Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Trading Arrangement: Trading Arrