GOVERNMENT GRANTS",
        "label": "Description of accounting policy for government grants [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's accounting policy for government grants, including the methods of presentation adopted in the financial statements. [Refer: Government [member]; Government grants]"
       }
      }
     },
     "auth_ref": [
      "r26",
      "r242"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForIncomeTaxExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "INCOME TAX",
        "label": "Description of accounting policy for income tax [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for income tax."
       }
      }
     },
     "auth_ref": [
      "r434"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "PRODUCTION SHARING CONTRACTS",
        "label": "Description of accounting policy for investment in associates and joint ventures [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for investment in associates and joint ventures. [Refer: Total for all associates [member]; Total for all joint ventures [member]]"
       }
      }
     },
     "auth_ref": [
      "r434"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForIssuedCapitalExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForIssuedCapitalExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "SHARE CAPITAL",
        "label": "Description of accounting policy for issued capital [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for issued capital. [Refer: Issued capital]"
       }
      }
     },
     "auth_ref": [
      "r434"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForLeasesExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "LEASES",
        "label": "Description of accounting policy for leases [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for leases. A lease is an agreement whereby the lessor conveys to the lessee in return for a payment or series of payments the right to use an asset for an agreed period of time."
       }
      }
     },
     "auth_ref": [
      "r434"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForMeasuringInventories": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForMeasuringInventories",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "INVENTORY",
        "label": "Description of accounting policy for measuring inventories [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's accounting policy for measuring inventories. [Refer: Inventories]"
       }
      }
     },
     "auth_ref": [
      "r22",
      "r219"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "PROPERTY, PLANT AND EQUIPMENT",
        "label": "Description of accounting policy for property, plant and equipment [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for property, plant and equipment. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r434"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForRecognitionOfRevenue": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForRecognitionOfRevenue",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "REVENUE RECOGNITION",
        "label": "Description of accounting policy for recognition of revenue [text block]"
       }
      }
     },
     "auth_ref": [
      "r434"
     ]
    },
    "cnq_DescriptionOfAccountingPolicyForRiskManagementActivitiesExplanatoryPolicyTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DescriptionOfAccountingPolicyForRiskManagementActivitiesExplanatoryPolicyTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "RISK MANAGEMENT ACTIVITIES",
        "label": "Description Of Accounting Policy For Risk Management Activities Explanatory [Policy Text Block]",
        "documentation": "Description Of Accounting Policy For Risk Management Activities Explanatory [Policy Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "SHARE-BASED COMPENSATION",
        "label": "Description of accounting policy for share-based payment transactions [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for transactions in which the entity: (a) receives goods or services from the supplier of those goods or services (including an employee) in a share-based payment arrangement; or (b) incurs an obligation to settle the transaction with the supplier in a share-based payment arrangement when another group entity receives those goods or services. [Refer: Types of share-based payment arrangements [domain]]"
       }
      }
     },
     "auth_ref": [
      "r434"
     ]
    },
    "ifrs-full_DescriptionOfDiscountRatesAppliedToCashFlowProjections": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfDiscountRatesAppliedToCashFlowProjections",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Discount rate applied to cash flow projections",
        "label": "Discount rate applied to cash flow projections"
       }
      },
      "en": {
       "role": {
        "documentation": "The discount rate applied to cash flow projections for a cash-generating unit (group of units). [Refer: Total for all cash-generating units [member]]"
       }
      }
     },
     "auth_ref": [
      "r48",
      "r50",
      "r250",
      "r252"
     ]
    },
    "ifrs-full_DescriptionOfDiscountRatesUsedInCurrentEstimateOfValueInUse": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfDiscountRatesUsedInCurrentEstimateOfValueInUse",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Discount Rate",
        "label": "Discount rate used in current estimate of value in use"
       }
      },
      "en": {
       "role": {
        "documentation": "The discount rate used in the current estimate of the present value of the future cash flows expected to be derived from an asset or cash-generating unit."
       }
      }
     },
     "auth_ref": [
      "r47"
     ]
    },
    "ifrs-full_DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations",
     "presentation": [
      "http://www.cnrl.com/role/AccountingStandardsIssuedButNotYetApplied"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Accounting Standards Issued But Not Yet Applied",
        "label": "Disclosure of expected impact of initial application of new standards or interpretations [text block]"
       }
      }
     },
     "auth_ref": [
      "r73",
      "r227"
     ]
    },
    "ifrs-full_DescriptionOfExpectedVolatilityShareOptionsGranted": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfExpectedVolatilityShareOptionsGranted",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesWeightedAverageAssumptionsusedtoCalculateShareBasedCompensationLiabilityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Expected volatility",
        "label": "Expected volatility, share options granted"
       }
      },
      "en": {
       "role": {
        "documentation": "The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time."
       }
      }
     },
     "auth_ref": [
      "r135"
     ]
    },
    "cnq_DescriptionOfManagementJudgementsInApplyingEntitysAccountingPoliciesWithSignificantEffectOnRecognisedAmountPolicyTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DescriptionOfManagementJudgementsInApplyingEntitysAccountingPoliciesWithSignificantEffectOnRecognisedAmountPolicyTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "CRITICAL ACCOUNTING ESTIMATES and JUDGEMENTS",
        "label": "Description Of Management Judgements In Applying Entity's Accounting Policies With Significant Effect On Recognised Amount [Policy Text Block]",
        "documentation": "Description Of Management Judgements In Applying Entity's Accounting Policies With Significant Effect On Recognised Amount [Policy Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DescriptionOfOptionLifeShareOptionsGranted": {
     "xbrltype": "decimalItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfOptionLifeShareOptionsGranted",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesWeightedAverageAssumptionsusedtoCalculateShareBasedCompensationLiabilityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Expected stock option life",
        "label": "Option life, share options granted"
       }
      },
      "en": {
       "role": {
        "documentation": "The option life of share options granted."
       }
      }
     },
     "auth_ref": [
      "r135"
     ]
    },
    "ifrs-full_DescriptionOfRiskFreeInterestRateShareOptionsGranted": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfRiskFreeInterestRateShareOptionsGranted",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesWeightedAverageAssumptionsusedtoCalculateShareBasedCompensationLiabilityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Risk free interest rate",
        "label": "Risk free interest rate, share options granted"
       }
      },
      "en": {
       "role": {
        "documentation": "The implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price for share options granted is expressed, with a remaining term equal to the expected term of the option being valued (based on the option's remaining contractual life and taking into account the effects of expected early exercise). [Refer: Government [member]]"
       }
      }
     },
     "auth_ref": [
      "r135"
     ]
    },
    "ifrs-full_DilutedEarningsLossPerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DilutedEarningsLossPerShare",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/NetEarningsPerCommonShareScheduleofBasicandDilutedNetEarningsperCommonShareDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Diluted (in CAD per share)",
        "verboseLabel": "Net earnings per common share - diluted (in CAD per share)",
        "label": "Diluted earnings (loss) per share"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator), divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]"
       }
      }
     },
     "auth_ref": [
      "r40",
      "r41"
     ]
    },
    "ifrs-full_DilutiveEffectOfShareOptionsOnNumberOfOrdinaryShares": {
     "xbrltype": "sharesItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DilutiveEffectOfShareOptionsOnNumberOfOrdinaryShares",
     "calculation": {
      "http://www.cnrl.com/role/NetEarningsPerCommonShareScheduleofBasicandDilutedNetEarningsperCommonShareDetails": {
       "parentTag": "ifrs-full_AdjustedWeightedAverageShares",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/NetEarningsPerCommonShareScheduleofBasicandDilutedNetEarningsperCommonShareDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Effect of dilutive stock options (thousands of shares) (in shares)",
        "label": "Dilutive effect of share options on weighted average number of ordinary shares"
       }
      },
      "en": {
       "role": {
        "documentation": "The potential dilutive effect on the weighted average number of ordinary shares that relate to the assumed exercise of the entity's share options."
       }
      }
     },
     "auth_ref": [
      "r408"
     ]
    },
    "ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfAccountingJudgementsAndEstimatesExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/CriticalAccountingEstimatesandJudgements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Critical Accounting Estimates and Judgements",
        "label": "Disclosure of accounting judgements and estimates [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of judgements that management has made in the process of applying the entity's accounting policies that have the most significant effect on amounts recognised in the financial statements along with information about the assumptions that the entity makes about the future, and other major sources of estimation uncertainty at the end of the reporting period, that have a significant risk of resulting in a material adjustment to the carrying amounts of assets and liabilities within the next year. [Refer: Carrying amount [member]]"
       }
      }
     },
     "auth_ref": [
      "r431"
     ]
    },
    "ifrs-full_DisclosureOfAdditionalInformationAboutLeasingActivitiesForLesseeExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfAdditionalInformationAboutLeasingActivitiesForLesseeExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/LeasesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Schedule of Leases Impact on Net Earnings and Cash Flow",
        "label": "Disclosure of additional information about leasing activities for lessee [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of additional information about leasing activities of a lessee."
       }
      }
     },
     "auth_ref": [
      "r112",
      "r208"
     ]
    },
    "ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/AccumulatedOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Accumulated Other Comprehensive Income",
        "label": "Disclosure of analysis of other comprehensive income by item [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure of the analysis of other comprehensive income by item."
       }
      }
     },
     "auth_ref": [
      "r305"
     ]
    },
    "ifrs-full_DisclosureOfBasisOfConsolidationExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfBasisOfConsolidationExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "PRINCIPLES OF CONSOLIDATION",
        "label": "Disclosure of basis of consolidation [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the basis used for consolidation."
       }
      }
     },
     "auth_ref": [
      "r431"
     ]
    },
    "ifrs-full_DisclosureOfBorrowingsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfBorrowingsExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebt"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Long-Term Debt",
        "label": "Disclosure of borrowings [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of borrowings. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r431"
     ]
    },
    "ifrs-full_DisclosureOfCashFlowStatementExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfCashFlowStatementExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Supplemental Disclosure of Cash Flow Information",
        "label": "Disclosure of cash flow statement [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for a statement of cash flows."
       }
      }
     },
     "auth_ref": [
      "r72"
     ]
    },
    "ifrs-full_DisclosureOfClassesOfShareCapitalExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfClassesOfShareCapitalExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Summary of Outstanding Common Stock",
        "label": "Disclosure of classes of share capital [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of classes of share capital. [Refer: Classes of share capital [domain]]"
       }
      }
     },
     "auth_ref": [
      "r218",
      "r296",
      "r326"
     ]
    },
    "ifrs-full_DisclosureOfClassesOfShareCapitalLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfClassesOfShareCapitalLineItems",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalOutstandingCommonSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of classes of share capital [line items]",
        "label": "Disclosure of classes of share capital [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfClassesOfShareCapitalTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfClassesOfShareCapitalTable",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalOutstandingCommonSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of classes of share capital [table]",
        "label": "Disclosure of classes of share capital [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to classes of share capital."
       }
      }
     },
     "auth_ref": [
      "r218",
      "r296",
      "r326"
     ]
    },
    "ifrs-full_DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingencies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Commitments and Contingencies",
        "label": "Disclosure of commitments and contingent liabilities [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of commitments and contingent liabilities. [Refer: Classes of contingent liabilities [domain]]"
       }
      }
     },
     "auth_ref": [
      "r431"
     ]
    },
    "cnq_DisclosureOfCommitmentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfCommitmentsLineItems",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure Of Commitments [Line Items]",
        "label": "Disclosure Of Commitments [Line Items]",
        "documentation": "[Line Items] for Disclosure Of Commitments [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisclosureOfCommitmentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfCommitmentsTable",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure Of Commitments [Table]",
        "label": "Disclosure Of Commitments [Table]",
        "documentation": "Disclosure Of Commitments [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDerivativeFinancialInstrumentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDerivativeFinancialInstrumentsExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Schedule of Embedded Derivative Contract",
        "label": "Disclosure of derivative financial instruments [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of derivative financial instruments. [Refer: Derivatives [member]]"
       }
      }
     },
     "auth_ref": [
      "r431"
     ]
    },
    "cnq_DisclosureOfDetailedInformationAboutAccumulatedOtherComprehensiveIncomeExplanatoryTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutAccumulatedOtherComprehensiveIncomeExplanatoryTableTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/AccumulatedOtherComprehensiveIncomeTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Components of Accumulated Other Comprehensive Income, Net of Taxes",
        "label": "Disclosure Of Detailed Information About Accumulated Other Comprehensive Income Explanatory [Table Text Block]",
        "documentation": "Disclosure Of Detailed Information About Accumulated Other Comprehensive Income Explanatory [Table Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisclosureOfDetailedInformationAboutAssetAcquisitionTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutAssetAcquisitionTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of Detailed Information about Asset Acquisition",
        "label": "Disclosure Of Detailed Information About Asset Acquisition [Text Block]",
        "documentation": "Disclosure Of Detailed Information About Asset Acquisition"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutBorrowingsExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Schedule of Long-term Debt",
        "label": "Disclosure of detailed information about borrowings [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of detailed information about borrowings. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r424"
     ]
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutBorrowingsLineItems",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of detailed information about borrowings [line items]",
        "label": "Disclosure of detailed information about borrowings [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutBorrowingsTable",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of detailed information about borrowings [table]",
        "label": "Disclosure of detailed information about borrowings [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to details of borrowings."
       }
      }
     },
     "auth_ref": [
      "r424"
     ]
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutBusinessCombinationsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutBusinessCombinationsExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Detailed Information about Identifiable Net Assets Acquired, and Fair Value of Consideration Exchanged",
        "label": "Disclosure of detailed information about business combination [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of detailed information about business combinations. [Refer: Total for all business combinations [member]]"
       }
      }
     },
     "auth_ref": [
      "r147"
     ]
    },
    "cnq_DisclosureOfDetailedInformationAboutCapitalExplanatoryTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutCapitalExplanatoryTableTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/CapitalDisclosuresTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of Detailed Information About Capital",
        "label": "Disclosure Of Detailed Information About Capital Explanatory [Table Text Block]",
        "documentation": "Disclosure Of Detailed Information About Capital Explanatory [Table Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisclosureOfDetailedInformationAboutCashFlowSupplementalDisclosuresTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutCashFlowSupplementalDisclosuresTableTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Schedule of Cash Flow Supplemental Disclosures",
        "label": "Disclosure Of Detailed Information About Cash Flow Supplemental Disclosures [Table Text Block]",
        "documentation": "Disclosure Of Detailed Information About Cash Flow Supplemental Disclosures [Table Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisclosureOfDetailedInformationAboutCommitmentsAndContingenciesExplanatoryTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutCommitmentsAndContingenciesExplanatoryTableTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of Future Payments",
        "label": "Disclosure Of Detailed Information About Commitments And Contingencies Explanatory [Table Text Block]",
        "documentation": "Disclosure Of Detailed Information About Commitments And Contingencies Explanatory [Table Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisclosureOfDetailedInformationAboutCostsIncurredInCrudeOilAndNaturalGasActivitiesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutCostsIncurredInCrudeOilAndNaturalGasActivitiesTableTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of Detailed Information About Costs Incurred In Crude Oil And Natural Gas Activities",
        "label": "Disclosure Of Detailed Information About Costs Incurred In Crude Oil And Natural Gas Activities [Table Text Block]",
        "documentation": "Disclosure Of Detailed Information About Costs Incurred In Crude Oil And Natural Gas Activities [Table Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisclosureOfDetailedInformationAboutDecommissioningRestorationAndRehabilitationCostsExplanatoryTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutDecommissioningRestorationAndRehabilitationCostsExplanatoryTableTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Summary of Asset Retirement Obligations",
        "label": "Disclosure Of Detailed Information About Decommissioning, Restoration And Rehabilitation Costs Explanatory [Table Text Block]",
        "documentation": "Disclosure Of Detailed Information About Decommissioning, Restoration And Rehabilitation Costs Explanatory [Table Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisclosureOfDetailedInformationAboutExplorationAndEvaluationAssetsExplanatoryTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutExplorationAndEvaluationAssetsExplanatoryTableTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/ExplorationandEvaluationAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Detailed Information about Exploration and Evaluation Assets",
        "label": "Disclosure Of Detailed Information About Exploration And Evaluation Assets Explanatory [Table Text Block]",
        "documentation": "Disclosure Of Detailed Information About Exploration And Evaluation Assets Explanatory [Table Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisclosureOfDetailedInformationAboutExplorationForAndEvaluationOfMineralResourcesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutExplorationForAndEvaluationOfMineralResourcesLineItems",
     "presentation": [
      "http://www.cnrl.com/role/ExplorationandEvaluationAssetsDetailedInformationaboutExplorationandEvaluationAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure Of Detailed Information About Exploration For And Evaluation Of Mineral Resources [Line Items]",
        "label": "Disclosure Of Detailed Information About Exploration For And Evaluation Of Mineral Resources [Line Items]",
        "documentation": "[Line Items] for Disclosure Of Detailed Information About Exploration For And Evaluation Of Mineral Resources [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisclosureOfDetailedInformationAboutExplorationForAndEvaluationOfMineralResourcesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutExplorationForAndEvaluationOfMineralResourcesTable",
     "presentation": [
      "http://www.cnrl.com/role/ExplorationandEvaluationAssetsDetailedInformationaboutExplorationandEvaluationAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure Of Detailed Information About Exploration For And Evaluation Of Mineral Resources [Table]",
        "label": "Disclosure Of Detailed Information About Exploration For And Evaluation Of Mineral Resources [Table]",
        "documentation": "Disclosure Of Detailed Information About Exploration For And Evaluation Of Mineral Resources [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisclosureOfDetailedInformationAboutFinanceIncomeCostExplanatoryTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutFinanceIncomeCostExplanatoryTableTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/InterestandOtherFinancingExpenseTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of Interest and Other Financing Expense",
        "label": "Disclosure Of Detailed Information About Finance Income (Cost) Explanatory [Table Text Block]",
        "documentation": "Disclosure Of Detailed Information About Finance Income (Cost) Explanatory [Table Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutFinancialInstrumentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutFinancialInstrumentsExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Schedule of Information About Financial Instruments",
        "label": "Disclosure of detailed information about financial instruments [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of detailed information about financial instruments. [Refer: Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r162",
      "r167",
      "r175",
      "r278"
     ]
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutHedgingInstrumentsLineItems",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsForeignCurrencyExchangeRateRiskManagementNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of detailed information about hedging instruments [line items]",
        "label": "Disclosure of detailed information about hedging instruments [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutHedgingInstrumentsTable",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsForeignCurrencyExchangeRateRiskManagementNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of detailed information about hedging instruments [table]",
        "label": "Disclosure of detailed information about hedging instruments [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to details of hedging instruments."
       }
      }
     },
     "auth_ref": [
      "r155",
      "r280"
     ]
    },
    "cnq_DisclosureOfDetailedInformationAboutInventoriesExplanatoryTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutInventoriesExplanatoryTableTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/InventoryTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Schedule of Inventory",
        "label": "Disclosure Of Detailed Information About Inventories Explanatory [Table Text Block]",
        "documentation": "Disclosure Of Detailed Information About Inventories Explanatory [Table Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisclosureOfDetailedInformationAboutNonCurrentLiabilitiesExplanatoryTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutNonCurrentLiabilitiesExplanatoryTableTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of Other Long-term Liabilities",
        "label": "Disclosure Of Detailed Information About Non-Current Liabilities Explanatory [Table Text Block]",
        "documentation": "Disclosure Of Detailed Information About Non-Current Liabilities Explanatory [Table Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Detailed Information about Property, Plant and Equipment",
        "label": "Disclosure of detailed information about property, plant and equipment [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of detailed information about property, plant and equipment. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r17",
      "r241"
     ]
    },
    "cnq_DisclosureOfDetailedInformationAboutResultsOfOperationsFromCrudeOilAndNaturalGasActivitiesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutResultsOfOperationsFromCrudeOilAndNaturalGasActivitiesTableTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure Of Detailed Information About Results Of Operations From Crude Oil And Natural Gas Activities",
        "label": "Disclosure Of Detailed Information About Results Of Operations From Crude Oil And Natural Gas Activities [Table Text Block]",
        "documentation": "Disclosure Of Detailed Information About Results Of Operations From Crude Oil And Natural Gas Activities [Table Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfEarningsPerShareExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfEarningsPerShareExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/NetEarningsPerCommonShare"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Net Earnings Per Common Share",
        "label": "Disclosure of earnings per share [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for earnings per share."
       }
      }
     },
     "auth_ref": [
      "r44"
     ]
    },
    "ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfEntitysReportableSegmentsExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Segmented Information",
        "label": "Disclosure of entity's operating segments [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for operating segments."
       }
      }
     },
     "auth_ref": [
      "r192"
     ]
    },
    "ifrs-full_DisclosureOfExplorationAndEvaluationAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfExplorationAndEvaluationAssetsExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/ExplorationandEvaluationAssets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Exploration and Evaluation Assets",
        "label": "Disclosure of exploration and evaluation assets [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for exploration and evaluation assets."
       }
      }
     },
     "auth_ref": [
      "r151"
     ]
    },
    "ifrs-full_DisclosureOfFairValueMeasurementOfAssetsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFairValueMeasurementOfAssetsLineItems",
     "presentation": [
      "http://www.cnrl.com/role/CriticalAccountingEstimatesandJudgementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of fair value measurement of assets [line items]",
        "label": "Disclosure of fair value measurement of assets [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFairValueMeasurementOfAssetsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFairValueMeasurementOfAssetsTable",
     "presentation": [
      "http://www.cnrl.com/role/CriticalAccountingEstimatesandJudgementsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of fair value measurement of assets [table]",
        "label": "Disclosure of fair value measurement of assets [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the fair value measurement of assets."
       }
      }
     },
     "auth_ref": [
      "r98",
      "r294"
     ]
    },
    "ifrs-full_DisclosureOfFairValueOfInvestmentsInEquityInstrumentsDesignatedAsMeasuredAtFairValueThroughOtherComprehensiveIncomeLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFairValueOfInvestmentsInEquityInstrumentsDesignatedAsMeasuredAtFairValueThroughOtherComprehensiveIncomeLineItems",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]",
        "label": "Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFinanceIncomeExpenseExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFinanceIncomeExpenseExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/InterestandOtherFinancingExpense"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Interest and Other Financing Expense",
        "label": "Disclosure of finance income (cost) [text block]"
       }
      }
     },
     "auth_ref": [
      "r431"
     ]
    },
    "ifrs-full_DisclosureOfFinancialAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialAssetsExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Schedule of Financial Assets",
        "label": "Disclosure of financial assets [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of financial assets. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r175",
      "r278"
     ]
    },
    "ifrs-full_DisclosureOfFinancialInstrumentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialInstrumentsExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstruments"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Financial Instruments",
        "label": "Disclosure of financial instruments [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for financial instruments."
       }
      }
     },
     "auth_ref": [
      "r177"
     ]
    },
    "ifrs-full_DisclosureOfFinancialInstrumentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialInstrumentsLineItems",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandFairValuesofFinancialInstrumentsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsCounterpartyCreditRiskManagementNarrativeDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractNarrativeDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsFinancialInstrumentSensitivitiesDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsPriceandDiscountRateSensitivitiesDetails",
      "http://www.cnrl.com/role/InvestmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of detailed information about financial instruments [line items]",
        "label": "Disclosure of detailed information about financial instruments [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFinancialInstrumentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialInstrumentsTable",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandFairValuesofFinancialInstrumentsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsCounterpartyCreditRiskManagementNarrativeDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsFinancialInstrumentSensitivitiesDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsPriceandDiscountRateSensitivitiesDetails",
      "http://www.cnrl.com/role/InvestmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of detailed information about financial instruments [table]",
        "label": "Disclosure of detailed information about financial instruments [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to details of financial instruments."
       }
      }
     },
     "auth_ref": [
      "r162",
      "r167",
      "r175",
      "r278"
     ]
    },
    "ifrs-full_DisclosureOfFinancialLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialLiabilitiesExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Schedule of Financial Liabilities",
        "label": "Disclosure of financial liabilities [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of financial liabilities. [Refer: Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r175",
      "r278"
     ]
    },
    "ifrs-full_DisclosureOfIncomeTaxExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfIncomeTaxExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxes"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Income Taxes",
        "label": "Disclosure of income tax [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for income taxes."
       }
      }
     },
     "auth_ref": [
      "r9"
     ]
    },
    "ifrs-full_DisclosureOfIndirectMeasurementOfFairValueOfGoodsOrServicesReceivedShareOptionsGrantedDuringPeriodExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfIndirectMeasurementOfFairValueOfGoodsOrServicesReceivedShareOptionsGrantedDuringPeriodExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of Weighted Average Assumptions Used",
        "label": "Disclosure of indirect measurement of fair value of goods or services received, share options granted during period [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of information about indirect, by reference to the fair value of the equity instruments granted, measurement of the fair value of goods or services received as consideration for the entity's share options."
       }
      }
     },
     "auth_ref": [
      "r136"
     ]
    },
    "ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInformationAboutKeyManagementPersonnelExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagement"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Remuneration of Directors and Senior Management",
        "label": "Disclosure of information about key management personnel [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of information about key management personnel. [Refer: Key management personnel of entity or parent [member]]"
       }
      }
     },
     "auth_ref": [
      "r431"
     ]
    },
    "cnq_DisclosureOfInformationAboutLeaseAssetsExplanatoryLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfInformationAboutLeaseAssetsExplanatoryLineItems",
     "presentation": [
      "http://www.cnrl.com/role/LeasesLeaseAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure Of Information About Lease Assets Explanatory [Line Items]",
        "label": "Disclosure Of Information About Lease Assets Explanatory [Line Items]",
        "documentation": "[Line Items] for Disclosure Of Information About Lease Assets Explanatory [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisclosureOfInformationAboutLeaseAssetsExplanatoryTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfInformationAboutLeaseAssetsExplanatoryTable",
     "presentation": [
      "http://www.cnrl.com/role/LeasesLeaseAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure Of Information About Lease Assets Explanatory [Table]",
        "label": "Disclosure Of Information About Lease Assets Explanatory [Table]",
        "documentation": "Disclosure Of Information About Lease Assets Explanatory [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisclosureOfInformationAboutOtherNonCurrentAssetsExplanatoryTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfInformationAboutOtherNonCurrentAssetsExplanatoryTableTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of Other Long-term Assets",
        "label": "Disclosure Of Information About Other Non-Current Assets Explanatory [Table Text Block]",
        "documentation": "Disclosure Of Information About Other Non-Current Assets Explanatory [Table Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfInterestsInJointArrangementsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInterestsInJointArrangementsExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Summary of Assets, Liabilities, Partners' Equity and Equity (Loss) Income Related to Joint Venture",
        "label": "Disclosure of interests in joint arrangements [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of interests in joint arrangements. A joint arrangement is an arrangement of which two or more parties have joint control."
       }
      }
     },
     "auth_ref": [
      "r79"
     ]
    },
    "ifrs-full_DisclosureOfInventoriesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInventoriesExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/Inventory"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Inventory",
        "label": "Disclosure of inventories [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for inventories."
       }
      }
     },
     "auth_ref": [
      "r25"
     ]
    },
    "ifrs-full_DisclosureOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/Investments"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Investments",
        "label": "Disclosure of investments other than investments accounted for using equity method [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of investments other than investments accounted for using the equity method. [Refer: Investments other than investments accounted for using equity method]"
       }
      }
     },
     "auth_ref": [
      "r431"
     ]
    },
    "ifrs-full_DisclosureOfIssuedCapitalExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfIssuedCapitalExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapital"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Share Capital",
        "label": "Disclosure of issued capital [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of issued capital. [Refer: Issued capital]"
       }
      }
     },
     "auth_ref": [
      "r431"
     ]
    },
    "ifrs-full_DisclosureOfJointVenturesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfJointVenturesLineItems",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofAssetsLiabilitiesPartnersEquityandEquityLossIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of joint ventures [line items]",
        "label": "Disclosure of joint ventures [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfJointVenturesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfJointVenturesTable",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofAssetsLiabilitiesPartnersEquityandEquityLossIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of joint ventures [table]",
        "label": "Disclosure of joint ventures [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to joint ventures."
       }
      }
     },
     "auth_ref": [
      "r37",
      "r39",
      "r93",
      "r291"
     ]
    },
    "ifrs-full_DisclosureOfLeasesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfLeasesExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/Leases"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Leases",
        "label": "Disclosure of leases [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for leases."
       }
      }
     },
     "auth_ref": [
      "r115",
      "r116"
     ]
    },
    "cnq_DisclosureOfMajorComponentsOfTaxExpenseIncomeLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfMajorComponentsOfTaxExpenseIncomeLineItems",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure Of Major Components Of Tax Expense (Income) [Line Items]",
        "label": "Disclosure Of Major Components Of Tax Expense (Income) [Line Items]",
        "documentation": "[Line Items] for Disclosure Of Major Components Of Tax Expense (Income) [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisclosureOfMajorComponentsOfTaxExpenseIncomeTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfMajorComponentsOfTaxExpenseIncomeTable",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure Of Major Components Of Tax Expense (Income) [Table]",
        "label": "Disclosure Of Major Components Of Tax Expense (Income) [Table]",
        "documentation": "Disclosure Of Major Components Of Tax Expense (Income) [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisclosureOfMajorComponentsOfTaxExpenseIncomeTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfMajorComponentsOfTaxExpenseIncomeTableTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Schedule of Provision for Income Tax",
        "label": "Disclosure Of Major Components Of Tax Expense (Income) [Table Text Block]",
        "documentation": "Disclosure Of Major Components Of Tax Expense (Income) [Table Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfMaterialAccountingPolicyInformationExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Accounting Policies",
        "label": "Disclosure of material accounting policy information [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure of material accounting policy information applied by the entity."
       }
      }
     },
     "auth_ref": [
      "r226",
      "r298",
      "r307"
     ]
    },
    "ifrs-full_DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesLineItems",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtScheduleofDebtRepaymentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of maturity analysis for non-derivative financial liabilities [line items]",
        "label": "Disclosure of maturity analysis for non-derivative financial liabilities [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesTable",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtScheduleofDebtRepaymentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of maturity analysis for non-derivative financial liabilities [table]",
        "label": "Disclosure of maturity analysis for non-derivative financial liabilities [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the maturity analysis for non-derivative financial liabilities."
       }
      }
     },
     "auth_ref": [
      "r170",
      "r289"
     ]
    },
    "ifrs-full_DisclosureOfNumberAndWeightedAverageExercisePricesOfShareOptionsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfNumberAndWeightedAverageExercisePricesOfShareOptionsExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Summary of Stock Option Activity",
        "label": "Disclosure of number and weighted average exercise prices of share options [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the number and weighted average exercise prices of share options. [Refer: Weighted average [member]]"
       }
      }
     },
     "auth_ref": [
      "r132",
      "r272"
     ]
    },
    "ifrs-full_DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/CapitalDisclosures"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Capital Disclosures",
        "label": "Disclosure of objectives, policies and processes for managing capital [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of information that enables users of financial statements to evaluate the entity's objectives, policies and processes for managing capital."
       }
      }
     },
     "auth_ref": [
      "r308"
     ]
    },
    "ifrs-full_DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalLineItems",
     "presentation": [
      "http://www.cnrl.com/role/CapitalDisclosuresNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of objectives, policies and processes for managing capital [line items]",
        "label": "Disclosure of objectives, policies and processes for managing capital [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalTable",
     "presentation": [
      "http://www.cnrl.com/role/CapitalDisclosuresNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of objectives, policies and processes for managing capital [table]",
        "label": "Disclosure of objectives, policies and processes for managing capital [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the objectives, policies and processes for managing capital."
       }
      }
     },
     "auth_ref": [
      "r309"
     ]
    },
    "ifrs-full_DisclosureOfOperatingSegmentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOperatingSegmentsExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of Operating Segments",
        "label": "Disclosure of operating segments [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of operating segments. [Refer: Operating segments [member]]"
       }
      }
     },
     "auth_ref": [
      "r181"
     ]
    },
    "ifrs-full_DisclosureOfOperatingSegmentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOperatingSegmentsLineItems",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarningsParenthetical",
      "http://www.cnrl.com/role/LeasesScheduleofLeaseAssetsDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesSegmentedAssetRetirementObligationsDetails",
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SegmentedInformationSegmentedAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of operating segments [line items]",
        "label": "Disclosure of operating segments [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfOperatingSegmentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOperatingSegmentsTable",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarningsParenthetical",
      "http://www.cnrl.com/role/LeasesScheduleofLeaseAssetsDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesSegmentedAssetRetirementObligationsDetails",
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SegmentedInformationSegmentedAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of operating segments [table]",
        "label": "Disclosure of operating segments [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to operating segments."
       }
      }
     },
     "auth_ref": [
      "r181"
     ]
    },
    "ifrs-full_DisclosureOfOtherNoncurrentAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOtherNoncurrentAssetsExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other Long-Term Assets",
        "label": "Disclosure of other non-current assets [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of other non-current assets. [Refer: Other non-current assets]"
       }
      }
     },
     "auth_ref": [
      "r431"
     ]
    },
    "ifrs-full_DisclosureOfOtherNoncurrentLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOtherNoncurrentLiabilitiesExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilities"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other Long-Term Liabilities",
        "label": "Disclosure of other non-current liabilities [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of other non-current liabilities. [Refer: Other non-current liabilities]"
       }
      }
     },
     "auth_ref": [
      "r431"
     ]
    },
    "ifrs-full_DisclosureOfOtherProvisionsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOtherProvisionsLineItems",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of other provisions [line items]",
        "label": "Disclosure of other provisions [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfOtherProvisionsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOtherProvisionsTable",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of other provisions [table]",
        "label": "Disclosure of other provisions [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to other provisions."
       }
      }
     },
     "auth_ref": [
      "r53",
      "r255"
     ]
    },
    "ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfPropertyPlantAndEquipmentExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipment"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Property, Plant and Equipment",
        "label": "Disclosure of property, plant and equipment [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for property, plant and equipment."
       }
      }
     },
     "auth_ref": [
      "r20"
     ]
    },
    "ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfPropertyPlantAndEquipmentLineItems",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentSummaryofNetAssetsAcquiredDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of detailed information about property, plant and equipment [line items]",
        "label": "Disclosure of detailed information about property, plant and equipment [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfPropertyPlantAndEquipmentTable",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentSummaryofNetAssetsAcquiredDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of detailed information about property, plant and equipment [table]",
        "label": "Disclosure of detailed information about property, plant and equipment [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to details of property, plant and equipment."
       }
      }
     },
     "auth_ref": [
      "r17",
      "r241"
     ]
    },
    "cnq_DisclosureOfQuantitativeInformationAboutLeaseLiabilitiesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfQuantitativeInformationAboutLeaseLiabilitiesTableTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/LeasesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Schedule of Lease Liabilities",
        "label": "Disclosure Of Quantitative Information About Lease Liabilities [Table Text Block]",
        "documentation": "Disclosure Of Quantitative Information About Lease Liabilities [Table Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/LeasesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Schedule of Lease Assets",
        "label": "Disclosure of quantitative information about right-of-use assets [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of quantitative information about right-of-use assets. [Refer: Right-of-use assets]"
       }
      }
     },
     "auth_ref": [
      "r111",
      "r207"
     ]
    },
    "ifrs-full_DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Summary of Range of Exercise Prices of Stock Options Outstanding",
        "label": "Disclosure of range of exercise prices of outstanding share options [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the range of exercise prices for outstanding share options."
       }
      }
     },
     "auth_ref": [
      "r133"
     ]
    },
    "ifrs-full_DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsLineItems",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of range of exercise prices of outstanding share options [line items]",
        "label": "Disclosure of range of exercise prices of outstanding share options [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsTable",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of range of exercise prices of outstanding share options [table]",
        "label": "Disclosure of range of exercise prices of outstanding share options [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the range of exercise prices of outstanding share options."
       }
      }
     },
     "auth_ref": [
      "r133"
     ]
    },
    "cnq_DisclosureOfReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAndAverageEffectiveTaxRateTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAndAverageEffectiveTaxRateTableTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Schedule of Provision for Income Tax Reconciliation",
        "label": "Disclosure Of Reconciliation Of Accounting Profit Multiplied By Applicable Tax Rates And Average Effective Tax Rate [Table Text Block]",
        "documentation": "Disclosure Of Reconciliation Of Accounting Profit Multiplied By Applicable Tax Rates And Average Effective Tax Rate [Table Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Reconciliation of Liabilities Arising from Financing Activities",
        "label": "Disclosure of reconciliation of liabilities arising from financing activities [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the reconciliation of liabilities arising from financing activities. [Refer: Liabilities arising from financing activities]"
       }
      }
     },
     "auth_ref": [
      "r223",
      "r350"
     ]
    },
    "ifrs-full_DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesLineItems",
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationLiabilitiesArisingfromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of reconciliation of liabilities arising from financing activities [line items]",
        "label": "Disclosure of reconciliation of liabilities arising from financing activities [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesTable",
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationLiabilitiesArisingfromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of reconciliation of liabilities arising from financing activities [table]",
        "label": "Disclosure of reconciliation of liabilities arising from financing activities [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the reconciliation of liabilities arising from financing activities."
       }
      }
     },
     "auth_ref": [
      "r223",
      "r350"
     ]
    },
    "cnq_DisclosureOfSupplementaryOilAndGasInformationExplanatoryTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureOfSupplementaryOilAndGasInformationExplanatoryTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnaudited"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Supplementary Oil And Gas Information (Unaudited)",
        "label": "Disclosure Of Supplementary Oil And Gas Information Explanatory [Text Block]",
        "documentation": "Disclosure Of Supplementary Oil And Gas Information Explanatory [Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Summary of Major Temporary Differences, Movements in Deferred Tax Assets and Liabilities, and Net Deferred Income Tax Liability",
        "label": "Disclosure of temporary difference, unused tax losses and unused tax credits [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of types of temporary differences, unused tax losses and unused tax credits. [Refer: Unused tax credits [member]; Unused tax losses [member]; Temporary differences [member]]"
       }
      }
     },
     "auth_ref": [
      "r8",
      "r234"
     ]
    },
    "ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMovementsinDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of temporary difference, unused tax losses and unused tax credits [line items]",
        "label": "Disclosure of temporary difference, unused tax losses and unused tax credits [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMovementsinDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of temporary difference, unused tax losses and unused tax credits [table]",
        "label": "Disclosure of temporary difference, unused tax losses and unused tax credits [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to temporary differences, unused tax losses and unused tax credits."
       }
      }
     },
     "auth_ref": [
      "r8",
      "r234"
     ]
    },
    "ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesShareBasedCompensationDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesWeightedAverageAssumptionsusedtoCalculateShareBasedCompensationLiabilityDetails",
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of terms and conditions of share-based payment arrangement [line items]",
        "label": "Disclosure of terms and conditions of share-based payment arrangement [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesShareBasedCompensationDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesWeightedAverageAssumptionsusedtoCalculateShareBasedCompensationLiabilityDetails",
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of terms and conditions of share-based payment arrangement [table]",
        "label": "Disclosure of terms and conditions of share-based payment arrangement [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to terms and conditions of share-based payment arrangements."
       }
      }
     },
     "auth_ref": [
      "r134",
      "r273"
     ]
    },
    "ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfTransactionsBetweenRelatedPartiesExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Remuneration of Non-management Directors and Senior Management",
        "label": "Disclosure of transactions between related parties [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of transactions between the entity and its related parties. [Refer: Total for all related parties [member]]"
       }
      }
     },
     "auth_ref": [
      "r31",
      "r246"
     ]
    },
    "ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfTransactionsBetweenRelatedPartiesLineItems",
     "presentation": [
      "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of transactions between related parties [line items]",
        "label": "Disclosure of transactions between related parties [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfTransactionsBetweenRelatedPartiesTable",
     "presentation": [
      "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of transactions between related parties [table]",
        "label": "Disclosure of transactions between related parties [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to transactions between related parties."
       }
      }
     },
     "auth_ref": [
      "r32",
      "r247"
     ]
    },
    "cnq_DisclosureofleasesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisclosureofleasesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disclosure of leases [Abstract]",
        "label": "Disclosure of leases [Abstract]",
        "documentation": "Disclosure of leases [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DiscountRateMeasurementInputMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DiscountRateMeasurementInputMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsPriceandDiscountRateSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Discount rate",
        "label": "Discount rate, measurement input [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a discount rate used as a measurement input used in valuation techniques based on a present value calculation."
       }
      }
     },
     "auth_ref": [
      "r420"
     ]
    },
    "cnq_DiscountRateUsedInCurrentMeasurementOfHigherOfFairValueLessCostsOfDisposalOrPreviousEstimateOfValueInUse": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DiscountRateUsedInCurrentMeasurementOfHigherOfFairValueLessCostsOfDisposalOrPreviousEstimateOfValueInUse",
     "presentation": [
      "http://www.cnrl.com/role/CriticalAccountingEstimatesandJudgementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Discount rate used in current measurement of higher of fair value less costs of disposal or previous estimate of value in use (as a percent)",
        "label": "Discount Rate Used In Current Measurement Of Higher Of Fair Value Less Costs Of Disposal Or Previous Estimate Of Value In Use",
        "documentation": "Discount Rate Used In Current Measurement Of Higher Of Fair Value Less Costs Of Disposal Or Previous Estimate Of Value In Use"
       }
      }
     },
     "auth_ref": []
    },
    "srt_DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesLineItems",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow [Line Items]",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow [Line Items]",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesTable",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow [Table]",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow [Table]",
        "documentation": "Disclosure of information about standardized measure of discounted future net cash flow for interest in proved oil and gas reserves and oil and gas subject to long-term supply, purchase, and similar agreement or contract with government and authority, in oil- and gas-producing activities."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "cnq_DisposalGroupAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisposalGroupAxis",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disposal Group [Axis]",
        "label": "Disposal Group [Axis]",
        "documentation": "Disposal Group"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisposalGroupDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisposalGroupDomain",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disposal Group [Domain]",
        "label": "Disposal Group [Domain]",
        "documentation": "Disposal Group [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisposalGroupIncludingDiscontinuedOperationsCarryingValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisposalGroupIncludingDiscontinuedOperationsCarryingValue",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Gain on remeasurement recorded in the transaction",
        "label": "Disposal Group, Including Discontinued Operations, Carrying Value",
        "documentation": "Disposal Group, Including Discontinued Operations, Carrying Value"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisposalOfBusinessOwnershipInterest": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisposalOfBusinessOwnershipInterest",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Disposal of business, ownership interest",
        "label": "Disposal Of Business, Ownership Interest",
        "documentation": "Disposal Of Business, Ownership Interest"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisposalsExplorationForAndEvaluationOfMineralResources": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisposalsExplorationForAndEvaluationOfMineralResources",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/ExplorationandEvaluationAssetsDetailedInformationaboutExplorationandEvaluationAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Derecognitions and other",
        "label": "Disposals, Exploration For And Evaluation Of Mineral Resources",
        "documentation": "Disposals, Exploration For And Evaluation Of Mineral Resources"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_DisposalsOfRightOfUseAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "DisposalsOfRightOfUseAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/LeasesLeaseAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedLabel": "Derecognitions",
        "label": "Disposals Of Right-Of-Use Assets",
        "documentation": "Disposals Of Right-Of-Use Assets"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisposalsPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisposalsPropertyPlantAndEquipment",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Divestitures/ or Disposal",
        "label": "Disposals, property, plant and equipment"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease in property, plant and equipment resulting from disposals. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r12",
      "r237"
     ]
    },
    "ifrs-full_DividendsPaid": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DividendsPaid",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofChangesinEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Dividends on common shares",
        "label": "Dividends recognised as distributions to owners"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of dividends recognised as distributions to owners."
       }
      }
     },
     "auth_ref": [
      "r216",
      "r297",
      "r306"
     ]
    },
    "ifrs-full_DividendsPaidClassifiedAsFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DividendsPaidClassifiedAsFinancingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": -1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Dividends on common shares",
        "label": "Dividends paid, classified as financing activities"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for dividends paid by the entity, classified as financing activities."
       }
      }
     },
     "auth_ref": [
      "r66"
     ]
    },
    "ifrs-full_DividendsRecognisedAsDistributionsToOwnersPerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DividendsRecognisedAsDistributionsToOwnersPerShare",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Dividend declared (in CAD per share)",
        "label": "Dividends recognised as distributions to owners per share"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount, per share, of dividends recognised as distributions to owners."
       }
      }
     },
     "auth_ref": [
      "r216",
      "r297",
      "r306"
     ]
    },
    "dei_DocumentAnnualReport": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentAnnualReport",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Document Annual Report",
        "label": "Document Annual Report",
        "documentation": "Boolean flag that is true only for a form used as an annual report."
       }
      }
     },
     "auth_ref": [
      "r396",
      "r397",
      "r398"
     ]
    },
    "dei_DocumentFinStmtErrorCorrectionFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentFinStmtErrorCorrectionFlag",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Document Financial Statement Error Correction",
        "label": "Document Financial Statement Error Correction [Flag]",
        "documentation": "Indicates whether any of the financial statement period in the filing include a restatement due to error correction."
       }
      }
     },
     "auth_ref": [
      "r396",
      "r397",
      "r398",
      "r399"
     ]
    },
    "dei_DocumentFiscalPeriodFocus": {
     "xbrltype": "fiscalPeriodItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentFiscalPeriodFocus",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Document Fiscal Period Focus",
        "label": "Document Fiscal Period Focus",
        "documentation": "Fiscal period values are FY, Q1, Q2, and Q3. 1st, 2nd and 3rd quarter 10-Q or 10-QT statements have value Q1, Q2, and Q3 respectively, with 10-K, 10-KT or other fiscal year statements having FY."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentFiscalYearFocus": {
     "xbrltype": "gYearItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentFiscalYearFocus",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Document Fiscal Year Focus",
        "label": "Document Fiscal Year Focus",
        "documentation": "This is focus fiscal year of the document report in YYYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentInformationLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentInformationLineItems",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Document Information [Line Items]",
        "label": "Document Information [Line Items]",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentInformationTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentInformationTable",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Document Information [Table]",
        "label": "Document Information [Table]",
        "documentation": "Container to support the formal attachment of each official or unofficial, public or private document as part of a submission package."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentPeriodEndDate": {
     "xbrltype": "dateItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentPeriodEndDate",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Document Period End Date",
        "label": "Document Period End Date",
        "documentation": "For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentRegistrationStatement": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentRegistrationStatement",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Document Registration Statement",
        "label": "Document Registration Statement",
        "documentation": "Boolean flag that is true only for a form used as a registration statement."
       }
      }
     },
     "auth_ref": [
      "r392"
     ]
    },
    "dei_DocumentType": {
     "xbrltype": "submissionTypeItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentType",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Document Type",
        "label": "Document Type",
        "documentation": "The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'."
       }
      }
     },
     "auth_ref": []
    },
    "cnq_EarningsBeforeTaxIncludingInterestExpenseDepletionDepreciationAndAmortizationSinceAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "EarningsBeforeTaxIncludingInterestExpenseDepletionDepreciationAndAmortizationSinceAcquisitionDate",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Earnings before tax since acquisition",
        "label": "Earnings Before Tax, Including Interest Expense, Depletion, Depreciation And Amortization Since Acquisition Date",
        "documentation": "Earnings Before Tax, Including Interest Expense, Depletion, Depreciation And Amortization Since Acquisition Date"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_EarningsPerShareAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EarningsPerShareAbstract",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Net earnings per common share",
        "label": "Earnings per share [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_EarningsPerShareExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EarningsPerShareExplanatory",
     "presentation": [
      "http://www.cnrl.com/role/NetEarningsPerCommonShareTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Net Earnings Per Common Share",
        "label": "Earnings per share [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of earnings per share."
       }
      }
     },
     "auth_ref": [
      "r40"
     ]
    },
    "ifrs-full_EarningsPerShareLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EarningsPerShareLineItems",
     "presentation": [
      "http://www.cnrl.com/role/NetEarningsPerCommonShareNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Earnings per share [line items]",
        "label": "Earnings per share [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_EarningsPerShareTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EarningsPerShareTable",
     "presentation": [
      "http://www.cnrl.com/role/NetEarningsPerCommonShareNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Earnings per share [table]",
        "label": "Earnings per share [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to earnings per share."
       }
      }
     },
     "auth_ref": [
      "r40"
     ]
    },
    "cnq_EdmontonC5PlusCondensateMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "EdmontonC5PlusCondensateMember",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Edmonton C5+",
        "label": "Edmonton C5Plus Condensate [Member]",
        "documentation": "Edmonton C5Plus Condensate [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_EliminationOfIntersegmentAmountsAndOtherMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "EliminationOfIntersegmentAmountsAndOtherMember",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Inter-segment Elimination and Other",
        "label": "Elimination Of Intersegment Amounts And Other [Member]",
        "documentation": "Elimination Of Intersegment Amounts And Other"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_EmployeeStockOption1Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "EmployeeStockOption1Member",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesNarrativeDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesWeightedAverageAssumptionsusedtoCalculateShareBasedCompensationLiabilityDetails",
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Stock options",
        "label": "Employee Stock Option1 [Member]",
        "documentation": "Employee Stock Option1 [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressAddressLine1": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityAddressAddressLine1",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Entity Address, Address Line One",
        "label": "Entity Address, Address Line One",
        "documentation": "Address Line 1 such as Attn, Building Name, Street Name"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressAddressLine2": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityAddressAddressLine2",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Entity Address, Address Line Two",
        "label": "Entity Address, Address Line Two",
        "documentation": "Address Line 2 such as Street or Suite number"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressCityOrTown": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityAddressCityOrTown",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Entity Address, City or Town",
        "label": "Entity Address, City or Town",
        "documentation": "Name of the City or Town"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressCountry": {
     "xbrltype": "countryCodeItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityAddressCountry",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Entity Address, Country",
        "label": "Entity Address, Country",
        "documentation": "ISO 3166-1 alpha-2 country code."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressPostalZipCode": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityAddressPostalZipCode",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Entity Address, Postal Zip Code",
        "label": "Entity Address, Postal Zip Code",
        "documentation": "Code for the postal or zip code"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressStateOrProvince": {
     "xbrltype": "stateOrProvinceItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityAddressStateOrProvince",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Entity Address, State or Province",
        "label": "Entity Address, State or Province",
        "documentation": "Name of the state or province."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressesAddressTypeAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityAddressesAddressTypeAxis",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Entity Addresses, Address Type [Axis]",
        "label": "Entity Addresses, Address Type [Axis]",
        "documentation": "The axis of a table defines the relationship between the domain members or categories in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityCentralIndexKey": {
     "xbrltype": "centralIndexKeyItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityCentralIndexKey",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Entity Central Index Key",
        "label": "Entity Central Index Key",
        "documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK."
       }
      }
     },
     "auth_ref": [
      "r394"
     ]
    },
    "dei_EntityCommonStockSharesOutstanding": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityCommonStockSharesOutstanding",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Entity Common Stock, Shares Outstanding",
        "label": "Entity Common Stock, Shares Outstanding",
        "documentation": "Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityCurrentReportingStatus": {
     "xbrltype": "yesNoItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityCurrentReportingStatus",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Entity Current Reporting Status",
        "label": "Entity Current Reporting Status",
        "documentation": "Indicate 'Yes' or 'No' whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityDomain",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofAssetsLiabilitiesPartnersEquityandEquityLossIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Entity [Domain]",
        "label": "Entity [Domain]",
        "documentation": "All the names of the entities being reported upon in a document. Any legal structure used to conduct activities or to hold assets. Some examples of such structures are corporations, partnerships, limited liability companies, grantor trusts, and other trusts. This item does not include business and geographical segments which are included in the geographical or business segments domains."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityEmergingGrowthCompany": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityEmergingGrowthCompany",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Entity Emerging Growth Company",
        "label": "Entity Emerging Growth Company",
        "documentation": "Indicate if registrant meets the emerging growth company criteria."
       }
      }
     },
     "auth_ref": [
      "r394"
     ]
    },
    "dei_EntityFileNumber": {
     "xbrltype": "fileNumberItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityFileNumber",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Entity File Number",
        "label": "Entity File Number",
        "documentation": "Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityIncorporationStateCountryCode": {
     "xbrltype": "edgarStateCountryItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityIncorporationStateCountryCode",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Entity Incorporation, State or Country Code",
        "label": "Entity Incorporation, State or Country Code",
        "documentation": "Two-character EDGAR code representing the state or country of incorporation."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityInteractiveDataCurrent": {
     "xbrltype": "yesNoItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityInteractiveDataCurrent",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Entity Interactive Data Current",
        "label": "Entity Interactive Data Current",
        "documentation": "Boolean flag that is true when the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files)."
       }
      }
     },
     "auth_ref": [
      "r400"
     ]
    },
    "dei_EntityRegistrantName": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityRegistrantName",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Entity Registrant Name",
        "label": "Entity Registrant Name",
        "documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC."
       }
      }
     },
     "auth_ref": [
      "r394"
     ]
    },
    "ifrs-full_Equity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Equity",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_EquityAndLiabilities",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/CapitalDisclosuresScheduleofDebttoBookCapitalizationRatioDetails",
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets",
      "http://www.cnrl.com/role/ConsolidatedStatementsofChangesinEquity",
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofAssetsLiabilitiesPartnersEquityandEquityLossIncomeDetails",
      "http://www.cnrl.com/role/ShareCapitalOutstandingCommonSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Shareholders' equity",
        "periodStartLabel": "Balance \u2013 beginning of year",
        "periodEndLabel": "Balance \u2013 end of year",
        "terseLabel": "Partners' equity",
        "verboseLabel": "Total shareholders' equity",
        "label": "Equity"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of residual interest in the assets of the entity after deducting all its liabilities."
       }
      }
     },
     "auth_ref": [
      "r74",
      "r76",
      "r94",
      "r95",
      "r97",
      "r248",
      "r264",
      "r292",
      "r293",
      "r299",
      "r317",
      "r324"
     ]
    },
    "ifrs-full_EquityAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EquityAbstract",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "SHAREHOLDERS' EQUITY",
        "label": "Equity [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_EquityAndLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EquityAndLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Liabilities and shareholders' equity",
        "label": "Equity and liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of the entity's equity and liabilities. [Refer: Equity; Liabilities]"
       }
      }
     },
     "auth_ref": [
      "r317"
     ]
    },
    "cnq_EquityIssuedCommonSharesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "EquityIssuedCommonSharesAbstract",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalOutstandingCommonSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Amount",
        "label": "Equity Issued Common Shares [Abstract]",
        "documentation": "Equity Issued Common Shares"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ExchangeDifferencesOnTranslationAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ExchangeDifferencesOnTranslationAbstract",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Foreign currency translation adjustment",
        "label": "Exchange differences on translation [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ExercisePriceOfOutstandingShareOptions2019": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ExercisePriceOfOutstandingShareOptions2019",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Range of exercise prices",
        "label": "Exercise price of outstanding share options"
       }
      },
      "en": {
       "role": {
        "documentation": "The exercise price of outstanding share options."
       }
      }
     },
     "auth_ref": [
      "r133"
     ]
    },
    "cnq_ExercisePriceRangeEightMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ExercisePriceRangeEightMember",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "$45.00 - $49.99",
        "label": "Exercise Price Range Eight [Member]",
        "documentation": "Exercise Price Range Six [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ExercisePriceRangeFiveMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ExercisePriceRangeFiveMember",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "$30.00 - $34.99",
        "label": "Exercise Price Range Five [Member]",
        "documentation": "Exercise Price Range Five [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ExercisePriceRangeFourMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ExercisePriceRangeFourMember",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "$25.00 - $29.99",
        "label": "Exercise Price Range Four [Member]",
        "documentation": "Exercise Price Range Four [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ExercisePriceRangeNineMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ExercisePriceRangeNineMember",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "$50.00 \u2013 $52.98",
        "label": "Exercise Price Range Nine [Member]",
        "documentation": "Exercise Price Range Nine"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ExercisePriceRangeOneMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ExercisePriceRangeOneMember",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "$10.38 \u2013 $14.99",
        "label": "Exercise Price Range One [Member]",
        "documentation": "Exercise Price Range One [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ExercisePriceRangeSevenMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ExercisePriceRangeSevenMember",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "$40.00 - $44.99",
        "label": "Exercise Price Range Seven [Member]",
        "documentation": "Exercise Price Range Seven"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ExercisePriceRangeSixMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ExercisePriceRangeSixMember",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "$35.00 \u2013 $39.99",
        "label": "Exercise Price Range Six [Member]",
        "documentation": "Exercise Price Range Six"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ExercisePriceRangeThreeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ExercisePriceRangeThreeMember",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "$20.00 - $24.99",
        "label": "Exercise Price Range Three [Member]",
        "documentation": "Exercise Price Range Three [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ExercisePriceRangeTwoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ExercisePriceRangeTwoMember",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "$15.00 \u2013 $19.99",
        "label": "Exercise Price Range Two [Member]",
        "documentation": "Exercise Price Range Two [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ExpectedCreditLossRate": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ExpectedCreditLossRate",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCounterpartyCreditRiskManagementNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Expected credit loss rate",
        "label": "Expected credit loss rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The rate of expected credit losses, calculated as percentage of the gross carrying amount. Expected credit losses are the weighted average of credit losses with the respective risks of a default occurring as the weights."
       }
      }
     },
     "auth_ref": [
      "r367",
      "r371"
     ]
    },
    "ifrs-full_ExpectedDividendAsPercentageShareOptionsGranted": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ExpectedDividendAsPercentageShareOptionsGranted",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesWeightedAverageAssumptionsusedtoCalculateShareBasedCompensationLiabilityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Expected dividend yield",
        "label": "Expected dividend as percentage, share options granted"
       }
      },
      "en": {
       "role": {
        "documentation": "The percentage of an expected dividend used to calculate the fair value of share options granted."
       }
      }
     },
     "auth_ref": [
      "r135"
     ]
    },
    "cnq_ExpectedForfeitureAsPercentageShareOptionsGranted": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ExpectedForfeitureAsPercentageShareOptionsGranted",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesWeightedAverageAssumptionsusedtoCalculateShareBasedCompensationLiabilityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Expected forfeiture rate",
        "label": "Expected Forfeiture As Percentage, Share Options Granted",
        "documentation": "Expected Forfeiture As Percentage, Share Options Granted"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ExpenseArisingFromExplorationForAndEvaluationOfMineralResourcesNetOfAdditions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ExpenseArisingFromExplorationForAndEvaluationOfMineralResourcesNetOfAdditions",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCostsIncurredinCrudeOilandNaturalGasActivitiesDetails": {
       "parentTag": "cnq_CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities1",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCostsIncurredinCrudeOilandNaturalGasActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Exploration",
        "label": "Expense Arising From Exploration For And Evaluation Of Mineral Resources, Net Of Additions",
        "documentation": "Expense Arising From Exploration For And Evaluation Of Mineral Resources, Net Of Additions"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ExpenseByNature": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ExpenseByNature",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": "ifrs-full_ProfitLossBeforeTax",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Total expenses",
        "label": "Expenses, by nature"
       }
      }
     },
     "auth_ref": [
      "r337"
     ]
    },
    "ifrs-full_ExpenseByNatureAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ExpenseByNatureAbstract",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Expenses",
        "label": "Expenses by nature [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ExpenseFromSharebasedPaymentTransactionsWithEmployees",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesShareBasedCompensationDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Share-based compensation",
        "verboseLabel": "Share-based compensation expense",
        "label": "Expense from share-based payment transactions with employees"
       }
      }
     },
     "auth_ref": [
      "r433"
     ]
    },
    "ifrs-full_ExpenseRelatingToShorttermLeasesForWhichRecognitionExemptionHasBeenUsed": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ExpenseRelatingToShorttermLeasesForWhichRecognitionExemptionHasBeenUsed",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/LeasesScheduleofLeaseLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Expenses relating to short-term leases",
        "label": "Expense relating to short-term leases for which recognition exemption has been used"
       }
      }
     },
     "auth_ref": [
      "r106",
      "r202"
     ]
    },
    "ifrs-full_ExpenseRelatingToVariableLeasePaymentsNotIncludedInMeasurementOfLeaseLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ExpenseRelatingToVariableLeasePaymentsNotIncludedInMeasurementOfLeaseLiabilities",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/LeasesScheduleofLeaseLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Variable lease payments not included in the measurement of lease liabilities",
        "label": "Expense relating to variable lease payments not included in measurement of lease liabilities"
       }
      }
     },
     "auth_ref": [
      "r107",
      "r203"
     ]
    },
    "cnq_ExplorationAndEvaluationAssetsDerecognizedThroughDepletionDepreciationAndAmortizationExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ExplorationAndEvaluationAssetsDerecognizedThroughDepletionDepreciationAndAmortizationExpense",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarningsParenthetical",
      "http://www.cnrl.com/role/ExplorationandEvaluationAssetsDetailedInformationaboutExplorationandEvaluationAssetsDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Exploration and evaluation assets derecognized through depletion, depreciation and amortization expense",
        "label": "Exploration And Evaluation Assets Derecognized Through Depletion, Depreciation And Amortization Expense",
        "documentation": "Exploration And Evaluation Assets Derecognized Through Depletion, Depreciation And Amortization Expense"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ExplorationAndEvaluationAssetsRecognisedAsOfAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ExplorationAndEvaluationAssetsRecognisedAsOfAcquisitionDate",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/PropertyPlantandEquipmentSummaryofNetAssetsAcquiredDetails": {
       "parentTag": "ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentSummaryofNetAssetsAcquiredDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Exploration and evaluation assets",
        "label": "Exploration And Evaluation Assets Recognised As Of Acquisition Date",
        "documentation": "Exploration And Evaluation Assets Recognised As Of Acquisition Date"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ExplorationAndEvaluationAssetsRecognizedAsOfAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ExplorationAndEvaluationAssetsRecognizedAsOfAcquisitionDate",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Exploration and evaluation assets",
        "label": "Exploration And Evaluation Assets Recognized As Of Acquisition Date",
        "documentation": "Exploration And Evaluation Assets Recognized As Of Acquisition Date"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ExplorationAndProductionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ExplorationAndProductionMember",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Exploration and Production",
        "label": "Exploration And Production [Member]",
        "documentation": "Exploration And Production [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ExplorationForAndEvaluationOfMineralResourcesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ExplorationForAndEvaluationOfMineralResourcesAbstract",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Exploration and evaluation assets",
        "label": "Exploration For And Evaluation Of Mineral Resources [Abstract]",
        "documentation": "Exploration For And Evaluation Of Mineral Resources [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "srt_ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails": {
       "parentTag": "srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Extensions, discoveries and improved recovery",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Extension, Discovery, and Improved Recovery",
        "documentation": "Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of extensions, discoveries and improved recovery of proved oil and gas reserves."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_ExtractiveIndustriesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ExtractiveIndustriesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Extractive Industries [Abstract]",
        "label": "Extractive Industries [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_FieldEquipmentAndPowerMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "FieldEquipmentAndPowerMember",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails",
      "http://www.cnrl.com/role/LeasesLeaseAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Field equipment and power",
        "label": "Field Equipment And Power [Member]",
        "documentation": "Field Equipment And Power [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FinanceCosts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinanceCosts",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/InterestandOtherFinancingExpenseDetails": {
       "parentTag": "ifrs-full_FinanceIncomeCost",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails",
      "http://www.cnrl.com/role/InterestandOtherFinancingExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Interest expense on long-term debt and lease liabilities",
        "terseLabel": "Interest and other financing expense",
        "label": "Finance costs"
       }
      }
     },
     "auth_ref": [
      "r331"
     ]
    },
    "ifrs-full_FinanceIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinanceIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/InterestandOtherFinancingExpenseDetails": {
       "parentTag": "ifrs-full_FinanceIncomeCost",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/InterestandOtherFinancingExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Interest (income) and other expense",
        "label": "Finance income"
       }
      }
     },
     "auth_ref": [
      "r438"
     ]
    },
    "ifrs-full_FinanceIncomeCost": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinanceIncomeCost",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": -1.0,
       "order": 4.0
      },
      "http://www.cnrl.com/role/InterestandOtherFinancingExpenseDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/InterestandOtherFinancingExpenseDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofAssetsLiabilitiesPartnersEquityandEquityLossIncomeDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Interest and other financing expense",
        "negatedTotalLabel": "Interest and other financing expense",
        "label": "Finance income (cost)"
       }
      }
     },
     "auth_ref": [
      "r438"
     ]
    },
    "cnq_FinancialInstrumentsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "FinancialInstrumentsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Financial Instruments [Abstract]",
        "label": "Financial Instruments [Abstract]",
        "documentation": "Financial Instruments [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FinancialLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandFairValuesofFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Financial liabilities",
        "label": "Financial liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity\u2019s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity\u2019s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity\u2019s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity\u2019s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity\u2019s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity\u2019s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Classes of financial instruments [domain]; Financial assets; Derivatives [member]]"
       }
      }
     },
     "auth_ref": [
      "r161"
     ]
    },
    "ifrs-full_FinancialLiabilitiesAtFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialLiabilitiesAtFairValue",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandFairValuesofFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Financial liabilities, at fair value",
        "label": "Financial liabilities, at fair value"
       }
      },
      "en": {
       "role": {
        "documentation": "The fair value of financial liabilities. [Refer: At fair value [member]; Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r161"
     ]
    },
    "ifrs-full_FixedInterestRateMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FixedInterestRateMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandFairValuesofFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Fixed interest rate",
        "label": "Fixed interest rate [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a fixed interest rate. [Refer: Interest rate risk [member]]"
       }
      }
     },
     "auth_ref": [
      "r423"
     ]
    },
    "cnq_ForeignCurrencyTransactionLossGain1": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ForeignCurrencyTransactionLossGain1",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Realized foreign exchange on financing activities",
        "label": "Foreign Currency Transaction Loss (Gain)1",
        "documentation": "Foreign Currency Transaction Loss (Gain)1"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ForeignExchangeAdjustmentsAndOtherRightOfUseAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ForeignExchangeAdjustmentsAndOtherRightOfUseAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/LeasesLeaseAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Foreign exchange adjustments and other",
        "label": "Foreign Exchange Adjustments And Other, Right-Of-Use Assets",
        "documentation": "Foreign Exchange Adjustments And Other, Right-Of-Use Assets"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ForwardContractMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ForwardContractMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsForeignCurrencyExchangeRateRiskManagementNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Foreign currency forward contracts",
        "label": "Forward contract [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a contract between two parties for the purchase or sale of an underlying asset at a specified future date for a settlement price determined in advance."
       }
      }
     },
     "auth_ref": [
      "r433"
     ]
    },
    "cnq_ForwardPrices": {
     "xbrltype": "monetaryPerVolumeItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ForwardPrices",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Forward Prices",
        "label": "Forward Prices",
        "documentation": "Forward Prices"
       }
      }
     },
     "auth_ref": []
    },
    "srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails": {
       "parentTag": "srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Future cash inflows",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Future Cash Inflow",
        "documentation": "Amount of estimated future accumulated cash inflow for proved oil and gas reserves."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails": {
       "parentTag": "srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows",
       "weight": -1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Future income taxes",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Income Tax Expense",
        "documentation": "Amount of estimated future accumulated cash outflow for income tax expense for proved oil and gas reserves."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails": {
       "parentTag": "srt_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Future net cash flows",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Future Net Cash Flow, before Discount",
        "documentation": "Amount, before discount and after future accumulated cash outflow for development and production costs and future income tax expense, of estimated future accumulated cash inflow for proved oil and gas reserves."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails": {
       "parentTag": "srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Future production costs",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Production Cost",
        "documentation": "Amount of estimated future accumulated cash outflow for costs to be incurred in producing proved oil and gas reserves."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails": {
       "parentTag": "srt_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "10% annual discount for timing of future cash flows",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Discount",
        "documentation": "Amount of discount on estimated future accumulated cash inflow, after future accumulated cash outflow for development and production costs and future income tax expense, for proved oil and gas reserves, using discount rate of 10 percent per year."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "cnq_FutureNetCashFlowsRelatingtoProvedOilandGasReservesDevelopmentCostsandAssetRetirementObligations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "FutureNetCashFlowsRelatingtoProvedOilandGasReservesDevelopmentCostsandAssetRetirementObligations",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails": {
       "parentTag": "srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Future development costs and asset retirement obligations",
        "label": "Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Development Costs and Asset Retirement Obligations",
        "documentation": "Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Development Costs and Asset Retirement Obligations"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_GainLossOnChangeInFairValueOfSettledDerivatives": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "GainLossOnChangeInFairValueOfSettledDerivatives",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/FinancialInstrumentsNetGainLossfromRiskManagementActivitiesDetails": {
       "parentTag": "ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsNetGainLossfromRiskManagementActivitiesDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Net realized risk management (gain) loss",
        "negatedLabel": "Risk management loss (commodity derivatives)",
        "label": "Gain (Loss) On Change In Fair Value Of Settled Derivatives",
        "documentation": "Gain (Loss) On Change In Fair Value Of Settled Derivatives"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_GainLossOnChangeInFairValueOfUnsettledDerivatives": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "GainLossOnChangeInFairValueOfUnsettledDerivatives",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/FinancialInstrumentsNetGainLossfromRiskManagementActivitiesDetails": {
       "parentTag": "ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsNetGainLossfromRiskManagementActivitiesDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Net unrealized risk management loss (gain)",
        "label": "Gain (Loss) On Change In Fair Value Of Unsettled Derivatives",
        "documentation": "Gain (Loss) On Change In Fair Value Of Unsettled Derivatives"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_GainLossesOnChangeInFairValueOfUnsettledDerivativesIncludingFairValueMovementOfCommodityFinancialInstruments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "GainLossesOnChangeInFairValueOfUnsettledDerivativesIncludingFairValueMovementOfCommodityFinancialInstruments",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsEstimatedFairValuesofDerivativeFinancialInstrumentsIncludedinRiskManagementAssetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Risk management activities",
        "label": "Gain (Losses) On Change In Fair Value Of Unsettled Derivatives, Including Fair Value Movement Of Commodity Financial Instruments",
        "documentation": "Gain (Losses) On Change In Fair Value Of Unsettled Derivatives, Including Fair Value Movement Of Commodity Financial Instruments"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_GainOnDispositionOfAssetsAfterTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "GainOnDispositionOfAssetsAfterTax",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Gain on disposition of assets, after tax",
        "label": "Gain on Disposition of Assets, After Tax",
        "documentation": "Gain on Disposition of Assets, After Tax"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_GainsLossesOnAcquisitionsOfPropertyPlantAndEquipmentExplorationAndEvaluationAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "GainsLossesOnAcquisitionsOfPropertyPlantAndEquipmentExplorationAndEvaluationAssets",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": -1.0,
       "order": 11.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Gain on acquisitions, disposition, and remeasurement",
        "negatedTerseLabel": "Gain on acquisitions, disposition, and remeasurement",
        "label": "Gains (Losses) On Acquisitions, Of Property, Plant And Equipment, Exploration And Evaluation Assets",
        "documentation": "Gains (Losses) On Acquisitions, Of Property, Plant And Equipment, Exploration And Evaluation Assets"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GainsLossesOnCashFlowHedgesBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainsLossesOnCashFlowHedgesBeforeTax",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsEstimatedFairValuesofDerivativeFinancialInstrumentsIncludedinRiskManagementAssetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other comprehensive income",
        "label": "Gains (losses) on cash flow hedges, before tax"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) recognised in other comprehensive income on cash flow hedges, before tax, before reclassification adjustments. [Refer: Cash flow hedges [member]]"
       }
      }
     },
     "auth_ref": [
      "r335"
     ]
    },
    "ifrs-full_GainsLossesOnCashFlowHedgesNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainsLossesOnCashFlowHedgesNetOfTax",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncome": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeNetOfTaxCashFlowHedges",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Unrealized income, net of taxes of $2 million (2024 \u2013 $nil; 2023\u00a0\u2013\u00a0$nil)",
        "label": "Gains (losses) on cash flow hedges, net of tax"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) recognised in other comprehensive income on cash flow hedges, net of tax, before reclassification adjustments. [Refer: Cash flow hedges [member]]"
       }
      }
     },
     "auth_ref": [
      "r157",
      "r160",
      "r282",
      "r334"
     ]
    },
    "ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainsLossesOnChangeInFairValueOfDerivatives",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": -1.0,
       "order": 5.0
      },
      "http://www.cnrl.com/role/FinancialInstrumentsNetGainLossfromRiskManagementActivitiesDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/FinancialInstrumentsNetGainLossfromRiskManagementActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedLabel": "Risk management (gain) loss",
        "negatedTotalLabel": "Gains (loss) on change in fair value of derivatives",
        "label": "Gains (losses) on change in fair value of derivatives"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) resulting from change in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]]"
       }
      }
     },
     "auth_ref": [
      "r438"
     ]
    },
    "ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": -1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedLabel": "Foreign exchange (gain) loss",
        "negatedTerseLabel": "Foreign exchange (gain) loss",
        "label": "Foreign exchange gain (loss)"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of exchange differences recognised in profit or loss that arise from foreign currency transactions, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9. [Refer: At fair value [member]; Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r27",
      "r243",
      "r311"
     ]
    },
    "cnq_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLossSettledAndUnsettledDerivativeHedgingInstruments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLossSettledAndUnsettledDerivativeHedgingInstruments",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsEstimatedFairValuesofDerivativeFinancialInstrumentsIncludedinRiskManagementAssetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Foreign exchange",
        "label": "Gains (Losses) On Exchange Differences On Translation Recognised In Profit Or Loss, Settled And Unsettled Derivative Hedging Instruments",
        "documentation": "Gains (Losses) On Exchange Differences On Translation Recognised In Profit Or Loss, Settled And Unsettled Derivative Hedging Instruments"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/InvestmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "Gains on financial assets at fair value through profit or loss",
        "label": "Gains (losses) on financial assets at fair value through profit or loss"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) on financial assets at fair value through profit or loss. [Refer: Financial assets at fair value through profit or loss]"
       }
      }
     },
     "auth_ref": [
      "r152",
      "r279"
     ]
    },
    "cnq_GainsLossesOnInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "GainsLossesOnInvestments",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": -1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/InvestmentsDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Gain from investment",
        "terseLabel": "Gain on investment",
        "label": "Gains (Losses) On Investments",
        "documentation": "Gains (Losses) On Investments"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_GainsOnAcquisitionsOfPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "GainsOnAcquisitionsOfPropertyPlantAndEquipment",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Gains on acquisitions of property, plant and equipment, pre-tax",
        "label": "Gains On Acquisitions Of Property, Plant And Equipment",
        "documentation": "Gains On Acquisitions Of Property, Plant And Equipment"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GeographicalAreasAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GeographicalAreasAxis",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails",
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCostsIncurredinCrudeOilandNaturalGasActivitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Geographical areas [axis]",
        "label": "Geographical areas [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r190",
      "r339",
      "r358",
      "r362",
      "r378"
     ]
    },
    "ifrs-full_GeographicalAreasDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GeographicalAreasDomain",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails",
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCostsIncurredinCrudeOilandNaturalGasActivitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Geographical areas",
        "label": "Geographical areas [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated geographical areas. It also represents the standard value for the 'Geographical areas' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r190",
      "r339",
      "r358",
      "r362",
      "r378"
     ]
    },
    "cnq_GrandePrairieAcquisitionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "GrandePrairieAcquisitionMember",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Grande Prairie Acquisition",
        "label": "Grande Prairie Acquisition [Member]",
        "documentation": "Grande Prairie Acquisition"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_GrandePrairieAndPalliserBlockAcquisitionsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "GrandePrairieAndPalliserBlockAcquisitionsMember",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Grande Prairie and Palliser Block Acquisitions",
        "label": "Grande Prairie And Palliser Block Acquisitions [Member]",
        "documentation": "Grande Prairie And Palliser Block Acquisitions"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_GrandePrairieNGLsAndNaturalGasMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "GrandePrairieNGLsAndNaturalGasMember",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Grande Prairie NGLs and Natural Gas",
        "label": "Grande Prairie NGLs And Natural Gas [Member]",
        "documentation": "Grande Prairie NGLs And Natural Gas"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GrossCarryingAmountMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GrossCarryingAmountMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails",
      "http://www.cnrl.com/role/LongTermDebtScheduleofDebtRepaymentsDetails",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "Cost",
        "terseLabel": "Gross carrying amount",
        "label": "Gross carrying amount [member]"
       }
      }
     },
     "auth_ref": [
      "r10",
      "r56",
      "r60",
      "r63",
      "r145",
      "r166",
      "r168",
      "r235",
      "r257",
      "r260",
      "r263",
      "r287",
      "r288",
      "r367"
     ]
    },
    "ifrs-full_GrossProfit": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GrossProfit",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Results of operations",
        "label": "Gross profit"
       }
      }
     },
     "auth_ref": [
      "r385"
     ]
    },
    "cnq_HenryHubLouisianaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "HenryHubLouisianaMember",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Henry Hub",
        "label": "Henry Hub Louisiana [Member]",
        "documentation": "Henry Hub Louisiana [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "dei_IcfrAuditorAttestationFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "IcfrAuditorAttestationFlag",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "ICFR Auditor Attestation Flag",
        "label": "ICFR Auditor Attestation Flag"
       }
      }
     },
     "auth_ref": [
      "r396",
      "r397",
      "r398"
     ]
    },
    "ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IdentifiableAssetsAcquiredLiabilitiesAssumed",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/PropertyPlantandEquipmentSummaryofNetAssetsAcquiredDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentSummaryofNetAssetsAcquiredDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Net assets acquired",
        "totalLabel": "Net assets acquired",
        "label": "Identifiable assets acquired (liabilities assumed)"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount recognised as of the acquisition date for net identifiable assets acquired or liabilities assumed in a business combination. [Refer: Total for all business combinations [member]]"
       }
      }
     },
     "auth_ref": [
      "r364",
      "r365",
      "r381"
     ]
    },
    "cnq_ImpactOf1DecreaseInDiscountRateImpactOnAssetRetirementObligationLiability": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ImpactOf1DecreaseInDiscountRateImpactOnAssetRetirementObligationLiability",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesFutureCashOutflowRequiredtoSettleItsAssetRetirementObligationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Discount rate, 1% Decrease",
        "label": "Impact Of 1% Decrease In Discount Rate, Impact On Asset Retirement Obligation Liability",
        "documentation": "Impact Of 1% Decrease In Discount Rate, Impact On Asset Retirement Obligation Liability"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ImpactOf1DecreaseInInflationRateImpactOnAssetRetirementObligationLiability": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ImpactOf1DecreaseInInflationRateImpactOnAssetRetirementObligationLiability",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesFutureCashOutflowRequiredtoSettleItsAssetRetirementObligationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Inflation rate, 1% decrease",
        "label": "Impact Of 1% Decrease In Inflation Rate, Impact On Asset Retirement Obligation Liability",
        "documentation": "Impact Of 1% Decrease In Inflation Rate, Impact On Asset Retirement Obligation Liability"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ImpactOf1IncreaseInDiscountRateImpactOnAssetRetirementObligationLiability": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ImpactOf1IncreaseInDiscountRateImpactOnAssetRetirementObligationLiability",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesFutureCashOutflowRequiredtoSettleItsAssetRetirementObligationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Discount rate, 1% increase",
        "label": "Impact Of 1% Increase In Discount Rate, Impact On Asset Retirement Obligation Liability",
        "documentation": "Impact Of 1% Increase In Discount Rate, Impact On Asset Retirement Obligation Liability"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ImpactOf1IncreaseInInflationRateImpactOnAssetRetirementObligationLiability": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ImpactOf1IncreaseInInflationRateImpactOnAssetRetirementObligationLiability",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesFutureCashOutflowRequiredtoSettleItsAssetRetirementObligationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Inflation rate, 1% increase",
        "label": "Impact Of 1% Increase In Inflation Rate, Impact On Asset Retirement Obligation Liability",
        "documentation": "Impact Of 1% Increase In Inflation Rate, Impact On Asset Retirement Obligation Liability"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Impairment loss (reversal of impairment loss) recognised in profit or loss",
        "label": "Impairment loss (reversal of impairment loss) recognised in profit or loss"
       }
      }
     },
     "auth_ref": [
      "r215",
      "r337"
     ]
    },
    "ifrs-full_IncomeStatementAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncomeStatementAbstract",
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Profit or loss [abstract]",
        "label": "Profit or loss [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncomeTaxExpenseContinuingOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncomeTaxExpenseContinuingOperations",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      },
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails",
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Income tax",
        "label": "Tax expense (income)"
       }
      }
     },
     "auth_ref": [
      "r1",
      "r3",
      "r4",
      "r34",
      "r91",
      "r180",
      "r228",
      "r229",
      "r230",
      "r332"
     ]
    },
    "ifrs-full_IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncomeParenthetical"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Unrealized income, net of taxes",
        "label": "Income tax relating to cash flow hedges included in other comprehensive income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income tax relating to amounts recognised in other comprehensive income in relation to cash flow hedges. [Refer: Cash flow hedges [member]; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r2",
      "r333"
     ]
    },
    "cnq_IncomeTaxRelatingToReclassificationAdjustmentsOnCashFlowHedgesOfOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "IncomeTaxRelatingToReclassificationAdjustmentsOnCashFlowHedgesOfOtherComprehensiveIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncomeParenthetical"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Reclassification to net earnings, net of taxes",
        "label": "Income Tax Relating To Reclassification Adjustments On Cash Flow Hedges Of Other Comprehensive Income",
        "documentation": "Income Tax Relating To Reclassification Adjustments On Cash Flow Hedges Of Other Comprehensive Income"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_IncomeTaxesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "IncomeTaxesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Income Taxes [Abstract]",
        "label": "Income Taxes [Abstract]",
        "documentation": "Income Taxes [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncomeTaxesPaidRefund": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncomeTaxesPaidRefund",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Income taxes paid, net",
        "label": "Income taxes paid (refund)"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash flows from income taxes paid or refunded."
       }
      }
     },
     "auth_ref": [
      "r67"
     ]
    },
    "ifrs-full_IncreaseDecreaseInCashAndCashEquivalents": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInCashAndCashEquivalents",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Increase (decrease) in cash and cash equivalents",
        "label": "Increase (decrease) in cash and cash equivalents after effect of exchange rate changes"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in cash and cash equivalents after the effect of exchange rate changes on cash and cash equivalents held in foreign currencies. [Refer: Cash and cash equivalents; Effect of exchange rate changes on cash and cash equivalents]"
       }
      }
     },
     "auth_ref": [
      "r70",
      "r225"
     ]
    },
    "srt_IncreaseDecreaseInEstimatedFutureDevelopmentCosts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "IncreaseDecreaseInEstimatedFutureDevelopmentCosts",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails": {
       "parentTag": "srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Changes in estimated future development costs",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Estimated Future Development Cost, Increase (Decrease)",
        "documentation": "Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in estimated future development costs."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails": {
       "parentTag": "srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease",
       "weight": 1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Net change in income taxes",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Future Income Tax Expense (Benefit)",
        "documentation": "Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in the estimated future income tax on future pretax net cash flows related to the entity's proved oil and gas reserves."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_IncreaseDecreaseInStandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesRollForward": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "IncreaseDecreaseInStandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesRollForward",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Increase (Decrease) in Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves 1 [Roll Forward]",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow [Roll Forward]",
        "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseInWorkingCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInWorkingCapital",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTotalLabel": "Net changes in non-cash working capital",
        "label": "Increase (decrease) in working capital"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in working capital."
       }
      }
     },
     "auth_ref": [
      "r419"
     ]
    },
    "cnq_IncreaseDecreaseInWorkingCapitalInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "IncreaseDecreaseInWorkingCapitalInvestingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": -1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows",
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Net change in non-cash working capital",
        "negatedLabel": "Investing activities",
        "label": "Increase (Decrease) In Working Capital, Investing Activities",
        "documentation": "Increase (Decrease) In Working Capital, Investing Activities"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_IncreaseDecreaseInWorkingCapitalOperatingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "IncreaseDecreaseInWorkingCapitalOperatingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows",
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Net change in non-cash working capital",
        "negatedLabel": "Operating activities",
        "label": "Increase (Decrease) In Working Capital, Operating Activities",
        "documentation": "Increase (Decrease) In Working Capital, Operating Activities"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughBusinessCombinationsDeferredTaxLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughBusinessCombinationsDeferredTaxLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesSummaryofNetDeferredIncomeTaxLiabilityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Acquisitions",
        "label": "Increase (decrease) through business combinations, deferred tax liability (asset)"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in deferred tax liability (asset) resulting from business combinations. [Refer: Deferred tax liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r403"
     ]
    },
    "cnq_IncreaseDecreaseThroughChangeInCostInflationAndTimingEstimates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "IncreaseDecreaseThroughChangeInCostInflationAndTimingEstimates",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Revision of cost, inflation and timing estimates",
        "label": "Increase (Decrease) Through Change In Cost Inflation and Timing Estimates",
        "documentation": "Increase (Decrease) Through Change In Cost Inflation and Timing Estimates"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughChangeInDiscountRateOtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughChangeInDiscountRateOtherProvisions",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Change in discount rates",
        "label": "Increase (decrease) through change in discount rate, other provisions"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in other provisions resulting from a change in discount rate. [Refer: Other provisions]"
       }
      }
     },
     "auth_ref": [
      "r52",
      "r254"
     ]
    },
    "cnq_IncreaseDecreaseThroughExerciseOfOptionsAdditionalValueReceivedInExcessOfCash": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "IncreaseDecreaseThroughExerciseOfOptionsAdditionalValueReceivedInExcessOfCash",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofChangesinEquity",
      "http://www.cnrl.com/role/ShareCapitalOutstandingCommonSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Previously recognized liability on stock options exercised \u200dfor common shares",
        "label": "Increase (Decrease) Through Exercise Of Options, Additional Value Received In Excess Of Cash",
        "documentation": "Increase (Decrease) Through Exercise Of Options, Additional Value Received In Excess Of Cash"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_IncreaseDecreaseThroughExerciseOfOptionsCashReceived": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "IncreaseDecreaseThroughExerciseOfOptionsCashReceived",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofChangesinEquity",
      "http://www.cnrl.com/role/ShareCapitalOutstandingCommonSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Issued upon exercise of stock options",
        "label": "Increase (Decrease) Through Exercise Of Options, Cash Received",
        "documentation": "Increase (Decrease) Through Exercise Of Options, Cash Received"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesSummaryofNetDeferredIncomeTaxLiabilityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Foreign exchange adjustments",
        "label": "Increase (decrease) through net exchange differences, deferred tax liability (asset)"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in deferred tax liability (asset) resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Deferred tax liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r403"
     ]
    },
    "cnq_IncreaseDecreaseThroughNetExchangeDifferencesExplorationForAndEvaluationOfMineralResources": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "IncreaseDecreaseThroughNetExchangeDifferencesExplorationForAndEvaluationOfMineralResources",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/ExplorationandEvaluationAssetsDetailedInformationaboutExplorationandEvaluationAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Foreign exchange adjustments",
        "label": "Increase (Decrease) Through Net Exchange Differences, Exploration For And Evaluation Of Mineral Resources",
        "documentation": "Increase (Decrease) Through Net Exchange Differences, Exploration For And Evaluation Of Mineral Resources"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesOtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughNetExchangeDifferencesOtherProvisions",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Foreign exchange adjustments",
        "label": "Increase (decrease) through net exchange differences, other provisions"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: Other provisions]"
       }
      }
     },
     "auth_ref": [
      "r411"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Foreign exchange adjustments and other",
        "label": "Increase (decrease) through net exchange differences, property, plant and equipment"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in property, plant and equipment resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r15"
     ]
    },
    "cnq_IncreaseDecreaseThroughOtherChangesLeaseDerecognitions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "IncreaseDecreaseThroughOtherChangesLeaseDerecognitions",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationLiabilitiesArisingfromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Lease derecognitions",
        "label": "Increase (decrease) through other changes, Lease Derecognitions",
        "documentation": "Increase (decrease) through other changes, Lease Derecognitions"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughOtherChangesLiabilitiesArisingFromFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughOtherChangesLiabilitiesArisingFromFinancingActivities",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationLiabilitiesArisingfromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Changes in foreign exchange and fair value",
        "label": "Increase (decrease) through other changes, liabilities arising from financing activities"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in liabilities arising from financing activities resulting from changes that the entity does not separately disclose in the same statement or note. [Refer: Liabilities arising from financing activities]"
       }
      }
     },
     "auth_ref": [
      "r68",
      "r222"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughTimeValueOfMoneyAdjustmentOtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughTimeValueOfMoneyAdjustmentOtherProvisions",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Asset retirement obligation accretion",
        "label": "Increase through adjustments arising from passage of time, other provisions"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase in other provisions through adjustments arising from the passage of time. [Refer: Other provisions]"
       }
      }
     },
     "auth_ref": [
      "r52",
      "r254"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughTransfersPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughTransfersPropertyPlantAndEquipment",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Transfers from exploration and evaluation assets",
        "label": "Increase (decrease) through transfers, property, plant and equipment"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in property, plant and equipment resulting from transfers. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r406"
     ]
    },
    "cnq_IncreaseDecreaseThroughTransfersToPropertyPlantAndEquipmentExplorationForAndEvaluationOfMineralResources": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "IncreaseDecreaseThroughTransfersToPropertyPlantAndEquipmentExplorationForAndEvaluationOfMineralResources",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/ExplorationandEvaluationAssetsDetailedInformationaboutExplorationandEvaluationAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Transfers to property, plant and equipment",
        "label": "Increase (Decrease) Through Transfers To Property, Plant And Equipment, Exploration For And Evaluation Of Mineral Resources",
        "documentation": "Increase (Decrease) Through Transfers To Property, Plant And Equipment, Exploration For And Evaluation Of Mineral Resources"
       }
      }
     },
     "auth_ref": []
    },
    "srt_IncreaseDueToPurchasesOfMineralsInPlace": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "IncreaseDueToPurchasesOfMineralsInPlace",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails": {
       "parentTag": "srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Purchases of proved reserves in place",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Purchase of Mineral in Place",
        "documentation": "Amount of increase in standardized measure of discounted future net cash flow as a result of purchases of minerals in place."
       }
      }
     },
     "auth_ref": [
      "r401"
     ]
    },
    "cnq_IncreaseInCommittedCapacity": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "IncreaseInCommittedCapacity",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Increase in committed capacity",
        "label": "Increase In Committed Capacity",
        "documentation": "Increase In Committed Capacity"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_IncreaseThroughCapitalizationOfShortTermLeasesPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "IncreaseThroughCapitalizationOfShortTermLeasesPropertyPlantAndEquipment",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/LeasesScheduleofLeaseLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Increase through capitalization of short-term leases, property, plant and equipment",
        "label": "Increase Through Capitalization Of Short-Term Leases, Property, Plant And Equipment",
        "documentation": "Increase Through Capitalization Of Short-Term Leases, Property, Plant And Equipment"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseThroughNewLeasesLiabilitiesArisingFromFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseThroughNewLeasesLiabilitiesArisingFromFinancingActivities",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationLiabilitiesArisingfromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Lease additions",
        "label": "Increase through new leases, liabilities arising from financing activities"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase in liabilities arising from financing activities resulting from new leases. [Refer: Liabilities arising from financing activities]"
       }
      }
     },
     "auth_ref": [
      "r348",
      "r352"
     ]
    },
    "cnq_InflationRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "InflationRate",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Inflation rate",
        "label": "Inflation Rate",
        "documentation": "Inflation Rate"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_InterestExpenseDepletionDepreciationAndAmortizationOfCombinedEntityAsIfCombinationOccurredAtBeginningOfPeriod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "InterestExpenseDepletionDepreciationAndAmortizationOfCombinedEntityAsIfCombinationOccurredAtBeginningOfPeriod",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Interest expense, depletion, depreciation and amortization",
        "label": "Interest Expense, Depletion, Depreciation And Amortization Of Combined Entity As If Combination Occurred At Beginning Of Period",
        "documentation": "Interest Expense, Depletion, Depreciation And Amortization Of Combined Entity As If Combination Occurred At Beginning Of Period"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InterestExpenseOnBorrowings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InterestExpenseOnBorrowings",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/InterestandOtherFinancingExpenseDetails": {
       "parentTag": "ifrs-full_FinanceCosts",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/InterestandOtherFinancingExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Interest expense on long-term debt",
        "label": "Interest expense on borrowings"
       }
      }
     },
     "auth_ref": [
      "r433"
     ]
    },
    "ifrs-full_InterestExpenseOnLeaseLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InterestExpenseOnLeaseLiabilities",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/InterestandOtherFinancingExpenseDetails": {
       "parentTag": "ifrs-full_FinanceCosts",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/InterestandOtherFinancingExpenseDetails",
      "http://www.cnrl.com/role/LeasesScheduleofLeaseLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Interest expense on lease liabilities",
        "verboseLabel": "Interest expense on lease liabilities",
        "label": "Interest expense on lease liabilities"
       }
      }
     },
     "auth_ref": [
      "r105",
      "r201"
     ]
    },
    "cnq_InterestPaidReceivedNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "InterestPaidReceivedNet",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Interest paid on long-term debt",
        "label": "Interest Paid (Received), Net",
        "documentation": "Interest Paid (Received), Net"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InterestRateRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InterestRateRiskMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsFinancialInstrumentSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Interest rate risk",
        "label": "Interest rate risk [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the type of risk that the fair value or future cash flows of a financial instrument will fluctuate because of changes in market interest rates. [Refer: Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r120",
      "r121",
      "r122",
      "r123",
      "r176"
     ]
    },
    "ifrs-full_IntrinsicValueOfLiabilitiesFromSharebasedPaymentTransactionsForWhichCounterpartysRightToCashOrOtherAssetsVested2011": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IntrinsicValueOfLiabilitiesFromSharebasedPaymentTransactionsForWhichCounterpartysRightToCashOrOtherAssetsVested2011",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Intrinsic value of vested stock options",
        "label": "Intrinsic value of liabilities from share-based payment transactions for which counterparty's right to cash or other assets vested"
       }
      },
      "en": {
       "role": {
        "documentation": "The intrinsic value of liabilities arising from share-based transactions for which the counterparty's right to cash or other assets had vested by the end of the period (for example, vested share appreciation rights). The intrinsic value is the difference between the fair value of the shares to which the counterparty has the (conditional or unconditional) right to subscribe, or which it has the right to receive, and the price (if any) that the counterparty is (or will be) required to pay for those shares. Share-based payment transactions are transactions in which the entity: (a) receives goods or services from the supplier of those goods or services (including an employee) in a share-based payment arrangement; or (b) incurs an obligation to settle the transaction with the supplier in a share-based payment arrangement when another group entity receives those goods or services, for which the counterparty's right to cash or other assets had vested by the end of the period (for example, vested share appreciation rights)."
       }
      }
     },
     "auth_ref": [
      "r138"
     ]
    },
    "ifrs-full_Inventories": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Inventories",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_CurrentAssets",
       "weight": 1.0,
       "order": 3.0
      },
      "http://www.cnrl.com/role/InventoryScheduleofInventoryDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets",
      "http://www.cnrl.com/role/InventoryScheduleofInventoryDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Inventory",
        "totalLabel": "Total inventory",
        "label": "Current inventories"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current inventories. [Refer: Inventories]"
       }
      }
     },
     "auth_ref": [
      "r23",
      "r220",
      "r313",
      "r387"
     ]
    },
    "cnq_InventoriesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "InventoriesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Inventories [Abstract]",
        "label": "Inventories [Abstract]",
        "documentation": "Inventories [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_InvestmentNameAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "InvestmentNameAxis",
     "presentation": [
      "http://www.cnrl.com/role/InvestmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Investment, Name [Axis]",
        "label": "Investment, Name [Axis]",
        "documentation": "Investment, Name [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_InvestmentNameDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "InvestmentNameDomain",
     "presentation": [
      "http://www.cnrl.com/role/InvestmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Investment, Name [Domain]",
        "label": "Investment, Name [Domain]",
        "documentation": "[Domain] for Investment, Name [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_InvestmentsAccountedForUsingEquityMethodRelatedTemporaryDifferencesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "InvestmentsAccountedForUsingEquityMethodRelatedTemporaryDifferencesMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMovementsinDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Investment in North West Redwater Partnership",
        "label": "Investments Accounted For Using Equity Method Related Temporary Differences [Member]",
        "documentation": "Investments Accounted For Using Equity Method Related Temporary Differences [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InvestmentsInJointVentures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InvestmentsInJointVentures",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Investments in joint ventures",
        "label": "Investments in joint ventures reported in separate financial statements"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of investments in joint ventures in an entity's separate financial statements. [Refer: Total for all joint ventures [member]]"
       }
      }
     },
     "auth_ref": [
      "r35"
     ]
    },
    "cnq_InvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodRelatedTemporaryDifferencesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "InvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodRelatedTemporaryDifferencesMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMovementsinDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Investments",
        "label": "Investments Other Than Investments Accounted For Using Equity Method Related Temporary Differences [Member]",
        "documentation": "Investments Other Than Investments Accounted For Using Equity Method Related Temporary Differences [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_IssuanceOfOtherLongTermBorrowingsClassifiedAsFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "IssuanceOfOtherLongTermBorrowingsClassifiedAsFinancingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows",
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationLiabilitiesArisingfromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Issuance of other long-term debt",
        "label": "Issuance Of Other Long-Term Borrowings, Classified As Financing Activities",
        "documentation": "Issuance Of Other Long-Term Borrowings, Classified As Financing Activities"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_IssuanceRepaymentsOfLineOfCreditBorrowingsClassifiedAsFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "IssuanceRepaymentsOfLineOfCreditBorrowingsClassifiedAsFinancingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows",
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails",
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationLiabilitiesArisingfromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "(Repayment) issuance of bank credit facilities and commercial paper,\u2009net",
        "negatedLabel": "(Repayment) issuance of bank credit facilities and commercial paper,\u2009net",
        "label": "Issuance (Repayments) Of Line Of Credit Borrowings, Classified As Financing Activities",
        "documentation": "Issuance (Repayments) Of Line Of Credit Borrowings, Classified As Financing Activities"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IssuedCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IssuedCapital",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_Equity",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Share capital",
        "label": "Issued capital"
       }
      },
      "en": {
       "role": {
        "documentation": "The nominal value of capital issued."
       }
      }
     },
     "auth_ref": [
      "r383",
      "r390"
     ]
    },
    "ifrs-full_IssuedCapitalMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IssuedCapitalMember",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofChangesinEquity",
      "http://www.cnrl.com/role/ShareCapitalOutstandingCommonSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Share capital",
        "label": "Issued capital [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a component of equity representing issued capital."
       }
      }
     },
     "auth_ref": [
      "r304"
     ]
    },
    "cnq_JKMPriceMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "JKMPriceMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsPriceandDiscountRateSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "JKM price",
        "label": "JKM Price [Member]",
        "documentation": "JKM Price"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_JointVentureOutputCapacityBarrelsOfBitumenFeedstockProcessedPerDay": {
     "xbrltype": "volumeItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "JointVentureOutputCapacityBarrelsOfBitumenFeedstockProcessedPerDay",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Barrels of bitumen feedstock processed per day output capacity (approximately)",
        "label": "Joint Venture, Output Capacity, Barrels Of Bitumen Feedstock Processed Per Day",
        "documentation": "Joint Venture, Output Capacity, Barrels Of Bitumen Feedstock Processed Per Day"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_JointVentureProcessingAgreementBarrelsOfBitumenFeedstockProcessedPerDay": {
     "xbrltype": "volumeItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "JointVentureProcessingAgreementBarrelsOfBitumenFeedstockProcessedPerDay",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Barrels of bitumen feedstock processed per day",
        "label": "Joint Venture, Processing Agreement, Barrels Of Bitumen Feedstock Processed Per Day",
        "documentation": "Joint Venture, Processing Agreement, Barrels Of Bitumen Feedstock Processed Per Day"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_JointVentureProcessingAgreementBarrelsOfBitumenFeedstockProcessedPerDayPortionRelatedToCompany": {
     "xbrltype": "volumeItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "JointVentureProcessingAgreementBarrelsOfBitumenFeedstockProcessedPerDayPortionRelatedToCompany",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Processing agreement, barrels of bitumen feedstock per date for the Company",
        "label": "Joint Venture, Processing Agreement, Barrels Of Bitumen Feedstock Processed Per Day, Portion Related To Company",
        "documentation": "Joint Venture, Processing Agreement, Barrels Of Bitumen Feedstock Processed Per Day, Portion Related To Company"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_JointVentureProcessingAgreementBarrelsOfBitumenFeedstockProcessedPerDayPortionRelatedToOthers": {
     "xbrltype": "volumeItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "JointVentureProcessingAgreementBarrelsOfBitumenFeedstockProcessedPerDayPortionRelatedToOthers",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Processing agreement, barrels of bitumen feedstock per date for others",
        "label": "Joint Venture, Processing Agreement, Barrels Of Bitumen Feedstock Processed Per Day, Portion Related To Others",
        "documentation": "Joint Venture, Processing Agreement, Barrels Of Bitumen Feedstock Processed Per Day, Portion Related To Others"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_JointVenturesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "JointVenturesAxis",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofAssetsLiabilitiesPartnersEquityandEquityLossIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Joint ventures [axis]",
        "label": "Joint ventures [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r37",
      "r39",
      "r93",
      "r291"
     ]
    },
    "ifrs-full_JointVenturesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "JointVenturesDomain",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofAssetsLiabilitiesPartnersEquityandEquityLossIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Joint ventures [domain]",
        "label": "Joint ventures [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Joint ventures' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r37",
      "r39",
      "r93",
      "r291"
     ]
    },
    "ifrs-full_KeyManagementPersonnelCompensation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "KeyManagementPersonnelCompensation",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagementDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Total",
        "label": "Key management personnel compensation"
       }
      }
     },
     "auth_ref": [
      "r30",
      "r245"
     ]
    },
    "cnq_KeyManagementPersonnelCompensationAnnualIncentivePlans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "KeyManagementPersonnelCompensationAnnualIncentivePlans",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagementDetails": {
       "parentTag": "ifrs-full_KeyManagementPersonnelCompensation",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Annual incentive plans",
        "label": "Key Management Personnel Compensation, Annual Incentive Plans",
        "documentation": "Key Management Personnel Compensation, Annual Incentive Plans"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_KeyManagementPersonnelCompensationLongTermShareBasedPayment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "KeyManagementPersonnelCompensationLongTermShareBasedPayment",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagementDetails": {
       "parentTag": "ifrs-full_KeyManagementPersonnelCompensation",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Long-term incentive plans",
        "label": "Key Management Personnel Compensation, Long-Term Share-Based Payment",
        "documentation": "Key Management Personnel Compensation, Long-Term Share-Based Payment"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_KeyManagementPersonnelCompensationOptionsIssued": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "KeyManagementPersonnelCompensationOptionsIssued",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagementDetails": {
       "parentTag": "ifrs-full_KeyManagementPersonnelCompensation",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Common stock option based awards",
        "label": "Key Management Personnel Compensation, Options Issued",
        "documentation": "Key Management Personnel Compensation, Options Issued"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "KeyManagementPersonnelCompensationShorttermEmployeeBenefits",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagementDetails": {
       "parentTag": "ifrs-full_KeyManagementPersonnelCompensation",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Fees earned and salary",
        "label": "Key management personnel compensation, short-term employee benefits"
       }
      }
     },
     "auth_ref": [
      "r29"
     ]
    },
    "cnq_KeyManagementPersonnelOfEntityOrParentNonManagementDirectorMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "KeyManagementPersonnelOfEntityOrParentNonManagementDirectorMember",
     "presentation": [
      "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Non-management directors",
        "label": "Key Management Personnel Of Entity Or Parent, Non-Management Director [Member]",
        "documentation": "Key Management Personnel Of Entity Or Parent, Non-Management Director [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_KeyManagementPersonnelOfEntityOrParentSeniorManagementMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "KeyManagementPersonnelOfEntityOrParentSeniorManagementMember",
     "presentation": [
      "http://www.cnrl.com/role/RemunerationofDirectorsandSeniorManagementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Senior management",
        "label": "Key Management Personnel Of Entity Or Parent, Senior Management [Member]",
        "documentation": "Key Management Personnel Of Entity Or Parent, Senior Management [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LaterThanFiveYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanFiveYearsMember",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails",
      "http://www.cnrl.com/role/LongTermDebtScheduleofDebtRepaymentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Thereafter",
        "label": "Later than five years [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than five years."
       }
      }
     },
     "auth_ref": [
      "r113",
      "r114",
      "r125",
      "r210",
      "r213",
      "r368",
      "r369",
      "r372"
     ]
    },
    "ifrs-full_LaterThanFourYearsAndNotLaterThanFiveYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanFourYearsAndNotLaterThanFiveYearsMember",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails",
      "http://www.cnrl.com/role/LongTermDebtScheduleofDebtRepaymentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "2030",
        "label": "Later than four years and not later than five years [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than four years and not later than five years."
       }
      }
     },
     "auth_ref": [
      "r113",
      "r114",
      "r125",
      "r368",
      "r372",
      "r433"
     ]
    },
    "ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanOneYearAndNotLaterThanTwoYearsMember",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails",
      "http://www.cnrl.com/role/LongTermDebtScheduleofDebtRepaymentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "2027",
        "terseLabel": "1 to less than 2 years",
        "label": "Later than one year and not later than two years [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than one year and not later than two years."
       }
      }
     },
     "auth_ref": [
      "r113",
      "r114",
      "r125",
      "r368",
      "r372",
      "r433"
     ]
    },
    "ifrs-full_LaterThanThreeYearsAndNotLaterThanFourYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanThreeYearsAndNotLaterThanFourYearsMember",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails",
      "http://www.cnrl.com/role/LongTermDebtScheduleofDebtRepaymentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "2029",
        "label": "Later than three years and not later than four years [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than three years and not later than four years."
       }
      }
     },
     "auth_ref": [
      "r113",
      "r114",
      "r125",
      "r368",
      "r372",
      "r433"
     ]
    },
    "ifrs-full_LaterThanTwoYearsAndNotLaterThanFiveYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanTwoYearsAndNotLaterThanFiveYearsMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "2 to less than 5 years",
        "label": "Later than two years and not later than five years [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than two years and not later than five years."
       }
      }
     },
     "auth_ref": [
      "r433"
     ]
    },
    "ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanTwoYearsAndNotLaterThanThreeYearsMember",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails",
      "http://www.cnrl.com/role/LongTermDebtScheduleofDebtRepaymentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "2028",
        "label": "Later than two years and not later than three years [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than two years and not later than three years."
       }
      }
     },
     "auth_ref": [
      "r113",
      "r114",
      "r125",
      "r368",
      "r372",
      "r433"
     ]
    },
    "cnq_LeaseAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LeaseAssetsMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMovementsinDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "Lease assets",
        "label": "Lease Assets [Member]",
        "documentation": "Lease Assets [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LeaseAssetsRecognisedAsOfAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LeaseAssetsRecognisedAsOfAcquisitionDate",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Lease assets, net assets acquired",
        "label": "Lease Assets Recognised As Of Acquisition Date",
        "documentation": "Lease Assets Recognised As Of Acquisition Date"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LeaseLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LeaseLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 6.0
      },
      "http://www.cnrl.com/role/LeasesScheduleofLeasesImpactonNetEarningsandCashFlowDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/LeasesScheduleofLeasesImpactonNetEarningsandCashFlowDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Lease liabilities",
        "terseLabel": "Lease liabilities",
        "label": "Lease liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration."
       }
      }
     },
     "auth_ref": [
      "r103"
     ]
    },
    "ifrs-full_LeaseLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LeaseLiabilitiesAbstract",
     "presentation": [
      "http://www.cnrl.com/role/LeasesScheduleofLeaseLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Lease liabilities [abstract]",
        "label": "Lease liabilities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LeaseLiabilitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LeaseLiabilitiesMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMovementsinDeferredTaxAssetsandLiabilitiesDetails",
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationLiabilitiesArisingfromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Lease liabilities",
        "label": "Lease liabilities [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for lease liabilities. [Refer: Lease liabilities]"
       }
      }
     },
     "auth_ref": [
      "r349",
      "r353"
     ]
    },
    "cnq_LeaseLiabilitiesRecognisedAsOfAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LeaseLiabilitiesRecognisedAsOfAcquisitionDate",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Lease liabilities, net assets acquired",
        "label": "Lease Liabilities Recognised As Of Acquisition Date",
        "documentation": "Lease Liabilities Recognised As Of Acquisition Date"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LeasePaymentsIncludedInLiablities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LeasePaymentsIncludedInLiablities",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Lease payments included In liablities",
        "label": "Lease Payments Included In Liablities",
        "documentation": "Lease Payments Included In Liablities"
       }
      }
     },
     "auth_ref": []
    },
    "dei_LegalEntityAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "LegalEntityAxis",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofAssetsLiabilitiesPartnersEquityandEquityLossIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Legal Entity [Axis]",
        "label": "Legal Entity [Axis]",
        "documentation": "The set of legal entities associated with a report."
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LettersOfCreditAndGuaranteesOutstandingAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LettersOfCreditAndGuaranteesOutstandingAmount",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Letters of credit and guarantees outstanding",
        "label": "Letters Of Credit And Guarantees Outstanding, Amount",
        "documentation": "Letters Of Credit And Guarantees Outstanding, Amount"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_Level1OfFairValueHierarchyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Level1OfFairValueHierarchyMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandFairValuesofFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Level 1",
        "label": "Level 1 of fair value hierarchy [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a category of the fair value hierarchy where inputs to the valuation techniques are quoted prices (unadjusted) in active markets for identical assets or liabilities that the entity can access at the measurement date."
       }
      }
     },
     "auth_ref": [
      "r21",
      "r46",
      "r49",
      "r95",
      "r251",
      "r293"
     ]
    },
    "ifrs-full_Level3OfFairValueHierarchyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Level3OfFairValueHierarchyMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Level 3",
        "label": "Level 3 of fair value hierarchy [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a category of the fair value hierarchy where inputs to the valuation techniques are unobservable inputs for the asset or liability. Unobservable inputs are inputs for which market data are not available and that are developed using the best information available about the assumptions that the market participants would use when pricing the asset or liability."
       }
      }
     },
     "auth_ref": [
      "r46",
      "r49",
      "r95",
      "r251",
      "r293"
     ]
    },
    "ifrs-full_LevelsOfFairValueHierarchyAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LevelsOfFairValueHierarchyAxis",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandFairValuesofFinancialInstrumentsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Levels of fair value hierarchy [axis]",
        "label": "Levels of fair value hierarchy [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r21",
      "r95",
      "r293"
     ]
    },
    "ifrs-full_LevelsOfFairValueHierarchyDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LevelsOfFairValueHierarchyDomain",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandFairValuesofFinancialInstrumentsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Levels of fair value hierarchy [domain]",
        "label": "Levels of fair value hierarchy [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all levels of the fair value hierarchy. It also represents the standard value for the 'Levels of fair value hierarchy' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r21",
      "r95",
      "r293"
     ]
    },
    "ifrs-full_Liabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Liabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_EquityAndLiabilities",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Liabilities",
        "label": "Liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of a present obligation of the entity to transfer an economic resource as a result of past events. Economic resource is a right that has the potential to produce economic benefits."
       }
      }
     },
     "auth_ref": [
      "r94",
      "r95",
      "r97",
      "r181",
      "r185",
      "r292",
      "r293",
      "r317"
     ]
    },
    "ifrs-full_LiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LiabilitiesAbstract",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "LIABILITIES",
        "label": "Liabilities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LiabilitiesArisingFromFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LiabilitiesArisingFromFinancingActivities",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationLiabilitiesArisingfromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "periodStartLabel": "Liabilities arising from financing activities, beginning balance",
        "periodEndLabel": "Liabilities arising from financing activities, ending balance",
        "label": "Liabilities arising from financing activities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities for which cash flows were, or future cash flows will be, classified in the statement of cash flows as cash flows from financing activities. [Refer: Cash flows from (used in) financing activities; Liabilities]"
       }
      }
     },
     "auth_ref": [
      "r223",
      "r350"
     ]
    },
    "ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LiabilitiesArisingFromFinancingActivitiesAxis",
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationLiabilitiesArisingfromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Liabilities arising from financing activities [axis]",
        "label": "Liabilities arising from financing activities [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r223",
      "r350"
     ]
    },
    "ifrs-full_LiabilitiesArisingFromFinancingActivitiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LiabilitiesArisingFromFinancingActivitiesDomain",
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationLiabilitiesArisingfromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Liabilities arising from financing activities [domain]",
        "label": "Liabilities arising from financing activities [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for liabilities arising from financing activities. It also represents the standard value for the 'Liabilities arising from financing activities' axis if no other member is used. [Refer: Liabilities arising from financing activities]"
       }
      }
     },
     "auth_ref": [
      "r223",
      "r350"
     ]
    },
    "cnq_LiabilitiesFromShareBasedPaymentTransactionsTransferredToCommonSharesThroughExerciseOfOptions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LiabilitiesFromShareBasedPaymentTransactionsTransferredToCommonSharesThroughExerciseOfOptions",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesShareBasedCompensationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Transferred to common shares",
        "label": "Liabilities From Share-Based Payment Transactions, Transferred To Common Shares Through Exercise Of Options",
        "documentation": "Liabilities From Share-Based Payment Transactions, Transferred To Common Shares Through Exercise Of Options"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LiabilitiesFromSharebasedPaymentTransactions2011": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LiabilitiesFromSharebasedPaymentTransactions2011",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesShareBasedCompensationDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesNarrativeDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesShareBasedCompensationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Share-based compensation",
        "periodStartLabel": "Balance \u2013 beginning of year",
        "periodEndLabel": "Balance \u2013 end of year",
        "totalLabel": "Liabilities from share-based payment transactions",
        "label": "Liabilities from share-based payment transactions"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities arising from share-based payment transactions. Share-based payment transactions are transactions in which the entity: (a) receives goods or services from the supplier of those goods or services (including an employee) in a share-based payment arrangement; or (b) incurs an obligation to settle the transaction with the supplier in a share-based payment arrangement when another group entity receives those goods or services. [Refer: Types of share-based payment arrangements [domain]]"
       }
      }
     },
     "auth_ref": [
      "r137",
      "r274"
     ]
    },
    "cnq_LineOfCreditFacilityMaximumBorrowingCapacity1": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LineOfCreditFacilityMaximumBorrowingCapacity1",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Maximum credit facility",
        "label": "Line Of Credit Facility, Maximum Borrowing Capacity1",
        "documentation": "Line Of Credit Facility, Maximum Borrowing Capacity1"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LineOfCreditFacilityReductionInMaximumBorrowingCapacity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LineOfCreditFacilityReductionInMaximumBorrowingCapacity",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Reduction in maximum borrowing capacity",
        "label": "Line Of Credit Facility, Reduction In Maximum Borrowing Capacity",
        "documentation": "Line Of Credit Facility, Reduction In Maximum Borrowing Capacity"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LiquidityRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LiquidityRiskMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Liquidity risk",
        "label": "Liquidity risk [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the risk that an entity will encounter difficulty in meeting obligations associated with financial liabilities that are settled by delivering cash or another financial asset. [Refer: Financial assets; Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r120",
      "r121",
      "r122",
      "r366"
     ]
    },
    "dei_LocalPhoneNumber": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "LocalPhoneNumber",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Local Phone Number",
        "label": "Local Phone Number",
        "documentation": "Local phone number for entity."
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LongTermBorrowingsExpiringSeptemberTwoThousandTwentySevenMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LongTermBorrowingsExpiringSeptemberTwoThousandTwentySevenMember",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Long-Term Borrowings Expiring September 2027",
        "label": "Long-Term Borrowings Expiring September Two Thousand Twenty Seven [Member]",
        "documentation": "Long-Term Borrowings Expiring September Two Thousand Twenty Seven"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LongTermBorrowingsFivePointEightFivePercentDueFebruary2035Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LongTermBorrowingsFivePointEightFivePercentDueFebruary2035Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "5.85% due February 1, 2035 (US$350 million)",
        "label": "Long-Term Borrowings - Five Point Eight Five Percent Due February 2035 [Member]",
        "documentation": ""
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LongTermBorrowingsFivePointFourZeroPercentDueDecember2034Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LongTermBorrowingsFivePointFourZeroPercentDueDecember2034Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "5.40% due December 15, 2034 (US$750 million)",
        "verboseLabel": "5.40% due on December 2034",
        "label": "Long-Term Borrowings - Five Point Four Zero Percent Due December 2034 [Member]",
        "documentation": ""
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LongTermBorrowingsFivePointZeroZeroPercentDueDecember2029Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LongTermBorrowingsFivePointZeroZeroPercentDueDecember2029Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "5.00% due December 15, 2029 (US$750 million)",
        "verboseLabel": "5.00% due on December 2029",
        "label": "Long-Term Borrowings - Five Point Zero Zero Percent Due December 2029 [Member]",
        "documentation": ""
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LongTermBorrowingsFourPointNineFivePercentDueJune2047Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LongTermBorrowingsFourPointNineFivePercentDueJune2047Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "4.95% due June 1, 2047 (US$750 million)",
        "label": "Long-Term Borrowings - Four Point Nine Five Percent Due June 2047 [Member]",
        "documentation": ""
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LongTermBorrowingsIncludingCurrentPortionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LongTermBorrowingsIncludingCurrentPortionMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandFairValuesofFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "Fixed rate long-term debt",
        "label": "Long-Term Borrowings, Including Current Portion [Member]",
        "documentation": "Long-Term Borrowings, Including Current Portion [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LongTermBorrowingsSevenPointTwoZeroPercentDueJanuary2032Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LongTermBorrowingsSevenPointTwoZeroPercentDueJanuary2032Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "7.20% due January 15, 2032 (US$400 million)",
        "label": "Long-Term Borrowings - Seven Point Two Zero Percent Due January 2032 [Member]",
        "documentation": ""
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LongTermBorrowingsSixPointFiveZeroPercentDueFebruary2037Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LongTermBorrowingsSixPointFiveZeroPercentDueFebruary2037Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "6.50% due February 15, 2037 (US$450 million)",
        "label": "Long-Term Borrowings - Six Point Five Zero Percent Due February 2037 [Member]",
        "documentation": ""
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LongTermBorrowingsSixPointFourFivePercentDueJune2033Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LongTermBorrowingsSixPointFourFivePercentDueJune2033Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "6.45% due June 30, 2033 (US$350 million)",
        "label": "Long-Term Borrowings - Six Point Four Five Percent Due June 2033 [Member]",
        "documentation": ""
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LongTermBorrowingsSixPointSevenFivePercentDueFebruary2039Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LongTermBorrowingsSixPointSevenFivePercentDueFebruary2039Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "6.75% due February 1, 2039 (US$400 million)",
        "label": "Long-Term Borrowings - Six Point Seven Five Percent Due February 2039 [Member]",
        "documentation": ""
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LongTermBorrowingsSixPointTwoFivePercentDueMarch2038Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LongTermBorrowingsSixPointTwoFivePercentDueMarch2038Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "6.25% due March 15, 2038 (US$1,100 million)",
        "label": "Long-Term Borrowings - Six Point Two Five Percent Due March 2038 [Member]",
        "documentation": ""
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LongTermBorrowingsThreePointEightFivePercentDueJune2027Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LongTermBorrowingsThreePointEightFivePercentDueJune2027Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "3.85% due June 1, 2027 (US$1,250 million)",
        "label": "Long-Term Borrowings - Three Point Eight Five Percent Due June 2027 [Member]",
        "documentation": ""
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LongTermBorrowingsThreePointNineZeroPercentDueFebruary2025Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LongTermBorrowingsThreePointNineZeroPercentDueFebruary2025Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "3.90% due February 1, 2025 (US$600 million)",
        "verboseLabel": "3.90% due on February 2025",
        "label": "Long-Term Borrowings - Three Point Nine Zero Percent Due February 2025 [Member]",
        "documentation": ""
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LongTermBorrowingsTwoPointNineFivePercentDueJuly2030Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LongTermBorrowingsTwoPointNineFivePercentDueJuly2030Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "2.95% due July 15, 2030 (US$500 million)",
        "label": "Long-Term Borrowings - Two Point Nine Five Percent Due July 2030 [Member]",
        "documentation": ""
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LongTermBorrowingsTwoPointZeroFivePercentDueJuly2025Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LongTermBorrowingsTwoPointZeroFivePercentDueJuly2025Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "2.05% due July 15, 2025 (US$600 million)",
        "verboseLabel": "2.05% due on July 2025",
        "label": "Long-Term Borrowings - Two Point Zero Five Percent Due July 2025 [Member]",
        "documentation": ""
       }
      }
     },
     "auth_ref": []
    },
    "cnq_LongTermBorrowingsUSDollarDebtSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "LongTermBorrowingsUSDollarDebtSecuritiesMember",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Long Term Borrowings, US Dollar Debt Securities",
        "label": "Long Term Borrowings, US Dollar Debt Securities [Member]",
        "documentation": "Long Term Borrowings, US Dollar Debt Securities"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LongtermBorrowings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LongtermBorrowings",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails": {
       "parentTag": "ifrs-full_Borrowings",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Long-term debt",
        "verboseLabel": "Long-term debt",
        "label": "Non-current portion of non-current borrowings"
       }
      },
      "en": {
       "role": {
        "documentation": "The non-current portion of non-current borrowings. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "ifrs-full_LongtermBorrowingsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LongtermBorrowingsMember",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationLiabilitiesArisingfromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Long-term debt",
        "label": "Long-term borrowings [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for long-term borrowings. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r349",
      "r353"
     ]
    },
    "ifrs-full_LongtermProvisionForDecommissioningRestorationAndRehabilitationCosts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LongtermProvisionForDecommissioningRestorationAndRehabilitationCosts",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails": {
       "parentTag": "ifrs-full_ProvisionForDecommissioningRestorationAndRehabilitationCosts",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Non-current asset retirement obligation",
        "label": "Non-current provision for decommissioning, restoration and rehabilitation costs"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of non-current provision for decommissioning, restoration and rehabilitation costs. [Refer: Provision for decommissioning, restoration and rehabilitation costs]"
       }
      }
     },
     "auth_ref": [
      "r342",
      "r343"
     ]
    },
    "ifrs-full_MaterialReconcilingItemsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MaterialReconcilingItemsMember",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Material reconciling items",
        "label": "Material reconciling items [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for material adjustments used to reconcile items in the entity's financial statements."
       }
      }
     },
     "auth_ref": [
      "r187"
     ]
    },
    "ifrs-full_MaturityAnalysisForNonderivativeFinancialLiabilities": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MaturityAnalysisForNonderivativeFinancialLiabilities",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsTables",
      "http://www.cnrl.com/role/LongTermDebtTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "Schedule of Debt Repayments",
        "terseLabel": "Schedule of Maturity Dates for Financial Liabilities",
        "label": "Disclosure of maturity analysis for non-derivative financial liabilities [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of a maturity analysis for non-derivative financial liabilities (including issued financial guarantee contracts) that shows the remaining contractual maturities. [Refer: Derivative financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r170",
      "r289"
     ]
    },
    "ifrs-full_MaturityAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MaturityAxis",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails",
      "http://www.cnrl.com/role/LongTermDebtScheduleofDebtRepaymentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Maturity [axis]",
        "label": "Maturity [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r101",
      "r113",
      "r114",
      "r117",
      "r118",
      "r119",
      "r125",
      "r154",
      "r172",
      "r197",
      "r199",
      "r211",
      "r214",
      "r285",
      "r320",
      "r341",
      "r368"
     ]
    },
    "ifrs-full_MaturityDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MaturityDomain",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails",
      "http://www.cnrl.com/role/LongTermDebtScheduleofDebtRepaymentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Maturity",
        "label": "Maturity [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated time bands. It also represents the standard value for the 'Maturity' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r101",
      "r113",
      "r114",
      "r117",
      "r118",
      "r119",
      "r125",
      "r154",
      "r197",
      "r199",
      "r211",
      "r214",
      "r285",
      "r320",
      "r341",
      "r368",
      "r370"
     ]
    },
    "cnq_MediumTermBorrowingsExpiringSeptemberTwoThousandTwentySevenMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "MediumTermBorrowingsExpiringSeptemberTwoThousandTwentySevenMember",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Medium-term borrowings expiring September 2027",
        "label": "Medium-Term Borrowings Expiring September Two Thousand Twenty Seven [Member]",
        "documentation": "Medium-Term Borrowings Expiring September Two Thousand Twenty Seven"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_MediumTermBorrowingsFourPointEightFivePercentDebenturesDueMay2047Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "MediumTermBorrowingsFourPointEightFivePercentDebenturesDueMay2047Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "4.85% debentures due May 30, 2047",
        "label": "Medium-Term Borrowings - Four Point Eight Five Percent Debentures Due May 2047 [Member]",
        "documentation": ""
       }
      }
     },
     "auth_ref": []
    },
    "cnq_MediumTermBorrowingsFourPointFiveFivePercentDebenturesDueFebruary82036Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "MediumTermBorrowingsFourPointFiveFivePercentDebenturesDueFebruary82036Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "4.55% debentures due February 8, 2036",
        "label": "Medium-Term Borrowings - Four Point Five Five Percent Debentures Due February 8, 2036 [Member]",
        "documentation": "Medium-Term Borrowings - Four Point Five Five Percent Debentures Due February 8, 2036"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_MediumTermBorrowingsFourPointOneFivePercentDebenturesDueDecember2031Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "MediumTermBorrowingsFourPointOneFivePercentDebenturesDueDecember2031Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "4.15% debentures due December 15, 2031",
        "label": "Medium-Term Borrowings - Four Point One Five Percent Debentures Due December 2031 [Member]",
        "documentation": ""
       }
      }
     },
     "auth_ref": []
    },
    "cnq_MediumTermBorrowingsThreePointFiveFivePercentDebenturesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "MediumTermBorrowingsThreePointFiveFivePercentDebenturesMember",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Medium Term Borrowings 3.55% Debentures",
        "label": "Medium Term Borrowings Three Point Five Five Percent Debentures [Member]",
        "documentation": "Medium Term Borrowings Three Point Five Five Percent Debentures"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_MediumTermBorrowingsThreePointFourTwoPercentDebenturesDueDecember2026Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "MediumTermBorrowingsThreePointFourTwoPercentDebenturesDueDecember2026Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "3.42% debentures due December 1, 2026",
        "label": "Medium-Term Borrowings - Three Point Four Two Percent Debentures Due December 2026 [Member]",
        "documentation": ""
       }
      }
     },
     "auth_ref": []
    },
    "cnq_MediumTermBorrowingsThreePointSevenFivePercentDebenturesDueFebruary82031Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "MediumTermBorrowingsThreePointSevenFivePercentDebenturesDueFebruary82031Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "3.75% debentures due February 8, 2031",
        "label": "Medium-Term Borrowings - Three Point Seven Five Percent Debentures Due February 8, 2031 [Member]",
        "documentation": "Medium-Term Borrowings - Three Point Seven Five Percent Debentures Due February 8, 2031"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_MediumTermBorrowingsThreePointThreeZeroPercentDebenturesDueDecember82028Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "MediumTermBorrowingsThreePointThreeZeroPercentDebenturesDueDecember82028Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "3.30% debentures due December 8, 2028",
        "label": "Medium-Term Borrowings - Three Point Three Zero Percent Debentures Due December 8, 2028 [Member]",
        "documentation": "Medium-Term Borrowings - Three Point Three Zero Percent Debentures Due December 8, 2028"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_MediumTermBorrowingsTwoPointFiveZeroPercentDebenturesDueJanuary2028Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "MediumTermBorrowingsTwoPointFiveZeroPercentDebenturesDueJanuary2028Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "2.50% debentures due January 17, 2028",
        "label": "Medium-Term Borrowings - Two Point Five Zero Percent Debentures Due January 2028 [Member]",
        "documentation": ""
       }
      }
     },
     "auth_ref": []
    },
    "cnq_MediumTermNotesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "MediumTermNotesMember",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Medium-Term Notes",
        "label": "Medium-Term Notes [Member]",
        "documentation": "Medium-Term Notes"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_MidstreamAndRefiningSegmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "MidstreamAndRefiningSegmentMember",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesSegmentedAssetRetirementObligationsDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SegmentedInformationSegmentedAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Midstream and Refining",
        "label": "Midstream And Refining Segment [Member]",
        "documentation": "Midstream And Refining Segment [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_MinimumLeasePaymentsPayableUnderNonCancellableLease": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "MinimumLeasePaymentsPayableUnderNonCancellableLease",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Offshore vessels and equipment, field equipment and power",
        "label": "Minimum Lease Payments Payable Under Non-Cancellable Lease",
        "documentation": "Minimum Lease Payments Payable Under Non-Cancellable Lease"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_MiscellaneousOtherLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "MiscellaneousOtherLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other",
        "label": "Miscellaneous Other Liabilities",
        "documentation": "Miscellaneous Other Liabilities"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NaturalGasEmbeddedDerivativeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NaturalGasEmbeddedDerivativeMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractNarrativeDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsPriceandDiscountRateSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Natural gas embedded derivative",
        "label": "Natural Gas Embedded Derivative [Member]",
        "documentation": "Natural Gas Embedded Derivative"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NaturalGasHubAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NaturalGasHubAxis",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Natural Gas Hub [Axis]",
        "label": "Natural Gas Hub [Axis]",
        "documentation": "Natural Gas Hub [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NaturalGasHubDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NaturalGasHubDomain",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Natural Gas Hub [Domain]",
        "label": "Natural Gas Hub [Domain]",
        "documentation": "[Domain] for Natural Gas Hub [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "srt_NaturalGasLiquidsReservesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "NaturalGasLiquidsReservesMember",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Natural Gas Liquids (NGL)",
        "label": "Natural Gas Liquids (NGL) [Member]",
        "documentation": "Liquid or liquefied hydrocarbon produced in manufacture, purification, and stabilization of natural gas (NGL). Excludes crude oil, natural gas, synthetic oil and gas, and other nonrenewable natural resources."
       }
      }
     },
     "auth_ref": [
      "r401",
      "r425",
      "r426"
     ]
    },
    "srt_NaturalGasReservesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "NaturalGasReservesMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedNaturalGasNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Natural Gas",
        "label": "Natural Gas [Member]",
        "documentation": "Natural gas composed primarily of methane gas, excluding liquid or condensate natural gas."
       }
      }
     },
     "auth_ref": [
      "r0",
      "r425",
      "r426"
     ]
    },
    "cnq_NetExpendituresProceedsExplorationForAndEvaluationOfMineralResources": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NetExpendituresProceedsExplorationForAndEvaluationOfMineralResources",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails": {
       "parentTag": "cnq_NetExpendituresProceedsExplorationForAndEvaluationOfMineralResourcesAndPropertyPlantAndEquipment",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Net expenditures",
        "label": "Net Expenditures (Proceeds), Exploration For And Evaluation Of Mineral Resources",
        "documentation": "Net Expenditures (Proceeds), Exploration For And Evaluation Of Mineral Resources"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NetExpendituresProceedsExplorationForAndEvaluationOfMineralResourcesAndPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NetExpendituresProceedsExplorationForAndEvaluationOfMineralResourcesAndPropertyPlantAndEquipment",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Net expenditures",
        "label": "Net Expenditures (Proceeds), Exploration For And Evaluation Of Mineral Resources And Property, Plant and Equipment",
        "documentation": "Net Expenditures (Proceeds), Exploration For And Evaluation Of Mineral Resources And Property, Plant and Equipment"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NetExpendituresProceedsPropertyPlantandEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NetExpendituresProceedsPropertyPlantandEquipment",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails": {
       "parentTag": "cnq_NetExpendituresProceedsExplorationForAndEvaluationOfMineralResourcesAndPropertyPlantAndEquipment",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Net expenditures",
        "label": "Net Expenditures (Proceeds), Property, Plant and Equipment",
        "documentation": "Net Expenditures (Proceeds), Property, Plant and Equipment"
       }
      }
     },
     "auth_ref": []
    },
    "srt_NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails": {
       "parentTag": "srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Net changes in sales prices and production costs",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Sale and Transfer Prices and Production Cost, Increase (Decrease)",
        "documentation": "Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in sales and transfer prices and in production (lifting) costs related to future production."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "cnq_NetWorkingCapitalAssetsRecognizedAsOfAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NetWorkingCapitalAssetsRecognizedAsOfAcquisitionDate",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Net working capital",
        "label": "Net Working Capital Assets Recognized As Of Acquisition Date",
        "documentation": "Net Working Capital Assets Recognized As Of Acquisition Date"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NewProvisionsOtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NewProvisionsOtherProvisions",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Liabilities incurred",
        "label": "New provisions, other provisions"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount recognised for new other provisions. [Refer: Other provisions]"
       }
      }
     },
     "auth_ref": [
      "r410"
     ]
    },
    "cnq_NinianFieldInTheNorthSeaAndTBlockAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NinianFieldInTheNorthSeaAndTBlockAssetsMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Ninian Field In The North Sea and T-Block Assets",
        "label": "Ninian Field In The North Sea And T-Block Assets [Member]",
        "documentation": "Ninian Field In The North Sea And T-Block Assets"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NinianFieldInTheNorthSeaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NinianFieldInTheNorthSeaMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Ninian Field in the North Sea",
        "label": "Ninian Field In The North Sea [Member]",
        "documentation": "Ninian Field In The North Sea"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NonCashAndFairValueChangesExplorationForAndEvaluationOfMineralResources": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NonCashAndFairValueChangesExplorationForAndEvaluationOfMineralResources",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails": {
       "parentTag": "cnq_NonCashAndFairValueChangesExplorationForAndEvaluationOfMineralResourcesAndPropertyPlantAndEquipment",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Non-cash and fair value changes",
        "label": "Non-Cash And Fair Value Changes, Exploration For And Evaluation Of Mineral Resources",
        "documentation": "Non-Cash And Fair Value Changes, Exploration For And Evaluation Of Mineral Resources"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NonCashAndFairValueChangesExplorationForAndEvaluationOfMineralResourcesAndPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NonCashAndFairValueChangesExplorationForAndEvaluationOfMineralResourcesAndPropertyPlantAndEquipment",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Total non-cash and fair value changes",
        "label": "Non-Cash And Fair Value Changes, Exploration For And Evaluation Of Mineral Resources And Property, Plant and Equipment",
        "documentation": "Non-Cash And Fair Value Changes, Exploration For And Evaluation Of Mineral Resources And Property, Plant and Equipment"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NonCashAndFairValueChangesPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NonCashAndFairValueChangesPropertyPlantAndEquipment",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails": {
       "parentTag": "cnq_NonCashAndFairValueChangesExplorationForAndEvaluationOfMineralResourcesAndPropertyPlantAndEquipment",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Non-cash and fair value changes",
        "label": "Non-Cash And Fair Value Changes, Property, Plant And Equipment",
        "documentation": "Non-Cash And Fair Value Changes, Property, Plant And Equipment"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NonCashChangesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NonCashChangesAbstract",
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationLiabilitiesArisingfromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Non-cash changes:",
        "label": "Non-Cash Changes [Abstract]",
        "documentation": "Non-Cash Changes"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NonCurrentDerivativeFinancialAssetsLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NonCurrentDerivativeFinancialAssetsLiabilities",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsEstimatedFairValuesofDerivativeFinancialInstrumentsIncludedinRiskManagementAssetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "Derivative (liability) asset",
        "label": "Non-Current Derivative Financial Assets (Liabilities)",
        "documentation": "Non-Current Derivative Financial Assets (Liabilities)"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NonCurrentInventory": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NonCurrentInventory",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofOtherLongTermAssetsDetails_1": {
       "parentTag": "ifrs-full_OtherAssets",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofOtherLongTermAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Long-term inventory",
        "label": "Non-Current Inventory",
        "documentation": "Non-Current Inventory"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NonCurrentLiabilitiesFromShareBasedPaymentTransactions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NonCurrentLiabilitiesFromShareBasedPaymentTransactions",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesShareBasedCompensationDetails": {
       "parentTag": "ifrs-full_LiabilitiesFromSharebasedPaymentTransactions2011",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesShareBasedCompensationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Non-current liabilities from share-based payment arrangements",
        "label": "Non-Current Liabilities From Share-Based Payment Transactions",
        "documentation": "Non-Current Liabilities From Share-Based Payment Transactions"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NonRevolvingSyndicatedCreditFacilityMaturingDecember2027Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NonRevolvingSyndicatedCreditFacilityMaturingDecember2027Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Non-revolving credit facility maturing December 2027",
        "label": "Non-Revolving Syndicated Credit Facility Maturing December 2027 [Member]",
        "documentation": "Non-Revolving Syndicated Credit Facility Maturing December 2027"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NoncurrentAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NoncurrentAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofAssetsLiabilitiesPartnersEquityandEquityLossIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Non-current assets",
        "label": "Non-current assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of assets that do not meet the definition of current assets. [Refer: Current assets]"
       }
      }
     },
     "auth_ref": [
      "r83",
      "r321",
      "r354"
     ]
    },
    "ifrs-full_NoncurrentAssetsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NoncurrentAssetsAbstract",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Non-current assets",
        "label": "Non-current assets [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NoncurrentDerivativeFinancialLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NoncurrentDerivativeFinancialLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails_1": {
       "parentTag": "cnq_DerivativeFinancialAssetsLiabilitiesNet",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandReconciliationofDerivativeFinancialInstrumentsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other long-term liabilities",
        "verboseLabel": "Fair value ($ millions)",
        "label": "Non-current derivative financial liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of non-current derivative financial liabilities. [Refer: Derivative financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "ifrs-full_NoncurrentLeaseLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NoncurrentLeaseLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/LeasesScheduleofLeasesImpactonNetEarningsandCashFlowDetails": {
       "parentTag": "ifrs-full_LeaseLiabilities",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/LeasesScheduleofLeasesImpactonNetEarningsandCashFlowDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Lease liabilities",
        "label": "Non-current lease liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of non-current lease liabilities. [Refer: Lease liabilities]"
       }
      }
     },
     "auth_ref": [
      "r103"
     ]
    },
    "ifrs-full_NoncurrentLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NoncurrentLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofAssetsLiabilitiesPartnersEquityandEquityLossIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Non-current liabilities",
        "label": "Non-current liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities that do not meet the definition of current liabilities. [Refer: Current liabilities]"
       }
      }
     },
     "auth_ref": [
      "r85",
      "r322",
      "r354"
     ]
    },
    "cnq_NormalCourseIssuerBidPercentOfIssuedAndOutstandingShares": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NormalCourseIssuerBidPercentOfIssuedAndOutstandingShares",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Normal course issuer bid, percent of issued and outstanding shares",
        "label": "Normal Course Issuer Bid, Percent Of Issued And Outstanding Shares",
        "documentation": "Normal Course Issuer Bid, Percent Of Issued And Outstanding Shares"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NorthAmericaExplorationAndProductionSegmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NorthAmericaExplorationAndProductionSegmentMember",
     "presentation": [
      "http://www.cnrl.com/role/ExplorationandEvaluationAssetsDetailedInformationaboutExplorationandEvaluationAssetsDetails",
      "http://www.cnrl.com/role/LeasesScheduleofLeaseAssetsDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesSegmentedAssetRetirementObligationsDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails",
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SegmentedInformationSegmentedAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "North America",
        "label": "North America - Exploration And Production Segment [Member]",
        "documentation": "North America - Exploration And Production Segment [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "srt_NorthAmericaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "NorthAmericaMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCostsIncurredinCrudeOilandNaturalGasActivitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "North America",
        "label": "North America [Member]",
        "documentation": "Continent of North America."
       }
      }
     },
     "auth_ref": [
      "r427",
      "r428",
      "r429",
      "r430"
     ]
    },
    "cnq_NorthSeaBrentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NorthSeaBrentMember",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Brent",
        "label": "North Sea Brent [Member]",
        "documentation": "North Sea Brent [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NorthSeaExplorationAndProductionSegmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NorthSeaExplorationAndProductionSegmentMember",
     "presentation": [
      "http://www.cnrl.com/role/ExplorationandEvaluationAssetsDetailedInformationaboutExplorationandEvaluationAssetsDetails",
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails",
      "http://www.cnrl.com/role/LeasesScheduleofLeaseAssetsDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesSegmentedAssetRetirementObligationsDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails",
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SegmentedInformationSegmentedAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "North Sea",
        "label": "North Sea - Exploration And Production Segment [Member]",
        "documentation": "North Sea - Exploration And Production Segment [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NorthSeaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NorthSeaMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCostsIncurredinCrudeOilandNaturalGasActivitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "North Sea",
        "label": "North Sea [Member]",
        "documentation": "North Sea [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NorthWestRedwaterPartnershipMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NorthWestRedwaterPartnershipMember",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofAssetsLiabilitiesPartnersEquityandEquityLossIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "North West Redwater Partnership",
        "label": "North West Redwater Partnership [Member]",
        "documentation": "North West Redwater Partnership [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NotLaterThanOneYearMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NotLaterThanOneYearMember",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails",
      "http://www.cnrl.com/role/LongTermDebtScheduleofDebtRepaymentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "2026",
        "terseLabel": "Less than 1 year",
        "label": "Not later than one year [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of not later than one year."
       }
      }
     },
     "auth_ref": [
      "r113",
      "r114",
      "r125",
      "r209",
      "r212",
      "r319",
      "r368",
      "r372"
     ]
    },
    "ifrs-full_NotionalAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NotionalAmount",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsForeignCurrencyExchangeRateRiskManagementNarrativeDetails",
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Notional amount",
        "label": "Notional amount"
       }
      },
      "en": {
       "role": {
        "documentation": "The nominal or face amount of a financial instrument, used to calculate payments made on that instrument."
       }
      }
     },
     "auth_ref": [
      "r433"
     ]
    },
    "cnq_NumberOfCustomersWithRevenueConcentrationOfRisk": {
     "xbrltype": "integerItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NumberOfCustomersWithRevenueConcentrationOfRisk",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCounterpartyCreditRiskManagementNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Number of customers, major international energy companies with investment grade ratings",
        "label": "Number Of Customers With Revenue Concentration Of Risk",
        "documentation": "Number Of Customers With Revenue Concentration Of Risk"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NumberOfGeographicSegments": {
     "xbrltype": "integerItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NumberOfGeographicSegments",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Number of geographic segments",
        "label": "Number Of Geographic Segments",
        "documentation": "Number Of Geographic Segments"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NumberOfInstrumentsThatAreAntidilutiveInPeriodPresented": {
     "xbrltype": "decimalItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NumberOfInstrumentsThatAreAntidilutiveInPeriodPresented",
     "presentation": [
      "http://www.cnrl.com/role/NetEarningsPerCommonShareNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Number of instruments that are antidilutive in period presented (in shares)",
        "label": "Number of instruments that are antidilutive in period presented"
       }
      },
      "en": {
       "role": {
        "documentation": "Number of (units of) instruments that are antidilutive in the period presented."
       }
      }
     },
     "auth_ref": [
      "r43"
     ]
    },
    "ifrs-full_NumberOfOutstandingShareOptions": {
     "xbrltype": "decimalItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NumberOfOutstandingShareOptions",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails",
      "http://www.cnrl.com/role/ShareCapitalStockOptionActivityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "periodStartLabel": "Stock options outstanding - beginning of year (in shares)",
        "periodEndLabel": "Stock options outstanding - end of year (in shares)",
        "terseLabel": "Stock options outstanding (in shares)",
        "label": "Number of share options outstanding in share-based payment arrangement"
       }
      },
      "en": {
       "role": {
        "documentation": "The number of share options outstanding in a share-based payment arrangement."
       }
      }
     },
     "auth_ref": [
      "r126",
      "r130",
      "r133",
      "r266",
      "r270"
     ]
    },
    "ifrs-full_NumberOfShareOptionsExercisableInSharebasedPaymentArrangement": {
     "xbrltype": "decimalItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NumberOfShareOptionsExercisableInSharebasedPaymentArrangement",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails",
      "http://www.cnrl.com/role/ShareCapitalStockOptionActivityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Stock options exercisable (in shares)",
        "label": "Number of share options exercisable in share-based payment arrangement"
       }
      },
      "en": {
       "role": {
        "documentation": "The number of share options exercisable in a share-based payment arrangement."
       }
      }
     },
     "auth_ref": [
      "r131",
      "r271"
     ]
    },
    "ifrs-full_NumberOfShareOptionsExercisedInSharebasedPaymentArrangement": {
     "xbrltype": "decimalItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NumberOfShareOptionsExercisedInSharebasedPaymentArrangement",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalOutstandingCommonSharesDetails",
      "http://www.cnrl.com/role/ShareCapitalStockOptionActivityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "Issued upon exercise of stock options (in shares)",
        "negatedTerseLabel": "Stock options exercised for common shares (in shares)",
        "label": "Number of share options exercised in share-based payment arrangement"
       }
      },
      "en": {
       "role": {
        "documentation": "The number of share options exercised in a share-based payment arrangement."
       }
      }
     },
     "auth_ref": [
      "r129",
      "r269"
     ]
    },
    "ifrs-full_NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement": {
     "xbrltype": "decimalItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalStockOptionActivityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Stock options forfeited (in shares)",
        "label": "Number of share options forfeited in share-based payment arrangement"
       }
      },
      "en": {
       "role": {
        "documentation": "The number of share options forfeited in a share-based payment arrangement."
       }
      }
     },
     "auth_ref": [
      "r128",
      "r268"
     ]
    },
    "ifrs-full_NumberOfShareOptionsGrantedInSharebasedPaymentArrangement": {
     "xbrltype": "decimalItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NumberOfShareOptionsGrantedInSharebasedPaymentArrangement",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalStockOptionActivityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Stock options granted (in shares)",
        "label": "Number of share options granted in share-based payment arrangement"
       }
      },
      "en": {
       "role": {
        "documentation": "The number of share options granted in a share-based payment arrangement."
       }
      }
     },
     "auth_ref": [
      "r127",
      "r267"
     ]
    },
    "cnq_NumberOfShareOptionsSurrenderedForCashInSharebasedPaymentArrangement": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NumberOfShareOptionsSurrenderedForCashInSharebasedPaymentArrangement",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalStockOptionActivityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Stock options surrendered for cash settlement (in shares)",
        "label": "Number Of Share Options Surrendered For Cash In Share-based Payment Arrangement",
        "documentation": "Number Of Share Options Surrendered For Cash In Share-based Payment Arrangement"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_NumberOfSharesAuthorisedInShareBasedPaymentArrangementAsAPercentageOfCommonSharesOutstanding": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "NumberOfSharesAuthorisedInShareBasedPaymentArrangementAsAPercentageOfCommonSharesOutstanding",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Shares that may be reserved for issuance as a percentage of common shares outstanding",
        "label": "Number Of Shares Authorised In Share Based Payment Arrangement As A Percentage Of Common Shares Outstanding",
        "documentation": "Number Of Shares Authorised In Share Based Payment Arrangement As A Percentage Of Common Shares Outstanding"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NumberOfSharesOutstanding": {
     "xbrltype": "sharesItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NumberOfSharesOutstanding",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalOutstandingCommonSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "periodStartLabel": "Balance - beginning of year (in shares)",
        "periodEndLabel": "Balance - end of year (in shares)",
        "label": "Number of shares outstanding"
       }
      },
      "en": {
       "role": {
        "documentation": "The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares]"
       }
      }
     },
     "auth_ref": [
      "r217",
      "r295",
      "r325"
     ]
    },
    "cnq_OfficeLeasesAndOtherMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "OfficeLeasesAndOtherMember",
     "presentation": [
      "http://www.cnrl.com/role/LeasesLeaseAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Office leases and other",
        "label": "Office Leases And Other [Member]",
        "documentation": "Office Leases And Other [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_OffshoreAfricaExplorationAndProductionSegmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "OffshoreAfricaExplorationAndProductionSegmentMember",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarningsParenthetical",
      "http://www.cnrl.com/role/ExplorationandEvaluationAssetsDetailedInformationaboutExplorationandEvaluationAssetsDetails",
      "http://www.cnrl.com/role/LeasesScheduleofLeaseAssetsDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesSegmentedAssetRetirementObligationsDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails",
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SegmentedInformationSegmentedAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Offshore Africa",
        "label": "Offshore Africa - Exploration And Production Segment [Member]",
        "documentation": "Offshore Africa - Exploration And Production Segment [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_OffshoreAfricaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "OffshoreAfricaMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionforIncomeTaxDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCostsIncurredinCrudeOilandNaturalGasActivitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Offshore Africa",
        "label": "Offshore Africa [Member]",
        "documentation": "Offshore Africa [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_OffshoreVesselsAndEquipmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "OffshoreVesselsAndEquipmentMember",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails",
      "http://www.cnrl.com/role/LeasesLeaseAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Offshore vessels and equipment",
        "label": "Offshore Vessels And Equipment [Member]",
        "documentation": "Offshore Vessels And Equipment [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_OilAndGas1Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "OilAndGas1Member",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Oil And Gas",
        "label": "Oil And Gas1 [Member]",
        "documentation": "Oil And Gas1 [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OilAndGasAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OilAndGasAssetsMember",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedCapitalizedCostsRelatedtoCrudeOilandNaturalGasActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Oil and gas assets",
        "label": "Oil and gas assets [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for oil and gas assets. [Refer: Oil and gas assets]"
       }
      }
     },
     "auth_ref": [
      "r404"
     ]
    },
    "cnq_OilAndGasAverageSalePriceAndProductionCostPerUnit1LineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "OilAndGasAverageSalePriceAndProductionCostPerUnit1LineItems",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Oil And Gas, Average Sale Price And Production Cost Per Unit1 [Line Items]",
        "label": "Oil And Gas, Average Sale Price And Production Cost Per Unit1 [Line Items]",
        "documentation": "[Line Items] for Oil And Gas, Average Sale Price And Production Cost Per Unit1 [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_OilAndGasAverageSalePriceAndProductionCostPerUnit1Table": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "OilAndGasAverageSalePriceAndProductionCostPerUnit1Table",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Oil And Gas, Average Sale Price And Production Cost Per Unit1 [Table]",
        "label": "Oil And Gas, Average Sale Price And Production Cost Per Unit1 [Table]",
        "documentation": "Oil And Gas, Average Sale Price And Production Cost Per Unit1 [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "srt_OilReservesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "OilReservesMember",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedOilandNaturalGasLiquidsNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Crude Oil and NGLs",
        "verboseLabel": "Crude Oil, Synthetic Crude Oil, Bitumen, Natural Gas, Natural Gas Liquids",
        "label": "Crude Oil, Condensate, and Natural Gas Liquids (NGL) [Member]",
        "documentation": "Crude oil, which may also include condensate and natural gas liquids."
       }
      }
     },
     "auth_ref": [
      "r0",
      "r425",
      "r426"
     ]
    },
    "cnq_OilSandsMiningAndUpgradingSegmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "OilSandsMiningAndUpgradingSegmentMember",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails",
      "http://www.cnrl.com/role/ExplorationandEvaluationAssetsDetailedInformationaboutExplorationandEvaluationAssetsDetails",
      "http://www.cnrl.com/role/LeasesScheduleofLeaseAssetsDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesSegmentedAssetRetirementObligationsDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails",
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SegmentedInformationSegmentedAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Oil Sands Mining and Upgrading",
        "label": "Oil Sands Mining And Upgrading Segment [Member]",
        "documentation": "Oil Sands Mining And Upgrading Segment [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_OperatingSegmentsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "OperatingSegmentsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Operating Segments [Abstract]",
        "label": "Operating Segments [Abstract]",
        "documentation": "Operating Segments [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OperatingSegmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OperatingSegmentsMember",
     "presentation": [
      "http://www.cnrl.com/role/LeasesScheduleofLeaseAssetsDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SegmentedInformationSegmentedAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Operating segments",
        "label": "Operating segments [member]"
       }
      }
     },
     "auth_ref": [
      "r187"
     ]
    },
    "cnq_OperatorOfJointOperationPercentOfLeaseAssetsAndLiabilitiesRecognized": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "OperatorOfJointOperationPercentOfLeaseAssetsAndLiabilitiesRecognized",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Operator of joint operation, percent of lease assets and liabilities recognized",
        "label": "Operator Of Joint Operation, Percent Of Lease Assets And Liabilities Recognized",
        "documentation": "Operator Of Joint Operation, Percent Of Lease Assets And Liabilities Recognized"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OrdinarySharesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OrdinarySharesMember",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofChangesinEquity",
      "http://www.cnrl.com/role/ShareCapitalOutstandingCommonSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "Common shares",
        "terseLabel": "Ordinary shares",
        "label": "Ordinary shares [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for equity instruments that are subordinate to all other classes of equity instruments."
       }
      }
     },
     "auth_ref": [
      "r437"
     ]
    },
    "cnq_OriginalIssuePremiumsDiscountsNetMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "OriginalIssuePremiumsDiscountsNetMember",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Original issue discounts, net",
        "label": "Original Issue Premiums (Discounts), Net [Member]",
        "documentation": "Original Issue Premiums (Discounts), Net [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_OtherAcquisitionsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "OtherAcquisitionsMember",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other Acquisitions",
        "label": "Other Acquisitions [Member]",
        "documentation": "Other Acquisitions"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofOtherLongTermAssetsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      },
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofOtherLongTermAssetsDetails_1": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofOtherLongTermAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Other assets",
        "label": "Other assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of assets that the entity does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "cnq_OtherCommitments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "OtherCommitments",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other",
        "label": "Other Commitments",
        "documentation": "Other Commitments"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncome": {
       "parentTag": "ifrs-full_ComprehensiveIncome",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofChangesinEquity",
      "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Other comprehensive (loss) income, net of taxes",
        "terseLabel": "Other comprehensive (loss) income, net of taxes",
        "label": "Other comprehensive income"
       }
      }
     },
     "auth_ref": [
      "r88",
      "r303",
      "r328",
      "r334"
     ]
    },
    "ifrs-full_OtherComprehensiveIncomeNetOfTaxCashFlowHedges": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeNetOfTaxCashFlowHedges",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncome": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Net change in derivative financial instruments designated as cash flow hedges",
        "label": "Other comprehensive income, net of tax, cash flow hedges"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of other comprehensive income, net of tax, after reclassification adjustments, related to cash flow hedges. [Refer: Cash flow hedges [member]; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r323",
      "r334"
     ]
    },
    "ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncome": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Translation of net investment",
        "label": "Other comprehensive income, net of tax, exchange differences on translation of foreign operations"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of other comprehensive income, net of tax, after reclassification adjustments, related to exchange differences when financial statements of foreign operations are translated. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r323",
      "r334"
     ]
    },
    "ifrs-full_OtherCurrentAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherCurrentAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofOtherLongTermAssetsDetails": {
       "parentTag": "ifrs-full_OtherAssets",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_CurrentAssets",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets",
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofOtherLongTermAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Current portion of other long-term assets",
        "verboseLabel": "Less: current portion",
        "label": "Other current assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current assets that the entity does not separately disclose in the same statement or note. [Refer: Current assets]"
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "ifrs-full_OtherCurrentLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherCurrentLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails_1": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_CurrentLiabilities",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Current portion of other long-term liabilities",
        "verboseLabel": "Less: current portion",
        "label": "Other current liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current liabilities that the entity does not separately disclose in the same statement or note. [Refer: Current liabilities]"
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "cnq_OtherExplorationAndProductionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "OtherExplorationAndProductionMember",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationSegmentedAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other",
        "label": "Other - Exploration And Production [Member]",
        "documentation": "Other - Exploration And Production [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_OtherIncomeAndRevenueMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "OtherIncomeAndRevenueMember",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other income and revenue",
        "label": "Other Income And Revenue [Member]",
        "documentation": "Other Income And Revenue"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsOperatingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherInflowsOutflowsOfCashClassifiedAsOperatingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other",
        "label": "Other inflows (outflows) of cash, classified as operating activities"
       }
      },
      "en": {
       "role": {
        "documentation": "Inflows (outflows) of cash, classified as operating activities, that the entity does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r65"
     ]
    },
    "ifrs-full_OtherLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      },
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails_1": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Other liabilities",
        "label": "Other liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities that the entity does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "cnq_OtherLiabilitiesFromShareBasedPaymentTransactions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "OtherLiabilitiesFromShareBasedPaymentTransactions",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesShareBasedCompensationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other",
        "label": "Other Liabilities From Share-Based Payment Transactions",
        "documentation": "Other Liabilities From Share-Based Payment Transactions"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherNoncurrentAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherNoncurrentAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofOtherLongTermAssetsDetails": {
       "parentTag": "ifrs-full_OtherAssets",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets",
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofOtherLongTermAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other long-term assets",
        "label": "Other non-current assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of non-current assets that the entity does not separately disclose in the same statement or note. [Refer: Non-current assets]"
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "ifrs-full_OtherNoncurrentLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherNoncurrentLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails_1": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets",
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other long-term liabilities",
        "label": "Other non-current liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of non-current liabilities that the entity does not separately disclose in the same statement or note. [Refer: Non-current liabilities]"
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "ifrs-full_OtherPropertyPlantAndEquipmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherPropertyPlantAndEquipmentMember",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other equipment",
        "label": "Other property, plant and equipment [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of property, plant and equipment representing property, plant and equipment that the entity does not separately disclose in the same statement or note. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r404"
     ]
    },
    "cnq_OtherProvisionsContingentLiabilitiesAndContingentAssetsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "OtherProvisionsContingentLiabilitiesAndContingentAssetsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other Provisions, Contingent Liabilities And Contingent Assets [Abstract]",
        "label": "Other Provisions, Contingent Liabilities And Contingent Assets [Abstract]",
        "documentation": "Other Provisions, Contingent Liabilities And Contingent Assets [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other",
        "label": "Other tax effects for reconciliation between accounting profit and tax expense (income)"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that the entity does not separately disclose in the same statement or note. [Refer: Accounting profit; Applicable tax rate]"
       }
      }
     },
     "auth_ref": [
      "r3",
      "r229"
     ]
    },
    "ifrs-full_OtherTemporaryDifferencesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherTemporaryDifferencesMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMovementsinDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other",
        "label": "Other temporary differences [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for temporary differences that the entity does not separately disclose in the same statement or note. [Refer: Temporary differences [member]]"
       }
      }
     },
     "auth_ref": [
      "r402"
     ]
    },
    "cnq_OtherWorkingCapitalRecognisedAsOfAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "OtherWorkingCapitalRecognisedAsOfAcquisitionDate",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Other working capital, net assets acquired",
        "label": "Other Working Capital Recognised As Of Acquisition Date",
        "documentation": "Other Working Capital Recognised As Of Acquisition Date"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_OthersAssetsRecognisedAsOfAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "OthersAssetsRecognisedAsOfAcquisitionDate",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Others assets",
        "label": "Others Assets Recognised As Of Acquisition Date",
        "documentation": "Others Assets Recognised As Of Acquisition Date"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_PalliserBlockAcquisitionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "PalliserBlockAcquisitionMember",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Palliser Block Acquisition",
        "label": "Palliser Block Acquisition [Member]",
        "documentation": "Palliser Block Acquisition"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_PalliserBlockCrudeOilAndNGLsAndNaturalGasMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "PalliserBlockCrudeOilAndNGLsAndNaturalGasMember",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Palliser Block Crude Oil and NGLs, and Natural Gas",
        "label": "Palliser Block Crude Oil and NGLs, and Natural Gas [Member]",
        "documentation": "Palliser Block Crude Oil and NGLs, and Natural Gas"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": -1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows",
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationLiabilitiesArisingfromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Payment of lease liabilities",
        "label": "Payments of lease liabilities, classified as financing activities"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for payment of lease liabilities, classified as financing activities. [Refer: Lease liabilities]"
       }
      }
     },
     "auth_ref": [
      "r347"
     ]
    },
    "ifrs-full_PaymentsOfOtherEquityInstruments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PaymentsOfOtherEquityInstruments",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesShareBasedCompensationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Cash payment for stock options surrendered and PSUs vested",
        "label": "Payments of other equity instruments"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for payments for equity instruments that the entity does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r416"
     ]
    },
    "ifrs-full_PaymentsToAcquireOrRedeemEntitysShares": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PaymentsToAcquireOrRedeemEntitysShares",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Purchase of common shares under Normal Course Issuer Bid",
        "label": "Payments to acquire or redeem entity's shares"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow to acquire or redeem entity's shares."
       }
      }
     },
     "auth_ref": [
      "r345"
     ]
    },
    "cnq_PeaceRiverAreaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "PeaceRiverAreaMember",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Peace River Area",
        "label": "Peace River Area [Member]",
        "documentation": "Peace River Area"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_PercentageOfDividendIncreasedFromPreviousQuarterlyDividend": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "PercentageOfDividendIncreasedFromPreviousQuarterlyDividend",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Dividend increase percentage",
        "label": "Percentage Of Dividend Increased From Previous Quarterly Dividend",
        "documentation": "Percentage Of Dividend Increased From Previous Quarterly Dividend"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_PercentageOfEquityInterestAcquired": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "PercentageOfEquityInterestAcquired",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Interest acquired",
        "label": "Percentage Of Equity Interest Acquired",
        "documentation": "Percentage Of Equity Interest Acquired"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_PerformanceShareUnitsPSUMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "PerformanceShareUnitsPSUMember",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Performance Share Units",
        "label": "Performance Share Units (PSU) [Member]",
        "documentation": "Performance Share Units (PSU) [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_PetroleumRevenueTaxRecovery": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "PetroleumRevenueTaxRecovery",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails": {
       "parentTag": "ifrs-full_GrossProfit",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Petroleum revenue tax recovery",
        "label": "Petroleum Revenue Tax Recovery",
        "documentation": "Petroleum Revenue Tax Recovery"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_PrairieSkyRoyaltyLtd.Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "PrairieSkyRoyaltyLtd.Member",
     "presentation": [
      "http://www.cnrl.com/role/InvestmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "PrairieSky Royalty Ltd.",
        "label": "PrairieSky Royalty Ltd. [Member]",
        "documentation": "PrairieSky Royalty Ltd. [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_PrepaidServiceTolls": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "PrepaidServiceTolls",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofOtherLongTermAssetsDetails_1": {
       "parentTag": "ifrs-full_OtherAssets",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofOtherLongTermAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Prepaid cost of service tolls",
        "label": "Prepaid Service Tolls",
        "documentation": "Prepaid Service Tolls"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PrepaymentsAndAccruedIncomeIncludingContractAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PrepaymentsAndAccruedIncomeIncludingContractAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofOtherLongTermAssetsDetails_1": {
       "parentTag": "ifrs-full_OtherAssets",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofOtherLongTermAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Long-term prepayments, contracts and other",
        "label": "Prepayments and accrued income including contract assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of prepayments and accrued income, including contract assets. [Refer: Prepayments; Accrued income including contract assets]"
       }
      }
     },
     "auth_ref": [
      "r435",
      "r436"
     ]
    },
    "cnq_ProceedsFromAOSPAssetSwap": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ProceedsFromAOSPAssetSwap",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Cash from AOSP asset swap",
        "label": "Proceeds From AOSP Asset Swap",
        "documentation": "Proceeds From AOSP Asset Swap"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProceedsFromExerciseOfOptions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProceedsFromExerciseOfOptions",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Issuance of common shares on exercise of stock options",
        "label": "Proceeds from exercise of options"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow from the exercise of options."
       }
      }
     },
     "auth_ref": [
      "r416"
     ]
    },
    "cnq_ProceedsFromSaleOfInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ProceedsFromSaleOfInvestments",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Net proceeds from investment",
        "label": "Proceeds From Sale Of Investments",
        "documentation": "Proceeds From Sale Of Investments"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ProceedsFromSaleOfInvestmentsCurrent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ProceedsFromSaleOfInvestmentsCurrent",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/InvestmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Cash proceeds",
        "label": "Proceeds From Sale Of Investments, Current",
        "documentation": "Proceeds From Sale Of Investments, Current"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ProceedsFromSaleOfInvestmentsCurrentPerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ProceedsFromSaleOfInvestmentsCurrentPerShare",
     "presentation": [
      "http://www.cnrl.com/role/InvestmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Cash proceeds per common share (CAD per share)",
        "label": "Proceeds From Sale of Investments, Current, Per Share",
        "documentation": "Proceeds From Sale of Investments, Current, Per Share"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ProductTransportationAndProcessingObligation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ProductTransportationAndProcessingObligation",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Transportation and processing contracts",
        "label": "Product Transportation And Processing Obligation",
        "documentation": "Product Transportation And Processing Obligation"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ProductTransportationAndStorageMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ProductTransportationAndStorageMember",
     "presentation": [
      "http://www.cnrl.com/role/LeasesLeaseAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Product transportation and storage",
        "label": "Product Transportation And Storage [Member]",
        "documentation": "Product Transportation And Storage [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProductsAndServicesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProductsAndServicesAxis",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Products and services [axis]",
        "label": "Products and services [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r188",
      "r357",
      "r377"
     ]
    },
    "ifrs-full_ProductsAndServicesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProductsAndServicesDomain",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Products and services",
        "label": "Products and services [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the entity's products and services. It also represents the standard value for the 'Products and services' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r188",
      "r357",
      "r377"
     ]
    },
    "ifrs-full_ProfitLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProfitLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncome": {
       "parentTag": "ifrs-full_ComprehensiveIncome",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows",
      "http://www.cnrl.com/role/ConsolidatedStatementsofChangesinEquity",
      "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncome",
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/NetEarningsPerCommonShareScheduleofBasicandDilutedNetEarningsperCommonShareDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofAssetsLiabilitiesPartnersEquityandEquityLossIncomeDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Net earnings",
        "terseLabel": "Net earnings",
        "verboseLabel": "Net income",
        "netLabel": "Net earnings",
        "label": "Profit (loss)"
       }
      },
      "en": {
       "role": {
        "documentation": "The total of income less expenses from continuing and discontinued operations, excluding the components of other comprehensive income. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r75",
      "r77",
      "r181",
      "r183",
      "r249",
      "r265",
      "r302",
      "r327",
      "r354",
      "r360"
     ]
    },
    "ifrs-full_ProfitLossBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProfitLossBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": "ifrs-full_ProfitLoss",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Earnings before taxes",
        "label": "Profit (loss) before tax"
       }
      }
     },
     "auth_ref": [
      "r148",
      "r373",
      "r374",
      "r384",
      "r385"
     ]
    },
    "ifrs-full_PropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PropertyPlantAndEquipment",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Property, plant and equipment",
        "periodStartLabel": "Property, plant and equipment at beginning of period",
        "periodEndLabel": "Property, plant and equipment at ending of period",
        "label": "Property, plant and equipment"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. Note that right-of-use assets are not included. [Contrast: Property, plant and equipment including right-of-use assets]"
       }
      }
     },
     "auth_ref": [
      "r16",
      "r240",
      "r312"
     ]
    },
    "ifrs-full_PropertyPlantAndEquipmentAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PropertyPlantAndEquipmentAbstract",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Property, plant and equipment",
        "label": "Property, plant and equipment [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_PropertyPlantAndEquipmentAndExplorationAndEvaluationAssetsRelatedTemporaryDifferencesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "PropertyPlantAndEquipmentAndExplorationAndEvaluationAssetsRelatedTemporaryDifferencesMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMovementsinDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Property, plant and equipment and exploration and evaluation assets",
        "label": "Property, Plant And Equipment And Exploration And Evaluation Assets Related Temporary Differences [Member]",
        "documentation": "Property, Plant And Equipment And Exploration And Evaluation Assets Related Temporary Differences [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDate",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/PropertyPlantandEquipmentSummaryofNetAssetsAcquiredDetails": {
       "parentTag": "ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentSummaryofNetAssetsAcquiredDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "Fair value, net of asset retirement obligation, net assets acquired",
        "terseLabel": "Property, plant and equipment",
        "label": "Property, plant and equipment recognised as of acquisition date"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount recognised as of the acquisition date for plant, property and equipment acquired in a business combination. [Refer: Property, plant and equipment; Total for all business combinations [member]]"
       }
      }
     },
     "auth_ref": [
      "r364",
      "r365",
      "r381"
     ]
    },
    "cnq_PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDateExcludingAssetRetirementObligations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDateExcludingAssetRetirementObligations",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Fair value of the Company's interests in the AOSP mines, net asset acquired",
        "label": "Property, Plant and Equipment Recognised As Of Acquisition Date, Excluding Asset Retirement Obligations",
        "documentation": "Property, Plant and Equipment Recognised As Of Acquisition Date, Excluding Asset Retirement Obligations"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProportionOfOwnershipInterestInSubsidiary": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProportionOfOwnershipInterestInSubsidiary",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Proportion of ownership interest in subsidiary",
        "label": "Proportion of ownership interest in subsidiary"
       }
      },
      "en": {
       "role": {
        "documentation": "The proportion of ownership interest in a subsidiary attributable to the entity. [Refer: Total for all subsidiaries [member]]"
       }
      }
     },
     "auth_ref": [
      "r36",
      "r38",
      "r78"
     ]
    },
    "ifrs-full_ProportionOfVotingRightsHeldInJointVenture": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProportionOfVotingRightsHeldInJointVenture",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails",
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofAssetsLiabilitiesPartnersEquityandEquityLossIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Company's voting percent interest in joint venture",
        "netLabel": "Partners' equity at Company's 50% interest",
        "label": "Proportion of voting rights held in joint venture"
       }
      },
      "en": {
       "role": {
        "documentation": "The proportion of the voting rights in a joint venture held by the entity. [Refer: Total for all joint ventures [member]]"
       }
      }
     },
     "auth_ref": [
      "r36",
      "r38",
      "r80"
     ]
    },
    "srt_ProvedDevelopedAndUndevelopedOilAndGasReserveQuantitiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ProvedDevelopedAndUndevelopedOilAndGasReserveQuantitiesTable",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedNaturalGasNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedOilandNaturalGasLiquidsNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Oil and Gas, Proved Reserve, Quantity [Table]",
        "label": "Oil and Gas, Proved Reserve, Quantity [Table]",
        "documentation": "Disclosure of information about quantity of proved developed and undeveloped reserves for oil and gas-producing activities."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "cnq_ProvedDevelopedAndUndevelopedReserves1RollForward": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ProvedDevelopedAndUndevelopedReserves1RollForward",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Proved Developed And Undeveloped Reserves [Roll Forward]",
        "label": "Proved Developed And Undeveloped Reserves1 [Roll Forward]",
        "documentation": "Proved Developed And Undeveloped Reserves1 [Roll Forward]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ProvedDevelopedAndUndevelopedReservesEconomicRevisionsDueToPrices": {
     "xbrltype": "volumeItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ProvedDevelopedAndUndevelopedReservesEconomicRevisionsDueToPrices",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedNaturalGasNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedOilandNaturalGasLiquidsNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Economic revisions due to prices (in MMbbl/Bcf)",
        "verboseLabel": "Economic revisions due to prices (in MMbbl/Bcf)",
        "label": "Proved Developed And Undeveloped Reserves, Economic Revisions Due To Prices",
        "documentation": "Proved Developed And Undeveloped Reserves, Economic Revisions Due To Prices"
       }
      }
     },
     "auth_ref": []
    },
    "srt_ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions": {
     "xbrltype": "volumeItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedNaturalGasNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedOilandNaturalGasLiquidsNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Extensions and discoveries (in MMbbl/Bcf)",
        "label": "Oil and Gas, Proved Reserve, Quantity, Volume, Addition from Extension and Discovery",
        "documentation": "Additions to proved reserves that result from (1) extension of the proved acreage of previously discovered (old) reservoirs through additional drilling in periods after discovery and (2) discovery of new fields with proved reserves or of new reservoirs of proved reserves in old fields."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_ProvedDevelopedAndUndevelopedReservesImprovedRecovery": {
     "xbrltype": "volumeItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ProvedDevelopedAndUndevelopedReservesImprovedRecovery",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedNaturalGasNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedOilandNaturalGasLiquidsNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Improved recovery (in MMbbl/Bcf)",
        "label": "Oil and Gas, Proved Reserve, Quantity, Volume, Improved Recovery",
        "documentation": "Changes in proved reserve estimates resulting from application of improved recovery techniques."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_ProvedDevelopedAndUndevelopedReservesNet": {
     "xbrltype": "volumeItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ProvedDevelopedAndUndevelopedReservesNet",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "periodStartLabel": "Proved reserves, net, beginning balance",
        "periodEndLabel": "Proved reserves, net, ending balance",
        "label": "Oil and Gas, Proved Reserve, Quantity, Volume",
        "documentation": "The net quantity of proved reserves as of the balance sheet date. Proved oil reserves are the estimated quantities of crude oil and natural gas liquids which geological and engineering data demonstrate with reasonable certainty to be recoverable."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_ProvedDevelopedAndUndevelopedReservesNetPeriodIncreaseDecrease": {
     "xbrltype": "volumeItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ProvedDevelopedAndUndevelopedReservesNetPeriodIncreaseDecrease",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedNaturalGasNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedOilandNaturalGasLiquidsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Change in proved developed and undeveloped reserves, net (in MMbbl)",
        "label": "Oil and Gas, Proved Reserve, Quantity, Volume, Period Increase (Decrease)",
        "documentation": "Volume increase (decrease) of proved reserves of oil and gas."
       }
      }
     },
     "auth_ref": [
      "r401"
     ]
    },
    "srt_ProvedDevelopedAndUndevelopedReservesProduction": {
     "xbrltype": "volumeItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ProvedDevelopedAndUndevelopedReservesProduction",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedNaturalGasNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedOilandNaturalGasLiquidsNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Production (in MMbbl)",
        "terseLabel": "Production (in MMbbl/Bcf)",
        "label": "Oil and Gas, Proved Reserve, Quantity, Volume, Production",
        "documentation": "Production of proved reserves."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_ProvedDevelopedAndUndevelopedReservesPurchasesOfMineralsInPlace": {
     "xbrltype": "volumeItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ProvedDevelopedAndUndevelopedReservesPurchasesOfMineralsInPlace",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedNaturalGasNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedOilandNaturalGasLiquidsNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Purchases of reserves in place (in MMbbl/Bcf)",
        "label": "Oil and Gas, Proved Reserve, Quantity, Volume, Purchase of Mineral in Place",
        "documentation": "Purchase of minerals in place."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease": {
     "xbrltype": "volumeItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedNaturalGasNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedOilandNaturalGasLiquidsNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Revisions of prior estimates (in MMbbl/Bcf)",
        "verboseLabel": "Revisions of prior estimates (in MMbbl/Bcf)",
        "label": "Oil and Gas, Proved Reserve, Quantity, Volume, Revision of Previous Estimate",
        "documentation": "Revisions represent changes in previous estimates of proved reserves, either upward or downward, resulting from new information (except for an increase in proved acreage) normally obtained from development drilling and production history or resulting from change in economic factors."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_ProvedDevelopedAndUndevelopedReservesSalesOfMineralsInPlace": {
     "xbrltype": "volumeItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ProvedDevelopedAndUndevelopedReservesSalesOfMineralsInPlace",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedNaturalGasNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedOilandNaturalGasLiquidsNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Sales of reserves in place (in MMbbl)",
        "terseLabel": "Sales of reserves in place (in MMbbl/Bcf)",
        "label": "Oil and Gas, Proved Reserve, Quantity, Volume, Sale of Mineral in Place",
        "documentation": "Sales of minerals in place."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_ProvedDevelopedReservesVolume": {
     "xbrltype": "volumeItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ProvedDevelopedReservesVolume",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Net proved developed reserves (in MMbbl/Bcf)",
        "label": "Oil and Gas, Proved Developed Reserve, Quantity, Volume",
        "documentation": "Net quantities of an enterprise's interests in proved developed reserves of either crude oil (including condensate and natural gas liquids), natural gas, synthetic oil and gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas as of the beginning and the end of the year. \"Net\" quantities of reserves include those relating to the enterprise's operating and nonoperating interests in properties. Quantities of reserves relating to royalty interests owned are included in \"net\" quantities if the necessary information is available to the enterprise. \"Net\" quantities does not include reserves relating to interests of others in properties owned by the enterprise. The unit of measure for reserve quantities is defined as \"barrels\" for oil and synthetic oil reserves or \"cubic feet\" or \"cubic meters\" for natural gas and synthetic gas reserves."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "ifrs-full_ProvisionForDecommissioningRestorationAndRehabilitationCosts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProvisionForDecommissioningRestorationAndRehabilitationCosts",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesScheduleofOtherLongTermLiabilitiesDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesSegmentedAssetRetirementObligationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Asset retirement obligations",
        "periodStartLabel": "Balance \u2013 beginning of year",
        "periodEndLabel": "Balance \u2013 end of year",
        "totalLabel": "Total provision for decommissioning, restoration and rehabilitation costs",
        "label": "Provision for decommissioning, restoration and rehabilitation costs"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of provision for costs related to decommissioning, restoration and rehabilitation. [Refer: Other provisions]"
       }
      }
     },
     "auth_ref": [
      "r342",
      "r343"
     ]
    },
    "ifrs-full_ProvisionForDecommissioningRestorationAndRehabilitationCostsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProvisionForDecommissioningRestorationAndRehabilitationCostsMember",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Provision for decommissioning, restoration and rehabilitation costs",
        "label": "Provision for decommissioning, restoration and rehabilitation costs [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a provision relating to decommissioning, restoration and rehabilitation costs. [Refer: Classes of other provisions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r342",
      "r343"
     ]
    },
    "ifrs-full_ProvisionUsedOtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProvisionUsedOtherProvisions",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Liabilities settled",
        "label": "Provision used, other provisions"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount used (ie incurred and charged against the provision) for other provisions. [Refer: Other provisions]"
       }
      }
     },
     "auth_ref": [
      "r51",
      "r253"
     ]
    },
    "ifrs-full_PurchaseOfExplorationAndEvaluationAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PurchaseOfExplorationAndEvaluationAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Purchase of exploration and evaluation assets",
        "label": "Purchase of exploration and evaluation assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for the purchase of exploration and evaluation assets. [Refer: Exploration and evaluation assets [member]]"
       }
      }
     },
     "auth_ref": [
      "r415"
     ]
    },
    "ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Purchase of property, plant and equipment",
        "label": "Purchase of property, plant and equipment, classified as investing activities"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for the purchases of property, plant and equipment, classified as investing activities. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r344"
     ]
    },
    "ifrs-full_RangeAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RangeAxis",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails",
      "http://www.cnrl.com/role/CapitalDisclosuresNarrativeDetails",
      "http://www.cnrl.com/role/CriticalAccountingEstimatesandJudgementsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractDetails",
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails",
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Range [axis]",
        "label": "Range [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r69",
      "r99",
      "r119",
      "r133",
      "r224",
      "r355",
      "r356",
      "r424"
     ]
    },
    "ifrs-full_RangeDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RangeDomain",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails",
      "http://www.cnrl.com/role/CapitalDisclosuresNarrativeDetails",
      "http://www.cnrl.com/role/CriticalAccountingEstimatesandJudgementsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractDetails",
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails",
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails",
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Range",
        "label": "Range [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregate ranges. It also represents the standard value for the 'Range' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r69",
      "r99",
      "r119",
      "r133",
      "r224",
      "r355",
      "r356",
      "r424"
     ]
    },
    "ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RangesOfExercisePricesForOutstandingShareOptionsAxis",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Ranges of exercise prices for outstanding share options [axis]",
        "label": "Ranges of exercise prices for outstanding share options [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r133"
     ]
    },
    "ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RangesOfExercisePricesForOutstandingShareOptionsDomain",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Ranges of exercise prices for outstanding share options [domain]",
        "label": "Ranges of exercise prices for outstanding share options [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated ranges of exercise prices for outstanding share options that are meaningful for assessing the number and timing of additional shares that may be issued and the cash that may be received upon exercise of those options. It also represents the standard value for the 'Ranges of exercise prices for outstanding share options' axis if no other member is used. [Refer: Range [domain]]"
       }
      }
     },
     "auth_ref": [
      "r133"
     ]
    },
    "ifrs-full_ReclassificationAdjustmentsOnCashFlowHedgesNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReclassificationAdjustmentsOnCashFlowHedgesNetOfTax",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncome": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeNetOfTaxCashFlowHedges",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Reclassification to net earnings, net of taxes of $2 million (2024\u00a0\u2013\u00a0$nil; 2023 \u2013 $nil)",
        "label": "Reclassification adjustments on cash flow hedges, net of tax"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of reclassification adjustments related to cash flow hedges, net of tax. Reclassification adjustments are amounts reclassified to profit (loss) in the current period that were recognised in other comprehensive income in the current or previous periods. [Refer: Cash flow hedges [member]; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r158",
      "r160",
      "r283",
      "r336"
     ]
    },
    "cnq_ReclassificationComparabilityAdjustmentPolicy1PolicyTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ReclassificationComparabilityAdjustmentPolicy1PolicyTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Reclassification",
        "label": "Reclassification, Comparability Adjustment, Policy1 [Policy Text Block]",
        "documentation": "Reclassification, Comparability Adjustment, Policy1"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAbstract",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Effect on income taxes of:",
        "label": "Reconciliation of accounting profit multiplied by applicable tax rates [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ReconciliationOfAccountingProfitMultipliedByEffectOnIncomeTaxesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ReconciliationOfAccountingProfitMultipliedByEffectOnIncomeTaxesAbstract",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Effect on income taxes of:",
        "label": "Reconciliation\u200b Of\u200b Accounting \u200bProfit \u200bMultiplied\u200b By Effect On Income Taxes [Abstract]",
        "documentation": "Reconciliation\u200b Of\u200b Accounting \u200bProfit \u200bMultiplied\u200b By Effect On Income Taxes"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ReconciliationOfChangesInDeferredTaxLiabilityAssetAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReconciliationOfChangesInDeferredTaxLiabilityAssetAbstract",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesSummaryofNetDeferredIncomeTaxLiabilityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Reconciliation of changes in deferred tax liability (asset) [abstract]",
        "label": "Reconciliation of changes in deferred tax liability (asset) [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ReconciliationOfChangesInDerivativeFinancialAssetsLiabilitiesNetRollForward": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ReconciliationOfChangesInDerivativeFinancialAssetsLiabilitiesNetRollForward",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsEstimatedFairValuesofDerivativeFinancialInstrumentsIncludedinRiskManagementAssetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Reconciliation Of Changes In Derivative Financial Assets (Liabilities), Net [Roll Forward]",
        "label": "Reconciliation Of Changes In Derivative Financial Assets (Liabilities), Net [Roll Forward]",
        "documentation": "Reconciliation Of Changes In Derivative Financial Assets (Liabilities), Net [Roll Forward]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ReconciliationOfChangesInLiabilitiesFromShareBasedPaymentTransactionsRollForward": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ReconciliationOfChangesInLiabilitiesFromShareBasedPaymentTransactionsRollForward",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesShareBasedCompensationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Reconciliation Of Changes In Liabilities From Share-Based Payment Transactions [Roll Forward]",
        "label": "Reconciliation Of Changes In Liabilities From Share-Based Payment Transactions [Roll Forward]",
        "documentation": "Reconciliation Of Changes In Liabilities From Share-Based Payment Transactions [Roll Forward]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract",
     "presentation": [
      "http://www.cnrl.com/role/ExplorationandEvaluationAssetsDetailedInformationaboutExplorationandEvaluationAssetsDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Reconciliation of changes in property, plant and equipment [abstract]",
        "label": "Reconciliation of changes in property, plant and equipment [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ReconciliationOfChangesInProvisionForDecommissioningRestorationAndRehabilitationCostsRollForward": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ReconciliationOfChangesInProvisionForDecommissioningRestorationAndRehabilitationCostsRollForward",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Reconciliation Of Changes In Provision For Decommissioning Restoration And Rehabilitation Costs [Roll Forward]",
        "label": "Reconciliation Of Changes In Provision For Decommissioning Restoration And Rehabilitation Costs [Roll Forward]",
        "documentation": "Reconciliation Of Changes In Provision For Decommissioning Restoration And Rehabilitation Costs [Roll Forward]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ReconciliationOfNumberOfSharesOutstandingAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReconciliationOfNumberOfSharesOutstandingAbstract",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalOutstandingCommonSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Number of shares\u2028(thousands)",
        "label": "Reconciliation of number of shares outstanding [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_RecoveryOfUnrecognisedShareOfLossesOfJointVentures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "RecoveryOfUnrecognisedShareOfLossesOfJointVentures",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Recovery of unrecognised share of losses of joint ventures",
        "label": "Recovery Of Unrecognised Share Of Losses Of Joint Ventures",
        "documentation": "Recovery Of Unrecognised Share Of Losses Of Joint Ventures"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_RelatedPartyAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "RelatedPartyAbstract",
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Related Party [Abstract]",
        "label": "Related Party [Abstract]",
        "documentation": "Related Party [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_RelatingToAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "RelatingToAbstract",
     "presentation": [
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationSupplementalScheduleofCashFlowInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Relating to:",
        "label": "Relating To [Abstract]",
        "documentation": "Relating To"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RepaymentsOfBorrowingsClassifiedAsFinancingActivities",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Repayment of long-term debt",
        "label": "Repayments of borrowings, classified as financing activities"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow to settle borrowings, classified as financing activities. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r346"
     ]
    },
    "cnq_RepaymentsOfLineOfCreditBorrowingsClassifiedAsFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "RepaymentsOfLineOfCreditBorrowingsClassifiedAsFinancingActivities",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Repayments of credit facility",
        "label": "Repayments Of Line Of Credit Borrowings, Classified As Financing Activities",
        "documentation": "Repayments Of Line Of Credit Borrowings, Classified As Financing Activities"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_RepaymentsOfLineOfCreditFacility": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "RepaymentsOfLineOfCreditFacility",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Repayments of line of credit facility",
        "label": "Repayments Of Line Of Credit Facility",
        "documentation": "Repayments Of Line Of Credit Facility"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_RepaymentsOfOtherLongTermBorrowingsClassifiedAsFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "RepaymentsOfOtherLongTermBorrowingsClassifiedAsFinancingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofCashFlows",
      "http://www.cnrl.com/role/SupplementalDisclosureofCashFlowInformationLiabilitiesArisingfromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Repayment of other long-term debt",
        "label": "Repayments Of Other Long-Term Borrowings, Classified As Financing Activities",
        "documentation": "Repayments Of Other Long-Term Borrowings, Classified As Financing Activities"
       }
      }
     },
     "auth_ref": []
    },
    "srt_RepurchaseAgreementCounterpartyNameDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "RepurchaseAgreementCounterpartyNameDomain",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Counterparty Name [Domain]",
        "label": "Counterparty Name [Domain]",
        "documentation": "Named other party that participates in a financial transaction. Examples include, but not limited to, the name of the financial institution."
       }
      }
     },
     "auth_ref": [
      "r195",
      "r196"
     ]
    },
    "srt_ReserveQuantitiesByTypeOfReserveAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ReserveQuantitiesByTypeOfReserveAxis",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedNaturalGasNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedOilandNaturalGasLiquidsNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Petroleum Reserves [Axis]",
        "label": "Petroleum Reserves [Axis]",
        "documentation": "Information by types of proved developed and undeveloped petroleum reserves."
       }
      }
     },
     "auth_ref": [
      "r0",
      "r425",
      "r426"
     ]
    },
    "srt_ReserveQuantitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ReserveQuantitiesLineItems",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedNaturalGasNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedOilandNaturalGasLiquidsNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Oil and Gas, Proved Reserve, Quantity [Line Items]",
        "label": "Oil and Gas, Proved Reserve, Quantity [Line Items]",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "ifrs-full_RetainedEarnings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RetainedEarnings",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_Equity",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Retained earnings",
        "label": "Retained earnings"
       }
      },
      "en": {
       "role": {
        "documentation": "A component of equity representing the entity's cumulative undistributed earnings or deficit."
       }
      }
     },
     "auth_ref": [
      "r383",
      "r390",
      "r391"
     ]
    },
    "ifrs-full_RetainedEarningsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RetainedEarningsMember",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofChangesinEquity",
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Retained earnings",
        "label": "Retained earnings [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a component of equity representing an entity's cumulative undistributed earnings or deficit."
       }
      }
     },
     "auth_ref": [
      "r304",
      "r386"
     ]
    },
    "ifrs-full_RetirementsPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RetirementsPropertyPlantAndEquipment",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "Derecognitions",
        "label": "Retirements, property, plant and equipment"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease in property, plant and equipment resulting from retirements. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r406"
     ]
    },
    "ifrs-full_Revenue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Revenue",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": "ifrs-full_ProfitLossBeforeTax",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Revenue",
        "label": "Revenue"
       }
      }
     },
     "auth_ref": [
      "r87",
      "r148",
      "r178",
      "r182",
      "r188",
      "r189",
      "r191",
      "r330",
      "r354",
      "r384",
      "r385"
     ]
    },
    "ifrs-full_RevenueAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RevenueAbstract",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Segmented product sales",
        "label": "Revenue [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RevenueFromDividends": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RevenueFromDividends",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/InvestmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Dividend income",
        "label": "Dividend income"
       }
      }
     },
     "auth_ref": [
      "r433"
     ]
    },
    "ifrs-full_RevenueFromSaleOfOilAndGasProducts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RevenueFromSaleOfOilAndGasProducts",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": "ifrs-full_Revenue",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/OtherLongTermAssetsScheduleofAssetsLiabilitiesPartnersEquityandEquityLossIncomeDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "Product sales",
        "terseLabel": "Revenue",
        "label": "Revenue from sale of oil and gas products"
       }
      }
     },
     "auth_ref": [
      "r433"
     ]
    },
    "cnq_RevenueNetOfBlendingProductionTransportationAndFeedstockSinceAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "RevenueNetOfBlendingProductionTransportationAndFeedstockSinceAcquisitionDate",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Revenue net of blending, production, transportation and feedstock since acquisition date",
        "label": "Revenue Net Of Blending, Production, Transportation And Feedstock Since Acquisition Date",
        "documentation": "Revenue Net Of Blending, Production, Transportation And Feedstock Since Acquisition Date"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_RevenueNetOfProductionAndTransportationExpenseSinceAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "RevenueNetOfProductionAndTransportationExpenseSinceAcquisitionDate",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Revenue net of production and transportation expense since acquisition date",
        "label": "Revenue Net Of Production and Transportation Expense Since Acquisition Date",
        "documentation": "Revenue Net Of Production and Transportation Expense Since Acquisition Date"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RevenueOfAcquiree": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RevenueOfAcquiree",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Revenue of acquiree since acquisition date",
        "label": "Revenue of acquiree since acquisition date"
       }
      }
     },
     "auth_ref": [
      "r141"
     ]
    },
    "ifrs-full_RevenueOfCombinedEntity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RevenueOfCombinedEntity",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Revenue of combined entity as if combination occurred at beginning of period",
        "label": "Revenue of combined entity as if combination occurred at beginning of period"
       }
      }
     },
     "auth_ref": [
      "r142"
     ]
    },
    "srt_RevisionsOfPreviousQuantityEstimates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "RevisionsOfPreviousQuantityEstimates",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails": {
       "parentTag": "srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Revisions of previous reserve estimates",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Revision of Previous Quantity Estimate",
        "documentation": "Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of revisions of estimated quantity of oil and gas in proved reserves."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "cnq_RevolvingCreditFacilityMaturingFebruary2026Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "RevolvingCreditFacilityMaturingFebruary2026Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Revolving Credit Facility Maturing February 2026",
        "label": "Revolving Credit Facility Maturing February 2026 [Member]",
        "documentation": "Revolving Credit Facility Maturing February 2026"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_RevolvingCreditFacilityMaturingFebruary2027Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "RevolvingCreditFacilityMaturingFebruary2027Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Revolving Credit Facility Maturing February 2027",
        "label": "Revolving Credit Facility Maturing February 2027 [Member]",
        "documentation": "Revolving Credit Facility Maturing February 2027"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_RevolvingCreditFacilityMaturingJune2027Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "RevolvingCreditFacilityMaturingJune2027Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Revolving Syndicated Credit Facility Maturing June 2027",
        "label": "Revolving Credit Facility Maturing June 2027 [Member]",
        "documentation": "Revolving Credit Facility Maturing June 2027"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_RevolvingCreditFacilityMaturingJune2029Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "RevolvingCreditFacilityMaturingJune2029Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Revolving Credit Facility Maturing June 2029",
        "label": "Revolving Credit Facility Maturing June 2029 [Member]",
        "documentation": "Revolving Credit Facility Maturing June 2029"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_RevolvingSyndicatedCreditFacilityMaturingJune2027Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "RevolvingSyndicatedCreditFacilityMaturingJune2027Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Revolving Syndicated Credit Facility Maturing June 2027",
        "label": "Revolving Syndicated Credit Facility Maturing June 2027 [Member]",
        "documentation": "Revolving Syndicated Credit Facility Maturing June 2027"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_RevolvingSyndicatedCreditFacilityMaturingJune2028Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "RevolvingSyndicatedCreditFacilityMaturingJune2028Member",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Revolving Syndicated Credit Facility Maturing June 2028",
        "label": "Revolving Syndicated Credit Facility Maturing June 2028 [Member]",
        "documentation": "Revolving Syndicated Credit Facility Maturing June 2028"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_RevolvingSyndicatedCreditFacilityMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "RevolvingSyndicatedCreditFacilityMember",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Revolving Syndicated Credit Facility",
        "label": "Revolving Syndicated Credit Facility [Member]",
        "documentation": "Revolving Syndicated Credit Facility"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RightofuseAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RightofuseAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets",
      "http://www.cnrl.com/role/LeasesLeaseAssetsDetails",
      "http://www.cnrl.com/role/LeasesScheduleofLeaseAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Lease assets",
        "periodStartLabel": "Lease assets, beginning balance",
        "periodEndLabel": "Lease assets, ending balance",
        "label": "Right-of-use assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of assets that represent a lessee's right to use an underlying asset for the lease term that do not meet the definition of investment property. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee."
       }
      }
     },
     "auth_ref": [
      "r102",
      "r110",
      "r206"
     ]
    },
    "ifrs-full_RoyaltyExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RoyaltyExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings": {
       "parentTag": "ifrs-full_Revenue",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarnings",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Less: royalties",
        "label": "Royalty expense"
       }
      }
     },
     "auth_ref": [
      "r438"
     ]
    },
    "srt_SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails": {
       "parentTag": "srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Sales of crude oil and natural gas produced, net of production costs",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Sale and Transfer of Oil and Gas Produced",
        "documentation": "Amount of (increase) decrease in standardized measure of discounted future net cash flow as a result of sales and transfers of oil and gas produced."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_ScheduleOfChangesInStandardizedMeasureOfDiscountedFutureNetCashFlowsTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ScheduleOfChangesInStandardizedMeasureOfDiscountedFutureNetCashFlowsTableTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Oil and Gas, Change in Standardized Measure, Discounted Future Net Cash Flow",
        "label": "Oil and Gas, Change in Standardized Measure, Discounted Future Net Cash Flow [Table Text Block]",
        "documentation": "Tabular disclosure of the aggregate change in the standardized measure of discounted future net cash flows relating to proved oil and gas reserves and oil and gas subject to purchases under long-term agreements in which the enterprise participates in the operation of the properties on which oil and gas is located or otherwise serves as the producer."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_ScheduleOfProvedDevelopedAndUndevelopedOilAndGasReserveQuantitiesTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ScheduleOfProvedDevelopedAndUndevelopedOilAndGasReserveQuantitiesTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Schedule of Crude Oil, NGL's and Natural Gas Net Proved Reserve Quantities",
        "label": "Oil and Gas, Proved Reserve, Quantity [Table Text Block]",
        "documentation": "Tabular disclosure of the net quantities of an enterprise's interests in proved developed and undeveloped reserves of (a) crude oil (including condensate and natural gas liquids), (b) natural gas (including coal bed methane), (c) synthetic oil, (d) synthetic gas, and (e) other nonrenewable natural resources that are intended to be upgraded during the period as of the beginning of the period, changes in quantities during the period, and as of the end of the period."
       }
      }
     },
     "auth_ref": [
      "r401"
     ]
    },
    "cnq_ScheduleofTwelveMonthAverageBenchmarkPricesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ScheduleofTwelveMonthAverageBenchmarkPricesTableTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Schedule of Twelve Month Average Benchmark Prices",
        "label": "Schedule of Twelve Month Average Benchmark Prices [Table Text Block]",
        "documentation": "Schedule Of Twelve Month Average Benchmark Prices [Table Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ScotfordAndQuestMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ScotfordAndQuestMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNetAssetsAcquiredandConsiderationExchangedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Scotford and Quest",
        "label": "Scotford And Quest [Member]",
        "documentation": "Scotford And Quest"
       }
      }
     },
     "auth_ref": []
    },
    "dei_Security12bTitle": {
     "xbrltype": "securityTitleItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "Security12bTitle",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Title of 12(b) Security",
        "label": "Title of 12(b) Security",
        "documentation": "Title of a 12(b) registered security."
       }
      }
     },
     "auth_ref": [
      "r393"
     ]
    },
    "dei_SecurityExchangeName": {
     "xbrltype": "edgarExchangeCodeItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "SecurityExchangeName",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Security Exchange Name",
        "label": "Security Exchange Name",
        "documentation": "Name of the Exchange on which a security is registered."
       }
      }
     },
     "auth_ref": [
      "r395"
     ]
    },
    "ifrs-full_SegmentConsolidationItemsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SegmentConsolidationItemsAxis",
     "presentation": [
      "http://www.cnrl.com/role/LeasesScheduleofLeaseAssetsDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SegmentedInformationSegmentedAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Segment consolidation items [axis]",
        "label": "Segment consolidation items [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r181"
     ]
    },
    "ifrs-full_SegmentConsolidationItemsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SegmentConsolidationItemsDomain",
     "presentation": [
      "http://www.cnrl.com/role/LeasesScheduleofLeaseAssetsDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SegmentedInformationSegmentedAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Segment consolidation items [domain]",
        "label": "Segment consolidation items [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Segment consolidation items' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r187"
     ]
    },
    "ifrs-full_SegmentsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SegmentsAxis",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails",
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarningsParenthetical",
      "http://www.cnrl.com/role/ExplorationandEvaluationAssetsDetailedInformationaboutExplorationandEvaluationAssetsDetails",
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails",
      "http://www.cnrl.com/role/LeasesScheduleofLeaseAssetsDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesSegmentedAssetRetirementObligationsDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails",
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SegmentedInformationSegmentedAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Segments [axis]",
        "label": "Segments [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r45",
      "r100",
      "r181",
      "r198",
      "r340",
      "r363"
     ]
    },
    "ifrs-full_SegmentsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SegmentsDomain",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails",
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarningsParenthetical",
      "http://www.cnrl.com/role/ExplorationandEvaluationAssetsDetailedInformationaboutExplorationandEvaluationAssetsDetails",
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails",
      "http://www.cnrl.com/role/LeasesScheduleofLeaseAssetsDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesSegmentedAssetRetirementObligationsDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentNarrativeDetails",
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SegmentedInformationSegmentedAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Segments [domain]",
        "label": "Segments [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all segments of an entity. It also represents the standard value for the 'Segments' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r45",
      "r100",
      "r187",
      "r198",
      "r340",
      "r363"
     ]
    },
    "ifrs-full_SensitivityAnalysisForEachTypeOfMarketRisk": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SensitivityAnalysisForEachTypeOfMarketRisk",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Schedule of Embedded Derivative could be Materially Impacted",
        "label": "Sensitivity analysis for types of market risk [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the sensitivity analysis for types of market risk to which the entity is exposed, showing how profit or loss and equity would have been affected by changes in the relevant risk variable that were reasonably possible at that date. [Refer: Market risk [member]]"
       }
      }
     },
     "auth_ref": [
      "r171"
     ]
    },
    "cnq_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableDollarAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableDollarAmount",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsFinancialInstrumentSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Strengthening of the Canadian dollar by US$0.01",
        "label": "Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Decrease In Risk Variable, Dollar Amount",
        "documentation": "Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Decrease In Risk Variable, Dollar Amount. Positive value indicates an increase; negative value indicates a decrease."
       }
      }
     },
     "auth_ref": []
    },
    "cnq_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableImpactOnNetProfitLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableImpactOnNetProfitLoss",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsFinancialInstrumentSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Increase (decrease) to net earnings",
        "label": "Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Decrease In Risk Variable, Impact On Net Profit (Loss)",
        "documentation": "Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Decrease In Risk Variable, Impact On Net Profit (Loss)"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableImpactOnOtherComprehensiveIncomeLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableImpactOnOtherComprehensiveIncomeLoss",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsFinancialInstrumentSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Increase (decrease) to other comprehensive income",
        "label": "Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Decrease In Risk Variable, Impact On Other Comprehensive Income (Loss)",
        "documentation": "Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Decrease In Risk Variable, Impact On Other Comprehensive Income (Loss)"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariablePercent": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariablePercent",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsFinancialInstrumentSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Decrease interest rate 1%",
        "label": "Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Decrease In Risk Variable, Percent",
        "documentation": "Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Decrease In Risk Variable, Percent"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableDollarAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableDollarAmount",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsFinancialInstrumentSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Weakening of the Canadian dollar by US$0.01",
        "label": "Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Increase In Risk Variable, Dollar Amount",
        "documentation": "Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Increase In Risk Variable, Dollar Amount. Positive value indicates an increase; negative value indicates a decrease."
       }
      }
     },
     "auth_ref": []
    },
    "cnq_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnFairValue",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsPriceandDiscountRateSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "Fair value \u2013 increase/(decrease)",
        "label": "Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Increase In Risk Variable, Impact On Fair Value",
        "documentation": "Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Increase In Risk Variable, Impact On Fair Value"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnNetProfitLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnNetProfitLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsFinancialInstrumentSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Increase (decrease) to net earnings",
        "label": "Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Increase In Risk Variable, Impact On Net Profit (Loss)",
        "documentation": "Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Increase In Risk Variable, Impact On Net Profit (Loss)"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnOtherComprehensiveIncomeLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnOtherComprehensiveIncomeLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsFinancialInstrumentSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Increase (decrease) to other comprehensive income",
        "label": "Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Increase In Risk Variable, Impact On Other Comprehensive Income (Loss)",
        "documentation": "Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Increase In Risk Variable, Impact On Other Comprehensive Income (Loss)"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariablePercent": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariablePercent",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsFinancialInstrumentSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Increase interest rate 1%",
        "label": "Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Increase In Risk Variable, Percent",
        "documentation": "Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Increase In Risk Variable, Percent"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_SeriesABondsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "SeriesABondsMember",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Series A Bonds",
        "label": "Series A Bonds [Member]",
        "documentation": "Series A Bonds"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_SeriesPBondsDueJune2034Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "SeriesPBondsDueJune2034Member",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Series P Bonds Due June 2034",
        "label": "Series P Bonds Due June 2034 [Member]",
        "documentation": "Series P Bonds Due June 2034"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_SeriesQBondsDueJune2054Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "SeriesQBondsDueJune2054Member",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Series Q Bonds Due June 2054",
        "label": "Series Q Bonds Due June 2054 [Member]",
        "documentation": "Series Q Bonds Due June 2054"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriod1": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriod1",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Expiration term",
        "label": "Share-Based Compensation Arrangement By Share-Based Payment Award, Expiration Period1",
        "documentation": "Share-based Compensation Arrangement By Share-based Payment Award Expiration Period1"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ShareBasedCompensationArrangementbySharebasedPaymentAwardAwardVestingPeriod2": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ShareBasedCompensationArrangementbySharebasedPaymentAwardAwardVestingPeriod2",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails",
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Vesting term (in years)",
        "label": "Share-Based Compensation Arrangement by Share-based Payment Award, Award Vesting Period2",
        "documentation": "Share-Based Compensation Arrangement by Share-based Payment Award, Award Vesting Period2"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ShareCapitalReservesAndOtherEquityInterestAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ShareCapitalReservesAndOtherEquityInterestAbstract",
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Share Capital, Reserves And Other Equity Interest [Abstract]",
        "label": "Share Capital, Reserves And Other Equity Interest [Abstract]",
        "documentation": "Share Capital, Reserves And Other Equity Interest [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ShareOptionsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ShareOptionsMember",
     "presentation": [
      "http://www.cnrl.com/role/NetEarningsPerCommonShareNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Stock options",
        "label": "Share options [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for share options."
       }
      }
     },
     "auth_ref": [
      "r409"
     ]
    },
    "cnq_SharebasedCompensationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "SharebasedCompensationMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMovementsinDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Share-based compensation",
        "label": "Share-based Compensation [Member]",
        "documentation": "Share-based Compensation [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_ShortTermDemandOperatingFacilityMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "ShortTermDemandOperatingFacilityMember",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Short term demand operating facility",
        "label": "Short Term Demand Operating Facility [Member]",
        "documentation": "Short Term Demand Operating Facility"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ShorttermBorrowings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ShorttermBorrowings",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails": {
       "parentTag": "ifrs-full_Borrowings",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Less: current portion of commercial paper",
        "label": "Current borrowings"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current borrowings. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r435"
     ]
    },
    "ifrs-full_ShorttermProvisionForDecommissioningRestorationAndRehabilitationCosts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ShorttermProvisionForDecommissioningRestorationAndRehabilitationCosts",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails": {
       "parentTag": "ifrs-full_ProvisionForDecommissioningRestorationAndRehabilitationCosts",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesAssetRetirementObligationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Less: current portion",
        "label": "Current provision for decommissioning, restoration and rehabilitation costs"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current provision for decommissioning, restoration and rehabilitation costs. [Refer: Provision for decommissioning, restoration and rehabilitation costs]"
       }
      }
     },
     "auth_ref": [
      "r342",
      "r343"
     ]
    },
    "ifrs-full_SignificantInvestmentsInSubsidiariesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SignificantInvestmentsInSubsidiariesAxis",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Subsidiaries [axis]",
        "label": "Subsidiaries [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r37",
      "r39",
      "r92",
      "r290"
     ]
    },
    "ifrs-full_SignificantInvestmentsInSubsidiariesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SignificantInvestmentsInSubsidiariesDomain",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Subsidiaries [domain]",
        "label": "Subsidiaries [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Subsidiaries' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r37",
      "r39",
      "r92",
      "r290"
     ]
    },
    "srt_StandardizedMeasureOfDiscountedFutureCashFlowsRelatingToProvedReservesDisclosureTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "StandardizedMeasureOfDiscountedFutureCashFlowsRelatingToProvedReservesDisclosureTextBlock",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow [Table Text Block]",
        "documentation": "Tabular disclosure of the future net cash flows relating to proved oil and gas reserves and oil and gas subject to purchase under long-term agreements in which the enterprise participates in the operation of the properties on which the oil and gas is located or otherwise serves as the producer. This information is presented in aggregate and for each geographic area for which reserve quantities are disclosed."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails": {
       "parentTag": "srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease",
       "weight": 1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Changes in production timing and other",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Other",
        "documentation": "Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of changes from other sources."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Net change",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Period Increase (Decrease)",
        "documentation": "Amount of increase (decrease) in standardized measure of discounted future net cash flow relating to proved oil and gas reserves."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails": {
       "parentTag": "srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Accretion of discount",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Accretion of Discount",
        "documentation": "Amount of accretion of discount for the standardized measure of discounted future net cash flow related to proved oil and gas reserves."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "srt_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedFutureNetCashFlowsRelatingtoProvedCrudeOilandNaturalGasReservesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedSourcesofChangeintheStandardizedMeasureofDiscountedFutureNetCashFlowsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "totalLabel": "Standardized measure of future net cash flows (1)",
        "periodStartLabel": "Balance \u2013 beginning of year",
        "periodEndLabel": "Balance \u2013 end of year",
        "label": "Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Future Net Cash Flow, after Discount",
        "documentation": "Amount, after discount, future accumulated cash outflow for development and production costs, and future income tax expense, of estimated future accumulated cash inflow for proved oil and gas reserves."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "ifrs-full_StatementOfCashFlowsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "StatementOfCashFlowsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Statement of cash flows [abstract]",
        "label": "Statement of cash flows [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_StatementOfCashFlowsAdditionalDisclosuresAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "StatementOfCashFlowsAdditionalDisclosuresAbstract",
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Statement Of Cash Flows, Additional Disclosures [Abstract]",
        "label": "Statement Of Cash Flows, Additional Disclosures [Abstract]",
        "documentation": "Statement Of Cash Flows, Additional Disclosures [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_StatementOfChangesInEquityAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "StatementOfChangesInEquityAbstract",
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Statement of changes in equity [abstract]",
        "label": "Statement of changes in equity [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_StatementOfChangesInEquityLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "StatementOfChangesInEquityLineItems",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofChangesinEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Statement of changes in equity [line items]",
        "label": "Statement of changes in equity [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_StatementOfChangesInEquityTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "StatementOfChangesInEquityTable",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofChangesinEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Statement of changes in equity [table]",
        "label": "Statement of changes in equity [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to changes in equity."
       }
      }
     },
     "auth_ref": [
      "r304"
     ]
    },
    "ifrs-full_StatementOfComprehensiveIncomeAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "StatementOfComprehensiveIncomeAbstract",
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Statement of comprehensive income [abstract]",
        "label": "Statement of comprehensive income [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_StatementOfFinancialPositionAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "StatementOfFinancialPositionAbstract",
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Statement of financial position [abstract]",
        "label": "Statement of financial position [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_StatementOfIFRSCompliance": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "StatementOfIFRSCompliance",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "IFRS Compliance",
        "label": "Statement of IFRS compliance [text block]"
       }
      }
     },
     "auth_ref": [
      "r310"
     ]
    },
    "cnq_StockPurchaseProgramTerm": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "StockPurchaseProgramTerm",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Share repurchase term",
        "label": "Stock Purchase Program, Term",
        "documentation": "Stock Purchase Program, Term"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased1": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased1",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Shares authorized to be repurchased through Normal Course Issuer Bid (in shares)",
        "label": "Stock Repurchase Program, Number Of Shares Authorized To Be Repurchased1",
        "documentation": "Stock Repurchase Program, Number Of Shares Authorized To Be Repurchased1"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_StockRepurchasedAndRetiredDuringPeriodShares1": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "StockRepurchasedAndRetiredDuringPeriodShares1",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails",
      "http://www.cnrl.com/role/ShareCapitalOutstandingCommonSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Purchase of common shares under Normal Course Issuer Bid (In shares)",
        "verboseLabel": "Shares repurchased and retired (in shares)",
        "label": "Stock Repurchased And Retired During Period, Shares 1",
        "documentation": "Stock Repurchased And Retired During Period, Shares 1"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_StockRepurchasedAndRetiredDuringPeriodValue1": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "StockRepurchasedAndRetiredDuringPeriodValue1",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedStatementsofChangesinEquity",
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails",
      "http://www.cnrl.com/role/ShareCapitalOutstandingCommonSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Purchase of common shares under Normal Course Issuer Bid",
        "terseLabel": "Purchase of common shares under normal course issuer bid",
        "label": "Stock Repurchased And Retired During Period, Value 1",
        "documentation": "Stock Repurchased And Retired During Period, Value 1"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_StockRepurchasedDuringPeriodWeightedAveragePricePerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "StockRepurchasedDuringPeriodWeightedAveragePricePerShare",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Weighted average price per share of shares repurchased and retired (in CAD per share)",
        "label": "Stock Repurchased During Period, Weighted Average Price Per Share",
        "documentation": "Stock Repurchased During Period, Weighted Average Price Per Share"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_StockholdersEquityNoteStockSplitConversionRatio1": {
     "xbrltype": "pureItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "StockholdersEquityNoteStockSplitConversionRatio1",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails",
      "http://www.cnrl.com/role/ConsolidatedStatementsofEarningsParenthetical",
      "http://www.cnrl.com/role/NetEarningsPerCommonShareScheduleofBasicandDilutedNetEarningsperCommonShareDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesWeightedAverageAssumptionsusedtoCalculateShareBasedCompensationLiabilityDetails",
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Stock split conversion ratio",
        "label": "Stockholders' Equity Note, Stock Split, Conversion Ratio1",
        "documentation": "Stockholders' Equity Note, Stock Split, Conversion Ratio1"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Subclassifications of assets, liabilities and equities [abstract]",
        "label": "Subclassifications of assets, liabilities and equities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_SupplementaryOilGasInformationLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "SupplementaryOilGasInformationLineItems",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Supplementary Oil &amp; Gas Information [Line Items]",
        "label": "Supplementary Oil &amp; Gas Information [Line Items]",
        "documentation": "[Line Items] for Supplementary Oil &amp; Gas Information [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_SupplementaryOilGasInformationTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "SupplementaryOilGasInformationTable",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedResultsofOperationsfromCrudeOilandNaturalGasProducingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Supplementary Oil &amp; Gas Information [Table]",
        "label": "Supplementary Oil &amp; Gas Information [Table]",
        "documentation": "Supplementary Oil &amp; Gas Information [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_SyndicatedCreditFacilityMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "SyndicatedCreditFacilityMember",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Syndicated Credit Facility",
        "label": "Syndicated Credit Facility [Member]",
        "documentation": "Syndicated Credit Facility [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_SyndicatedCreditFacilityNonRevolvingMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "SyndicatedCreditFacilityNonRevolvingMember",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Syndicated Credit Facility, Non-Revolving",
        "label": "Syndicated Credit Facility, Non-Revolving [Member]",
        "documentation": "Syndicated Credit Facility, Non-Revolving"
       }
      }
     },
     "auth_ref": []
    },
    "srt_SyntheticOilMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "SyntheticOilMember",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Synthetic Crude Oil",
        "label": "Synthetic Oil [Member]",
        "documentation": "Lubricant consisting of chemical compounds that are synthetically made."
       }
      }
     },
     "auth_ref": [
      "r0",
      "r425",
      "r426"
     ]
    },
    "cnq_TaxEffectFromDeferredTaxNotRecognized": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "TaxEffectFromDeferredTaxNotRecognized",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Change in unrecognized capital loss carryforward asset",
        "label": "Tax Effect From Deferred Tax Not Recognized",
        "documentation": "Tax Effect From Deferred Tax Not Recognized"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_TaxEffectOfDeductiblePetroleumRevenueAndOtherTaxesOnCorporateIncomeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "TaxEffectOfDeductiblePetroleumRevenueAndOtherTaxesOnCorporateIncomeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Impact of UK PRT and other taxes on corporate income tax",
        "label": "Tax Effect Of Deductible Petroleum Revenue And Other Taxes On Corporate Income Tax",
        "documentation": "Tax Effect Of Deductible Petroleum Revenue And Other Taxes On Corporate Income Tax"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_TaxEffectOfExerciseOfOptions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "TaxEffectOfExerciseOfOptions",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": -1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Stock options exercised for common shares",
        "label": "Tax Effect Of Exercise Of Options",
        "documentation": "Tax Effect Of Exercise Of Options"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TaxEffectOfForeignTaxRates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TaxEffectOfForeignTaxRates",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Foreign and domestic tax rate differentials",
        "label": "Tax effect of foreign tax rates"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to foreign tax rates. [Refer: Accounting profit]"
       }
      }
     },
     "auth_ref": [
      "r3",
      "r229"
     ]
    },
    "cnq_TaxEffectOfPetroleumRevenueAndOtherTaxes": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "TaxEffectOfPetroleumRevenueAndOtherTaxes",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "UK PRT and other taxes",
        "label": "Tax Effect Of Petroleum Revenue And Other Taxes",
        "documentation": "Tax Effect Of Petroleum Revenue And Other Taxes"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_TaxEffectOfPriorYearIncomeTaxes": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "TaxEffectOfPriorYearIncomeTaxes",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Revisions arising from prior year tax filings",
        "label": "Tax Effect Of Prior Year Income Taxes",
        "documentation": "Tax Effect Of Prior Year Income Taxes"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_TaxEffectOfRevenuesExemptFromTaxationNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "TaxEffectOfRevenuesExemptFromTaxationNet",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": -1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "negatedTerseLabel": "Non-taxable portion of capital losses (gains)",
        "label": "Tax Effect Of Revenues Exempt From Taxation, Net",
        "documentation": "Tax Effect Of Revenues Exempt From Taxation, Net"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TaxExpenseIncomeAtApplicableTaxRate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TaxExpenseIncomeAtApplicableTaxRate",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesScheduleofProvisionForIncomeTaxRateReconciliationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Income tax provision at statutory rate",
        "label": "Tax expense (income) at applicable tax rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The product of the accounting profit multiplied by the applicable tax rate(s). [Refer: Accounting profit; Applicable tax rate]"
       }
      }
     },
     "auth_ref": [
      "r3",
      "r229"
     ]
    },
    "cnq_TaxablePetroleumRevenueTaxForCorporateIncomeTaxRelatedTemporaryDifferencesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "TaxablePetroleumRevenueTaxForCorporateIncomeTaxRelatedTemporaryDifferencesMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMovementsinDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Taxable PRT for corporate income tax",
        "label": "Taxable Petroleum Revenue Tax For Corporate Income Tax Related Temporary Differences [Member]",
        "documentation": "Taxable Petroleum Revenue Tax For Corporate Income Tax Related Temporary Differences"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMovementsinDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Temporary difference, unused tax losses and unused tax credits [axis]",
        "label": "Temporary difference, unused tax losses and unused tax credits [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r8",
      "r234"
     ]
    },
    "ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsDomain",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMovementsinDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Temporary difference, unused tax losses and unused tax credits [domain]",
        "label": "Temporary difference, unused tax losses and unused tax credits [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for temporary differences, unused tax losses and unused tax credits. It also represents the standard value for the 'Temporary difference, unused tax losses and unused tax credits' axis if no other member is used. [Refer: Temporary differences [member]; Unused tax credits [member]; Unused tax losses [member]]"
       }
      }
     },
     "auth_ref": [
      "r8",
      "r234"
     ]
    },
    "srt_TitleOfIndividualAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "TitleOfIndividualAxis",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Title and Position [Axis]",
        "label": "Title and Position [Axis]",
        "documentation": "Information by title and position of individual or group within organization."
       }
      }
     },
     "auth_ref": []
    },
    "srt_TitleOfIndividualWithRelationshipToEntityDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "TitleOfIndividualWithRelationshipToEntityDomain",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Title and Position [Domain]",
        "label": "Title and Position [Domain]",
        "documentation": "Title and position of individual or group within organization."
       }
      }
     },
     "auth_ref": []
    },
    "cnq_TollPayerPercentForOthers": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "TollPayerPercentForOthers",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Toll payer percent for others",
        "label": "Toll Payer Percent For Others",
        "documentation": "Toll Payer Percent For Others"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_TollingPeriodTerm": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "TollingPeriodTerm",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Tolling period term",
        "label": "Tolling Period Term",
        "documentation": "Tolling Period Term"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TopOfRangeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TopOfRangeMember",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails",
      "http://www.cnrl.com/role/CapitalDisclosuresNarrativeDetails",
      "http://www.cnrl.com/role/CriticalAccountingEstimatesandJudgementsDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsEmbeddedDerivativeContractDetails",
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails",
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Top of range",
        "label": "Top of range [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for top of a range."
       }
      }
     },
     "auth_ref": [
      "r69",
      "r99",
      "r119",
      "r133",
      "r224",
      "r355",
      "r356",
      "r424"
     ]
    },
    "cnq_TotalSegmentsAfterIntersegmentEliminationsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "TotalSegmentsAfterIntersegmentEliminationsMember",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Total Segments",
        "label": "Total Segments, After Intersegment Eliminations [Member]",
        "documentation": "Total Segments, After Intersegment Eliminations [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TradeAndOtherCurrentPayablesToTradeSuppliers",
     "crdr": "credit",
     "calculation": {
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets": {
       "parentTag": "ifrs-full_CurrentLiabilities",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/ConsolidatedBalanceSheets",
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Accounts payable",
        "label": "Current trade payables"
       }
      },
      "en": {
       "role": {
        "documentation": "The current amount of payment due to suppliers for goods and services used in entity's business. [Refer: Current liabilities; Trade payables]"
       }
      }
     },
     "auth_ref": [
      "r388",
      "r436"
     ]
    },
    "dei_TradingSymbol": {
     "xbrltype": "tradingSymbolItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "TradingSymbol",
     "presentation": [
      "http://www.cnrl.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Trading Symbol",
        "label": "Trading Symbol",
        "documentation": "Trading symbol of an instrument as listed on an exchange."
       }
      }
     },
     "auth_ref": []
    },
    "cnq_TransMountainExpressPipelineMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "TransMountainExpressPipelineMember",
     "presentation": [
      "http://www.cnrl.com/role/CommitmentsandContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Trans Mountain Express Pipeline",
        "label": "Trans Mountain Express Pipeline [Member]",
        "documentation": "Trans Mountain Express Pipeline"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_TransportExpenseOfCombinedEntityAsIfCombinationOccurredAtBeginningOfPeriod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "TransportExpenseOfCombinedEntityAsIfCombinationOccurredAtBeginningOfPeriod",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentASOPAssetSwapTransactionNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Transport expense",
        "label": "Transport Expense Of Combined Entity As If Combination Occurred At Beginning Of Period",
        "documentation": "Transport Expense Of Combined Entity As If Combination Occurred At Beginning Of Period"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_TwelveMonthAverageBenchmarkPriceDollarsPerBbl": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "TwelveMonthAverageBenchmarkPriceDollarsPerBbl",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Twelve month average benchmark price dollars per bbl",
        "label": "Twelve Month Average Benchmark Price (Dollars Per Bbl)",
        "documentation": "Twelve Month Average Benchmark Price (Dollars Per Bbl)"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_TwelveMonthAverageBenchmarkPriceDollarsPerMMBtu": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "TwelveMonthAverageBenchmarkPriceDollarsPerMMBtu",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Twelve month average benchmark price dollars per MMBtu",
        "label": "Twelve Month Average Benchmark Price (Dollars Per MMBtu)",
        "documentation": "Twelve Month Average Benchmark Price (Dollars Per MMBtu)"
       }
      }
     },
     "auth_ref": []
    },
    "srt_TypeOfReserveDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "TypeOfReserveDomain",
     "presentation": [
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedNaturalGasNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedOilandNaturalGasLiquidsNarrativeDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedNaturalGasReserveQuantitiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedProvedandProvedDevelopedOilandNaturalGasLiquidsNetofRoyaltiesDetails",
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Type of Reserve [Domain]",
        "label": "Type of Reserve [Domain]",
        "documentation": "The type of petroleum reserve being disclosed: oil, natural gas, natural gas liquids, synthetic oil, synthetic gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas with separate disclosures for consolidated entities and equity method investments."
       }
      }
     },
     "auth_ref": [
      "r425",
      "r426"
     ]
    },
    "ifrs-full_TypesOfAntidilutiveInstrumentsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfAntidilutiveInstrumentsAxis",
     "presentation": [
      "http://www.cnrl.com/role/NetEarningsPerCommonShareNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Types of antidilutive instruments [axis]",
        "label": "Types of antidilutive instruments [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r43"
     ]
    },
    "ifrs-full_TypesOfAntidilutiveInstrumentsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfAntidilutiveInstrumentsDomain",
     "presentation": [
      "http://www.cnrl.com/role/NetEarningsPerCommonShareNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Types of antidilutive instruments [domain]",
        "label": "Types of antidilutive instruments [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for antidilutive instruments. Instruments are antidilutive when their conversion to ordinary shares would increase earnings per share or decrease loss per share from continuing operations. The calculation of diluted earnings per share does not assume conversion, exercise, or other issue of potential ordinary shares that would have an antidilutive effect on earnings per share. It also represents the standard value for the \u2018Types of antidilutive instruments' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r43"
     ]
    },
    "ifrs-full_TypesOfContractsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfContractsAxis",
     "presentation": [
      "http://www.cnrl.com/role/LeasesLeaseAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Types of contracts [axis]",
        "label": "Types of contracts [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r359",
      "r361",
      "r379"
     ]
    },
    "ifrs-full_TypesOfContractsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfContractsDomain",
     "presentation": [
      "http://www.cnrl.com/role/LeasesLeaseAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Types of contracts [domain]",
        "label": "Types of contracts [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all types of contracts with customers. It also represents the standard value for the 'Types of contracts' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r359",
      "r361",
      "r379"
     ]
    },
    "ifrs-full_TypesOfHedgesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfHedgesAxis",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsForeignCurrencyExchangeRateRiskManagementNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Types of hedges [axis]",
        "label": "Types of hedges [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r155",
      "r156",
      "r159",
      "r280",
      "r281",
      "r284"
     ]
    },
    "ifrs-full_TypesOfHedgesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfHedgesDomain",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsForeignCurrencyExchangeRateRiskManagementNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Types of hedges [domain]",
        "label": "Types of hedges [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all types of hedges. It also represents the standard value for the 'Types of hedges' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r155",
      "r156",
      "r159",
      "r280",
      "r281",
      "r284"
     ]
    },
    "ifrs-full_TypesOfInterestRatesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfInterestRatesAxis",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandFairValuesofFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Types of interest rates [axis]",
        "label": "Types of interest rates [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r423"
     ]
    },
    "ifrs-full_TypesOfInterestRatesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfInterestRatesDomain",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCarryingAmountsandFairValuesofFinancialInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Types of interest rates [domain]",
        "label": "Types of interest rates [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all types of interest rates. It also represents the standard value for the 'Types of interest rates' axis if no other member is used. [Refer: Interest rate risk [member]]"
       }
      }
     },
     "auth_ref": [
      "r423"
     ]
    },
    "ifrs-full_TypesOfRisksAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfRisksAxis",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCounterpartyCreditRiskManagementNarrativeDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsFinancialInstrumentSensitivitiesDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsForeignCurrencyExchangeRateRiskManagementNarrativeDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsPriceandDiscountRateSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Types of risks [axis]",
        "label": "Types of risks [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r28",
      "r120",
      "r121",
      "r122",
      "r124",
      "r153",
      "r163",
      "r164",
      "r244"
     ]
    },
    "ifrs-full_TypesOfRisksDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfRisksDomain",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsCounterpartyCreditRiskManagementNarrativeDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsFinancialInstrumentSensitivitiesDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsForeignCurrencyExchangeRateRiskManagementNarrativeDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsMaturityDatesforFinancialLiabilitiesDetails",
      "http://www.cnrl.com/role/FinancialInstrumentsPriceandDiscountRateSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Types of risks [domain]",
        "label": "Types of risks [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all types of risks. It also represents the standard value for the 'Types of risks' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r28",
      "r120",
      "r121",
      "r122",
      "r124",
      "r153",
      "r163",
      "r164",
      "r244"
     ]
    },
    "ifrs-full_TypesOfSharebasedPaymentArrangementsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfSharebasedPaymentArrangementsAxis",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesNarrativeDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesWeightedAverageAssumptionsusedtoCalculateShareBasedCompensationLiabilityDetails",
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Types of share-based payment arrangements [axis]",
        "label": "Types of share-based payment arrangements [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r134",
      "r273"
     ]
    },
    "ifrs-full_TypesOfSharebasedPaymentArrangementsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfSharebasedPaymentArrangementsDomain",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesNarrativeDetails",
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesWeightedAverageAssumptionsusedtoCalculateShareBasedCompensationLiabilityDetails",
      "http://www.cnrl.com/role/ShareCapitalNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Types of share-based payment arrangements",
        "label": "Types of share-based payment arrangements [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for an agreement between the entity or another group entity or any shareholder of the group entity and another party (including an employee) that entitles the other party to receive (a) cash or other assets of the entity for amounts that are based on the price (or value) of equity instruments (including shares or share options) of the entity or another group entity; or (b) equity instruments (including shares or share options) of the entity or another group entity, provided that the specified vesting conditions, if any, are met. It also represents the standard value for the 'Types of share-based payment arrangements' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r134",
      "r273"
     ]
    },
    "cnq_US0.10MMBtuDecreaseJKMPriceRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "US0.10MMBtuDecreaseJKMPriceRiskMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsPriceandDiscountRateSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "US$0.1/MMBtu decrease",
        "label": "US$0.10/MMBtu Decrease, JKM Price Risk [Member]",
        "documentation": "US$0.10/MMBtu Decrease, JKM Price Risk"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_US0.10MMBtuIncreaseJKMPriceRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "US0.10MMBtuIncreaseJKMPriceRiskMember",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsPriceandDiscountRateSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "US$0.1/MMBtu increase",
        "label": "US$0.10/MMBtu Increase, JKM Price Risk [Member]",
        "documentation": "US$0.10/MMBtu Increase, JKM Price Risk"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_USCreditFacilitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "USCreditFacilitiesMember",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Bank credit facilities (December 31, 2025 \u2013 US$2,860 million; December 31, 2024 \u2013 US$3,393 million)",
        "label": "US Credit Facilities [Member]",
        "documentation": "US Credit Facilities [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "currency_USD": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/currency/2025",
     "localname": "USD",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "USD",
        "label": "United States of America, Dollars"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_USDollarDenominatedDebtMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "USDollarDenominatedDebtMember",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtSummaryofLongtermDebtDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "US dollar debt securities",
        "label": "US Dollar Denominated Debt [Member]",
        "documentation": "US Dollar Denominated Debt"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_UnallocatedAmountsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "UnallocatedAmountsMember",
     "presentation": [
      "http://www.cnrl.com/role/LeasesScheduleofLeaseAssetsDetails",
      "http://www.cnrl.com/role/PropertyPlantandEquipmentDetailedInformationAboutPropertyPlantandEquipmentDetails",
      "http://www.cnrl.com/role/SegmentedInformationCapitalExpendituresDetails",
      "http://www.cnrl.com/role/SegmentedInformationOperatingSegmentsEarningsDetails",
      "http://www.cnrl.com/role/SegmentedInformationSegmentedAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Head Office",
        "verboseLabel": "Non-segmented",
        "label": "Unallocated amounts [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for items that have not been allocated to operating segments."
       }
      }
     },
     "auth_ref": [
      "r375",
      "r376"
     ]
    },
    "ifrs-full_UndrawnBorrowingFacilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "UndrawnBorrowingFacilities",
     "crdr": "credit",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Undrawn borrowing facilities",
        "label": "Undrawn borrowing facilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of undrawn borrowing facilities that may be available for future operating activities and to settle capital commitments. [Refer: Capital commitments]"
       }
      }
     },
     "auth_ref": [
      "r351"
     ]
    },
    "ifrs-full_UnobservableInputsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "UnobservableInputsAxis",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsPriceandDiscountRateSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Unobservable inputs [axis]",
        "label": "Unobservable inputs [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r96",
      "r421"
     ]
    },
    "ifrs-full_UnobservableInputsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "UnobservableInputsDomain",
     "presentation": [
      "http://www.cnrl.com/role/FinancialInstrumentsPriceandDiscountRateSensitivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Unobservable inputs [domain]",
        "label": "Unobservable inputs [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all the unobservable inputs. It also represents the standard value for the 'Unobservable inputs' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r96",
      "r421"
     ]
    },
    "ifrs-full_UnrealisedForeignExchangeGainsLossesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "UnrealisedForeignExchangeGainsLossesMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMovementsinDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "Unrealized foreign exchange loss on long-term debt",
        "terseLabel": "Unrealized foreign exchange on long-term debt",
        "label": "Unrealised foreign exchange gains (losses) [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for gains (losses) resulting from changes in foreign exchange rates which have not yet been realised."
       }
      }
     },
     "auth_ref": [
      "r402"
     ]
    },
    "cnq_UnrealisedRiskManagementActivitiesRelatedTemporaryDifferencesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "UnrealisedRiskManagementActivitiesRelatedTemporaryDifferencesMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMovementsinDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Unrealized risk management activities",
        "label": "Unrealised Risk Management Activities Related Temporary Differences [Member]",
        "documentation": "Unrealised Risk Management Activities Related Temporary Differences [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_UnrecognisedShareOfLossesOfJointVentures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "UnrecognisedShareOfLossesOfJointVentures",
     "crdr": "debit",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermAssetsNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Unrecognised share of losses of joint ventures",
        "label": "Unrecognised share of losses of joint ventures"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of the unrecognised share of joint ventures' losses if the entity has stopped recognising its share of losses when applying the equity method. [Refer: Total for all joint ventures [member]]"
       }
      }
     },
     "auth_ref": [
      "r81"
     ]
    },
    "ifrs-full_UnusedTaxCreditsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "UnusedTaxCreditsMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Unused tax credits",
        "label": "Unused tax credits [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for tax credits that have been received and are carried forward for use against future taxable profit."
       }
      }
     },
     "auth_ref": [
      "r8",
      "r234"
     ]
    },
    "ifrs-full_UnusedTaxLossesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "UnusedTaxLossesMember",
     "presentation": [
      "http://www.cnrl.com/role/IncomeTaxesNarrativeDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMajorTemporaryDifferencesDetails",
      "http://www.cnrl.com/role/IncomeTaxesSummaryofMovementsinDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "verboseLabel": "Unused tax losses",
        "terseLabel": "Loss carryforwards",
        "label": "Unused tax losses [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for tax losses that have been incurred and are carried forward for use against future taxable profit."
       }
      }
     },
     "auth_ref": [
      "r8",
      "r234"
     ]
    },
    "cnq_UsefulLivesOrDepreciationRatesPropertyPlantAndEquipmentPeriod": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "UsefulLivesOrDepreciationRatesPropertyPlantAndEquipmentPeriod",
     "presentation": [
      "http://www.cnrl.com/role/AccountingPoliciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Estimated useful life (in years)",
        "label": "Useful Lives Or Depreciation Rates, Property, Plant And Equipment, Period",
        "documentation": "Useful Lives Or Depreciation Rates, Property, Plant And Equipment, Period"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_WeightedAverageDiscountRateUsedInCurrentMeasurementOfProvisionForDecommissioningRestorationAndRehabilitationCosts": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "WeightedAverageDiscountRateUsedInCurrentMeasurementOfProvisionForDecommissioningRestorationAndRehabilitationCosts",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Weighted average discount rate",
        "label": "Weighted Average Discount Rate Used In Current Measurement Of Provision For Decommissioning, Restoration And Rehabilitation Costs",
        "documentation": "Weighted Average Discount Rate Used In Current Measurement Of Provision For Decommissioning, Restoration And Rehabilitation Costs"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement2019": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement2019",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails",
      "http://www.cnrl.com/role/ShareCapitalStockOptionActivityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Weighted average exercise price, options exercisable (in CAD per share)",
        "verboseLabel": "Weighted average exercise price (in CAD per share)",
        "label": "Weighted average exercise price of share options exercisable in share-based payment arrangement"
       }
      },
      "en": {
       "role": {
        "documentation": "The weighted average exercise price of share options exercisable in a share-based payment arrangement. [Refer: Weighted average [member]]"
       }
      }
     },
     "auth_ref": [
      "r131",
      "r271"
     ]
    },
    "ifrs-full_WeightedAverageExercisePriceOfShareOptionsExercisedInSharebasedPaymentArrangement2019": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "WeightedAverageExercisePriceOfShareOptionsExercisedInSharebasedPaymentArrangement2019",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalStockOptionActivityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Weighted average exercise price, options exercised (in CAD per share)",
        "label": "Weighted average exercise price of share options exercised in share-based payment arrangement"
       }
      },
      "en": {
       "role": {
        "documentation": "The weighted average exercise price of share options exercised in a share-based payment arrangement. [Refer: Weighted average [member]]"
       }
      }
     },
     "auth_ref": [
      "r129",
      "r269"
     ]
    },
    "ifrs-full_WeightedAverageExercisePriceOfShareOptionsForfeitedInSharebasedPaymentArrangement2019": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "WeightedAverageExercisePriceOfShareOptionsForfeitedInSharebasedPaymentArrangement2019",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalStockOptionActivityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Weighted average exercise price, options forfeited (in CAD per share)",
        "label": "Weighted average exercise price of share options forfeited in share-based payment arrangement"
       }
      },
      "en": {
       "role": {
        "documentation": "The weighted average exercise price of share options forfeited in a share-based payment arrangement. [Refer: Weighted average [member]]"
       }
      }
     },
     "auth_ref": [
      "r128",
      "r268"
     ]
    },
    "ifrs-full_WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement2019": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement2019",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalStockOptionActivityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Weighted average exercise price, options granted (in CAD per share)",
        "label": "Weighted average exercise price of share options granted in share-based payment arrangement"
       }
      },
      "en": {
       "role": {
        "documentation": "The weighted average exercise price of share options granted in a share-based payment arrangement. [Refer: Weighted average [member]]"
       }
      }
     },
     "auth_ref": [
      "r127",
      "r267"
     ]
    },
    "ifrs-full_WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement2019": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement2019",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails",
      "http://www.cnrl.com/role/ShareCapitalStockOptionActivityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "periodStartLabel": "Weighted average exercise price, options outstanding - beginning of year (in CAD per share)",
        "periodEndLabel": "Weighted average exercise price, options outstanding - beginning of year (in CAD per share)",
        "terseLabel": "Weighted average exercise price (in CAD per share)",
        "label": "Weighted average exercise price of share options outstanding in share-based payment arrangement"
       }
      },
      "en": {
       "role": {
        "documentation": "The weighted average exercise price of share options outstanding in a share-based payment arrangement. [Refer: Weighted average [member]]"
       }
      }
     },
     "auth_ref": [
      "r126",
      "r130",
      "r266",
      "r270"
     ]
    },
    "cnq_WeightedAverageExercisePriceOfShareOptionsSurrenderedForCashInSharebasedPaymentArrangement": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "WeightedAverageExercisePriceOfShareOptionsSurrenderedForCashInSharebasedPaymentArrangement",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalStockOptionActivityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Weighted average exercise price, options surrendered for cash settlement (in CAD per share)",
        "label": "Weighted Average Exercise Price Of Share Options Surrendered For Cash In Share-based Payment Arrangement",
        "documentation": "Weighted Average Exercise Price Of Share Options Surrendered (decrease) For Cash In Share-based Payment Arrangement"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_WeightedAverageFairValueAtMeasurementDateShareOptionsGrantedPerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "WeightedAverageFairValueAtMeasurementDateShareOptionsGrantedPerShare",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesWeightedAverageAssumptionsusedtoCalculateShareBasedCompensationLiabilityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Fair value",
        "label": "Weighted Average Fair Value At Measurement Date, Share Options Granted, Per Share",
        "documentation": "Weighted Average Fair Value At Measurement Date, Share Options Granted, Per Share"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_WeightedAverageMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "WeightedAverageMember",
     "presentation": [
      "http://www.cnrl.com/role/LongTermDebtNarrativeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Weighted average",
        "label": "Weighted average [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for an average in which each quantity to be averaged is assigned a weight that determines the relative effect of each quantity on the average."
       }
      }
     },
     "auth_ref": [
      "r99",
      "r119",
      "r355",
      "r356",
      "r424"
     ]
    },
    "ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019": {
     "xbrltype": "durationItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019",
     "presentation": [
      "http://www.cnrl.com/role/ShareCapitalRangeofExercisePricesofStockOptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Weighted average remaining term (years)",
        "label": "Weighted average remaining contractual life of outstanding share options"
       }
      },
      "en": {
       "role": {
        "documentation": "The weighted average remaining contractual life of outstanding share options. [Refer: Weighted average [member]]"
       }
      }
     },
     "auth_ref": [
      "r133"
     ]
    },
    "ifrs-full_WeightedAverageSharePriceShareOptionsGranted2019": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "WeightedAverageSharePriceShareOptionsGranted2019",
     "presentation": [
      "http://www.cnrl.com/role/OtherLongTermLiabilitiesWeightedAverageAssumptionsusedtoCalculateShareBasedCompensationLiabilityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Share price",
        "label": "Weighted average share price, share options granted"
       }
      },
      "en": {
       "role": {
        "documentation": "The weighted average share price used as input to the option pricing model to calculate the fair value of share options granted. [Refer: Option pricing model [member]; Weighted average [member]]"
       }
      }
     },
     "auth_ref": [
      "r135"
     ]
    },
    "ifrs-full_WeightedAverageShares": {
     "xbrltype": "sharesItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "WeightedAverageShares",
     "calculation": {
      "http://www.cnrl.com/role/NetEarningsPerCommonShareScheduleofBasicandDilutedNetEarningsperCommonShareDetails": {
       "parentTag": "ifrs-full_AdjustedWeightedAverageShares",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/NetEarningsPerCommonShareScheduleofBasicandDilutedNetEarningsperCommonShareDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Weighted average common shares outstanding \u2013 basic (thousands of shares) (in shares)",
        "label": "Weighted average number of ordinary shares used in calculating basic earnings per share"
       }
      },
      "en": {
       "role": {
        "documentation": "The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor."
       }
      }
     },
     "auth_ref": [
      "r42"
     ]
    },
    "ifrs-full_WeightedAverageSharesAndAdjustedWeightedAverageSharesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "WeightedAverageSharesAndAdjustedWeightedAverageSharesAbstract",
     "presentation": [
      "http://www.cnrl.com/role/NetEarningsPerCommonShareScheduleofBasicandDilutedNetEarningsperCommonShareDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Weighted average ordinary shares and adjusted weighted average ordinary shares [abstract]",
        "label": "Weighted average ordinary shares used in calculating basic and diluted earnings per share [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_WestTexasIntermediateCushingOklahomaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "WestTexasIntermediateCushingOklahomaMember",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "WTI",
        "label": "West Texas Intermediate, Cushing Oklahoma [Member]",
        "documentation": "West Texas Intermediate, Cushing Oklahoma [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_WesternCanadianSelectMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "WesternCanadianSelectMember",
     "presentation": [
      "http://www.cnrl.com/role/SupplementaryOilAndGasInformationUnauditedTwelveMonthAverageBenchmarkPricesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "WCS",
        "label": "Western Canadian Select [Member]",
        "documentation": "Western Canadian Select [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "cnq_WorkingCapitalAssetsRecognizedAsOfAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.cnrl.com/20251231",
     "localname": "WorkingCapitalAssetsRecognizedAsOfAcquisitionDate",
     "crdr": "debit",
     "calculation": {
      "http://www.cnrl.com/role/PropertyPlantandEquipmentSummaryofNetAssetsAcquiredDetails": {
       "parentTag": "ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.cnrl.com/role/PropertyPlantandEquipmentSummaryofNetAssetsAcquiredDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "terseLabel": "Working capital",
        "label": "Working Capital Assets Recognized As Of Acquisition Date",
        "documentation": "Working Capital Assets Recognized As Of Acquisition Date"
       }
      }
     },
     "auth_ref": []
    }
   }
  }
 },
 "std_ref": {
  "r0": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Form 20-F",
   "Number": "Part II",
   "Section": "Item 18",
   "Subparagraph": "(Instruction 2)",
   "Publisher": "SEC"
  },
  "r1": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_79&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r2": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "81",
   "Subparagraph": "ab",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81_ab&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r3": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "81",
   "Subparagraph": "c",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81_c_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r4": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "81",
   "Subparagraph": "c",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81_c_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r5": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "81",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r6": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "81",
   "Subparagraph": "g",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81_g_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r7": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "81",
   "Subparagraph": "g",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81_g_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r8": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "81",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81_g&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r9": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IAS12_g79-88_TI",
   "URIDate": "2025-03-27"
  },
  "r10": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "73",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r11": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "73",
   "Subparagraph": "e",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73_e_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r12": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "73",
   "Subparagraph": "e",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73_e_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r13": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "73",
   "Subparagraph": "e",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73_e_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r14": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "73",
   "Subparagraph": "e",
   "Clause": "vii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73_e_vii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r15": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "73",
   "Subparagraph": "e",
   "Clause": "viii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73_e_viii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r16": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "73",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r17": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "73",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r18": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "75",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_75_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r19": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "75",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_75_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r20": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IAS16_g73-79_TI",
   "URIDate": "2025-03-27"
  },
  "r21": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "142",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_142&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r22": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "36",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=2&code=ifrs-tx-2025-en-r&anchor=para_36_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r23": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "36",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=2&code=ifrs-tx-2025-en-r&anchor=para_36_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r24": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "36",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=2&code=ifrs-tx-2025-en-r&anchor=para_36_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r25": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=2&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IAS02_g36-39_TI",
   "URIDate": "2025-03-27"
  },
  "r26": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "20",
   "IssueDate": "2025-01-01",
   "Paragraph": "39",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=20&code=ifrs-tx-2025-en-r&anchor=para_39_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r27": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "21",
   "IssueDate": "2025-01-01",
   "Paragraph": "52",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=21&code=ifrs-tx-2025-en-r&anchor=para_52_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r28": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "21",
   "IssueDate": "2025-01-01",
   "Paragraph": "A19",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=21&code=ifrs-tx-2025-en-r&anchor=para_A19_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r29": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2025-01-01",
   "Paragraph": "17",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2025-en-r&anchor=para_17_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r30": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2025-01-01",
   "Paragraph": "17",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2025-en-r&anchor=para_17&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r31": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2025-01-01",
   "Paragraph": "18",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2025-en-r&anchor=para_18&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r32": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2025-01-01",
   "Paragraph": "19",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2025-en-r&anchor=para_19&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r33": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "26",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "Subparagraph": "b",
   "Clause": "vi",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2025-en-r&anchor=para_35_b_vi&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r34": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "26",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "Subparagraph": "b",
   "Clause": "viii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2025-en-r&anchor=para_35_b_viii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r35": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2025-01-01",
   "Paragraph": "10",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_10&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r36": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2025-01-01",
   "Paragraph": "16",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_16_b_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r37": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2025-01-01",
   "Paragraph": "16",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_16_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r38": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2025-01-01",
   "Paragraph": "17",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_17_b_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r39": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2025-01-01",
   "Paragraph": "17",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_17_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r40": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2025-01-01",
   "Paragraph": "66",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2025-en-r&anchor=para_66&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r41": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2025-01-01",
   "Paragraph": "67",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2025-en-r&anchor=para_67&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r42": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2025-01-01",
   "Paragraph": "70",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2025-en-r&anchor=para_70_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r43": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2025-01-01",
   "Paragraph": "70",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2025-en-r&anchor=para_70_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r44": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2025-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IAS33_g70-73A_TI",
   "URIDate": "2025-03-27"
  },
  "r45": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2025-01-01",
   "Paragraph": "130",
   "Subparagraph": "d",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_130_d_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r46": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2025-01-01",
   "Paragraph": "130",
   "Subparagraph": "f",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_130_f_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r47": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2025-01-01",
   "Paragraph": "130",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_130_g&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r48": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2025-01-01",
   "Paragraph": "134",
   "Subparagraph": "d",
   "Clause": "v",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_134_d_v&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r49": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2025-01-01",
   "Paragraph": "134",
   "Subparagraph": "e",
   "Clause": "iiA",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_134_e_iiA&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r50": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2025-01-01",
   "Paragraph": "134",
   "Subparagraph": "e",
   "Clause": "v",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_134_e_v&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r51": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Paragraph": "84",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_84_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r52": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Paragraph": "84",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_84_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r53": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Paragraph": "84",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_84&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r54": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Paragraph": "86",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_86&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r55": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Paragraph": "88",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_88&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r56": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2025-01-01",
   "Paragraph": "118",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_118_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r57": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2025-01-01",
   "Paragraph": "118",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_118_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r58": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "39",
   "IssueDate": "2025-01-01",
   "Paragraph": "86",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=39&code=ifrs-tx-2025-en-r&anchor=para_86_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r59": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2025-01-01",
   "Paragraph": "76",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_76&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r60": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_79_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r61": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_79_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r62": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "41",
   "IssueDate": "2025-01-01",
   "Paragraph": "50",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=41&code=ifrs-tx-2025-en-r&anchor=para_50&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r63": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "41",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=41&code=ifrs-tx-2025-en-r&anchor=para_54_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r64": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "10",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_10&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r65": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "14",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_14&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r66": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "31",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_31&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r67": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r68": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "44B",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_44B_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r69": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "44H",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_44H_b_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r70": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "45",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_45&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r71": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "50",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_50_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r72": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Section": "Presentation of a statement of cash flows",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IAS07_g10-17_TI",
   "URIDate": "2025-03-27"
  },
  "r73": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "30",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=8&code=ifrs-tx-2025-en-r&anchor=para_30_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r74": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "24",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2025-en-r&anchor=para_24_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r75": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "24",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2025-en-r&anchor=para_24_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r76": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "32",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2025-en-r&anchor=para_32_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r77": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "32",
   "Subparagraph": "a",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2025-en-r&anchor=para_32_a_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r78": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "19B",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_19B_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r79": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "2",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_2_b_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r80": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "21",
   "Subparagraph": "a",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_21_a_iv&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r81": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "22",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_22_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r82": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B12_b_i&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r83": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B12_b_ii&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r84": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B12_b_iii&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r85": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B12_b_iv&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r86": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "ix",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B12_b_ix&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r87": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "v",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B12_b_v&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r88": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "viii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B12_b_viii&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r89": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B13",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B13_a&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r90": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B13",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B13_d&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r91": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B13",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B13_g&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r92": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B4",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B4_a&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r93": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B4",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B4_b&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r94": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "93",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r95": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "93",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r96": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "93",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r97": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "93",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r98": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "93",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r99": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "14",
   "IssueDate": "2025-01-01",
   "Paragraph": "33",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=14&code=ifrs-tx-2025-en-r&anchor=para_33_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r100": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2025-01-01",
   "Paragraph": "115",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2025-en-r&anchor=para_115&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r101": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2025-01-01",
   "Paragraph": "120",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2025-en-r&anchor=para_120_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r102": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "47",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_47_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r103": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "47",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_47_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r104": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "53",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_53_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r105": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "53",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_53_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r106": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "53",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_53_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r107": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "53",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_53_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r108": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "53",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_53_g&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r109": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "53",
   "Subparagraph": "h",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_53_h&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r110": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "53",
   "Subparagraph": "j",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_53_j&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r111": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "53",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_53&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r112": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "59",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_59&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r113": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "94",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_94&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r114": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "97",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_97&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r115": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IFRS16_g51-60_TI",
   "URIDate": "2025-03-27"
  },
  "r116": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Section": "Presentation",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IFRS16_g47-50_TI",
   "URIDate": "2025-03-27"
  },
  "r117": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "109",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_109&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r118": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "109A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_109A&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r119": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "120",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_120&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r120": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "124",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_124&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r121": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "125",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_125&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r122": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "127",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_127&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r123": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "128",
   "Subparagraph": "a",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_128_a_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r124": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "128",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_128_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r125": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "132",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_132_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r126": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "45",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r127": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "45",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45_b_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r128": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "45",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45_b_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r129": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "45",
   "Subparagraph": "b",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45_b_iv&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r130": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "45",
   "Subparagraph": "b",
   "Clause": "vi",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45_b_vi&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r131": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "45",
   "Subparagraph": "b",
   "Clause": "vii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45_b_vii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r132": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "45",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r133": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "45",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r134": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "45",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r135": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "47",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_47_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r136": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "47",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_47_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r137": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "51",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_51_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r138": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "51",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_51_b_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r139": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "52",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_52&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r140": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "B64",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B64_f&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r141": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "B64",
   "Subparagraph": "q",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B64_q_i&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r142": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "B64",
   "Subparagraph": "q",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B64_q_ii&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r143": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "B64",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B64&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r144": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "B67",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B67_c&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r145": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "B67",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B67_d&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r146": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "B67",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B67&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r147": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Section": "Disclosures application of paragraphs 59 and 61",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&doctype=Appendix&subtype=B&dita_xref=IFRS03_gB64-B67_TI",
   "URIDate": "2025-03-27"
  },
  "r148": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "5",
   "IssueDate": "2025-01-01",
   "Paragraph": "33",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2025-en-r&anchor=para_33_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r149": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "6",
   "IssueDate": "2025-01-01",
   "Paragraph": "24",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=6&code=ifrs-tx-2025-en-r&anchor=para_24_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r150": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "6",
   "IssueDate": "2025-01-01",
   "Paragraph": "24",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=6&code=ifrs-tx-2025-en-r&anchor=para_24_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r151": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "6",
   "IssueDate": "2025-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=6&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IFRS06_g23-25_TI",
   "URIDate": "2025-03-27"
  },
  "r152": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "20",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_20_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r153": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "21C",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_21C&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r154": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "23B",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_23B_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r155": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24A&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r156": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24B",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24B&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r157": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24C",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24C_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r158": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24C",
   "Subparagraph": "b",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24C_b_iv&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r159": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24C",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24C&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r160": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24E",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24E_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r161": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "25",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_25&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r162": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "31",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_31&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r163": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "33",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_33&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r164": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "34",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_34&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r165": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35H",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35H&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r166": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35I",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35I&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r167": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35K",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35K&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r168": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35M",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35M&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r169": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "36",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_36&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r170": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "39",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_39_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r171": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "40",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_40_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r172": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "42E",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_42E_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r173": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "42I",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_42I&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r174": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "6",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_6&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r175": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "7",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_7&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r176": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Section": "Defined terms",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&doctype=Appendix&subtype=A&dita_xref=IFRS07_APPA_TI",
   "URIDate": "2025-03-27"
  },
  "r177": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Section": "Scope",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IFRS07_g3-5A_TI",
   "URIDate": "2025-03-27"
  },
  "r178": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "23",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_23_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r179": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "23",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_23_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r180": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "23",
   "Subparagraph": "h",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_23_h&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r181": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "23",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_23&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r182": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_28_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r183": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_28_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r184": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_28_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r185": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_28_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r186": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_28_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r187": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_28&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r188": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "32",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_32&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r189": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "33",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_33_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r190": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "33",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_33&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r191": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "34",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_34&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r192": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IFRS08_g20-24_TI",
   "URIDate": "2025-03-27"
  },
  "r193": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "9",
   "IssueDate": "2025-01-01",
   "Paragraph": "7.2.34",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=9&code=ifrs-tx-2025-en-r&anchor=para_7.2.34&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r194": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "9",
   "IssueDate": "2025-01-01",
   "Paragraph": "7.2.42",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=9&code=ifrs-tx-2025-en-r&anchor=para_7.2.42&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r195": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "4",
   "Subsection": "08",
   "Paragraph": "m",
   "Subparagraph": "(1)(iii)",
   "Publisher": "SEC"
  },
  "r196": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "4",
   "Subsection": "08",
   "Paragraph": "m",
   "Subparagraph": "(2)(ii)",
   "Publisher": "SEC"
  },
  "r197": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2026-01-01",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "30A",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_30A_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r198": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "104",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_104&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r199": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "108",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_108_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r200": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "115",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_115_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r201": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "115",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_115_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r202": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "115",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_115_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r203": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "115",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_115_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r204": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "115",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_115_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r205": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "115",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_115_g&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r206": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "115",
   "Subparagraph": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_115_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r207": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "115",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_115&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r208": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "120",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_120&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r209": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "122",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_122_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r210": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "122",
   "Subparagraph": "a",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_122_a_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r211": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "122",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_122_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r212": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "124",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_124_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r213": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "124",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_124_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r214": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "124",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_124&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r215": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "133",
   "Subparagraph": "a",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_133_a_iv&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r216": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "138",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_138&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r217": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "160",
   "Subparagraph": "a",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_160_a_iv&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r218": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "160",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_160_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r219": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "164",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_164_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r220": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "164",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_164_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r221": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "164",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_164_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r222": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "166",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_166_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r223": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "166",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_166&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r224": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "168",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_168_b_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r225": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "169",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_169&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r226": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "176",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_176&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r227": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "180",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_180_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r228": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "192",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_192&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r229": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "194",
   "Subparagraph": "c",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_194_c_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r230": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "194",
   "Subparagraph": "c",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_194_c_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r231": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "194",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_194_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r232": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "194",
   "Subparagraph": "f",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_194_f_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r233": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "194",
   "Subparagraph": "f",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_194_f_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r234": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "194",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_194_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r235": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "200",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_200_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r236": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "200",
   "Subparagraph": "e",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_200_e_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r237": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "200",
   "Subparagraph": "e",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_200_e_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r238": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "200",
   "Subparagraph": "e",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_200_e_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r239": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "200",
   "Subparagraph": "e",
   "Clause": "vii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_200_e_vii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r240": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "200",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_200_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r241": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "200",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_200&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r242": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "216",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_216_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r243": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "218",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_218_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r244": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "223",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_223_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r245": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "227",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_227&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r246": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "230",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_230&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r247": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "231",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_231&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r248": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "24",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_24_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r249": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "24",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_24_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r250": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "254",
   "Subparagraph": "d",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_254_d_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r251": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "254",
   "Subparagraph": "e",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_254_e_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r252": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "254",
   "Subparagraph": "f",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_254_f_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r253": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "257",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_257_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r254": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "257",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_257_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r255": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "257",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_257&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r256": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "259",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_259&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r257": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "263",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_263_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r258": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "263",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_263_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r259": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "269",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_269&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r260": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "271",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_271_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r261": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "271",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_271_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r262": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "273",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_273&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r263": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "274",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_274_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r264": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_28_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r265": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "Subparagraph": "a",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_28_a_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r266": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "31",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_31_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r267": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "31",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_31_b_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r268": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "31",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_31_b_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r269": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "31",
   "Subparagraph": "b",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_31_b_iv&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r270": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "31",
   "Subparagraph": "b",
   "Clause": "vi",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_31_b_vi&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r271": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "31",
   "Subparagraph": "b",
   "Clause": "vii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_31_b_vii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r272": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "31",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_31_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r273": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "31",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_31&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r274": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "34",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_34_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r275": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_35_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r276": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_35&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r277": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "37",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_37&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r278": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "43",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_43&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r279": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "56",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_56_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r280": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "60",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_60&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r281": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "61",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_61&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r282": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "62",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_62_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r283": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "62",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_62_b_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r284": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "62",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_62&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r285": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "64A",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_64A_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r286": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "66",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_66&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r287": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "70",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_70&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r288": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "71",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_71&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r289": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "72",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_72_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r290": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "75",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_75_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r291": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "75",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_75_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r292": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "95",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_95_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r293": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "95",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_95_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r294": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "95",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_95&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r295": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B10",
   "Subparagraph": "a",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B10_a_iv&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r296": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B10",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B10_a&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r297": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B12",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B12&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r298": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B13",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B13&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r299": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B9",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B9_f&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r300": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "104",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_104&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r301": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "106",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_106_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r302": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "106",
   "Subparagraph": "d",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_106_d_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r303": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "106",
   "Subparagraph": "d",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_106_d_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r304": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "106",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_106&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r305": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "106A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_106A&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r306": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "107",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_107&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r307": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "117",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_117&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r308": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "134",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_134&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r309": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "136",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_136&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r310": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "16",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_16&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r311": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_35&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r312": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r313": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_g&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r314": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r315": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "n",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_n&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r316": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "o",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_o&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r317": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "55",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r318": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "56",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_56&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r319": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "61",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_61_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r320": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "61",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_61&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r321": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "66",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_66&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r322": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "69",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_69&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r323": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "7",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_7&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r324": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "78",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_78_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r325": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "Subparagraph": "a",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_79_a_iv&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r326": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_79_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r327": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "81A",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_81A_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r328": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "81A",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_81A_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r329": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "81A",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_81A_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r330": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "82",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_82_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r331": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "82",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_82_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r332": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "82",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_82_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r333": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "90",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_90&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r334": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "91",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_91_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r335": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "91",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_91_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r336": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "92",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_92&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r337": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "99",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_99&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r338": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "80",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_80_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r339": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "138",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_138_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r340": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "138",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_138_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r341": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "147",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_147_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r342": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Paragraph": "87",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_87&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r343": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Section": "D Examples: disclosures",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&doctype=Illustrative%20Examples&dita_xref=IAS37_IE_D_TI",
   "URIDate": "2025-03-27"
  },
  "r344": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "16",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_16_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r345": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "17",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_17_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r346": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "17",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_17_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r347": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "17",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_17_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r348": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "44B",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_44B&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r349": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "44C",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_44C&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r350": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "44D",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_44D&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r351": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "50",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_50_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r352": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Section": "A Statement of cash flows for an entity other than a financial institution",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&doctype=Illustrative%20Examples&dita_xref=IAS07_IE_A_TI",
   "URIDate": "2025-03-27"
  },
  "r353": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Section": "C Reconciliation of liabilities arising from financing activities",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&doctype=Illustrative%20Examples&dita_xref=IAS07_IE_C_TI",
   "URIDate": "2025-03-27"
  },
  "r354": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B10",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B10_b&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r355": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "B6",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_B6&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r356": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "IE63",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_IE63&doctype=Illustrative%20Examples",
   "URIDate": "2025-03-27"
  },
  "r357": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2025-01-01",
   "Paragraph": "B89",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2025-en-r&anchor=para_B89_a&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r358": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2025-01-01",
   "Paragraph": "B89",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2025-en-r&anchor=para_B89_b&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r359": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2025-01-01",
   "Paragraph": "B89",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2025-en-r&anchor=para_B89_d&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r360": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "113",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_113_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r361": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "96",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_96_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r362": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "96",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_96_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r363": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "96",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_96_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r364": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "B64",
   "Subparagraph": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r365": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "IE72",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_IE72&doctype=Illustrative%20Examples",
   "URIDate": "2025-03-27"
  },
  "r366": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "32",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_32&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r367": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35N",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35N&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r368": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "B11",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B11&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r369": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "B35",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B35_g&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r370": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "B35",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B35&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r371": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "IG20D",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_IG20D&doctype=Implementation%20Guidance",
   "URIDate": "2025-03-27"
  },
  "r372": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "IG31A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_IG31A&doctype=Implementation%20Guidance",
   "URIDate": "2025-03-27"
  },
  "r373": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "23",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_23&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r374": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_28_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r375": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_28&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r376": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "IG4",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_IG4&doctype=Implementation%20Guidance",
   "URIDate": "2025-03-27"
  },
  "r377": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "103",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_103_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r378": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "103",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_103_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r379": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "103",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_103_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r380": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "193",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_193_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r381": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_35_g&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r382": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B9",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B9_b&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r383": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B9",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B9_f&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r384": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "102",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_102&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r385": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "103",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_103&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r386": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "108",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_108&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r387": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "68",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_68&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r388": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "70",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_70&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r389": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "78",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_78_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r390": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "78",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_78_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r391": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "IG6",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_IG6&doctype=Implementation%20Guidance",
   "URIDate": "2025-03-27"
  },
  "r392": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12"
  },
  "r393": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12",
   "Subsection": "b"
  },
  "r394": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12",
   "Subsection": "b-2"
  },
  "r395": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12",
   "Subsection": "d1-1"
  },
  "r396": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 10-K",
   "Number": "249",
   "Section": "310"
  },
  "r397": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Number": "249",
   "Section": "220",
   "Subsection": "f"
  },
  "r398": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Number": "249",
   "Section": "240",
   "Subsection": "f"
  },
  "r399": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w"
  },
  "r400": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-T",
   "Number": "232",
   "Section": "405"
  },
  "r401": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Form 20-F",
   "Number": "Part II",
   "Section": "Item 18",
   "Subparagraph": "(Instruction 2)",
   "Publisher": "SEC"
  },
  "r402": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "81",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81_g&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r403": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "81",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r404": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "37",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_37&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r405": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "73",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r406": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "73",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r407": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "37",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=2&code=ifrs-tx-2025-en-r&anchor=para_37&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r408": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2025-01-01",
   "Paragraph": "70",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2025-en-r&anchor=para_70_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r409": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2025-01-01",
   "Paragraph": "70",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2025-en-r&anchor=para_70_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r410": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Paragraph": "84",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_84_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r411": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Paragraph": "84",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_84&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r412": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2025-01-01",
   "Paragraph": "118",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_118_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r413": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_79_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r414": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "41",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=41&code=ifrs-tx-2025-en-r&anchor=para_54_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r415": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "16",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_16&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r416": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "17",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_17&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r417": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "20",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_20_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r418": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "20",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_20_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r419": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "20",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_20&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r420": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "93",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r421": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "93",
   "Subparagraph": "h",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_h&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r422": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "B64",
   "Subparagraph": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r423": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "39",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_39&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r424": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "7",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_7&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r425": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1204",
   "Paragraph": "b",
   "Subparagraph": "(1)",
   "Publisher": "SEC"
  },
  "r426": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Section": "1204",
   "Paragraph": "b",
   "Subparagraph": "(2)",
   "Publisher": "SEC"
  },
  "r427": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "12",
   "Paragraph": "Column A",
   "Subparagraph": "(ii)",
   "Footnote": "2",
   "Publisher": "SEC"
  },
  "r428": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "12A",
   "Paragraph": "Column A",
   "Footnote": "2",
   "Publisher": "SEC"
  },
  "r429": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "12B",
   "Paragraph": "Column A",
   "Subparagraph": "(b)",
   "Footnote": "1",
   "Publisher": "SEC"
  },
  "r430": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "14",
   "Paragraph": "Column A",
   "Footnote": "2",
   "Publisher": "SEC"
  },
  "r431": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "10",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_10_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r432": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "108",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_108&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r433": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "112",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_112_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r434": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "117",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_117&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r435": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "55",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r436": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "78",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_78&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r437": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_79_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r438": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "85",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_85&doctype=Standard",
   "URIDate": "2025-03-27"
  }
 }
}
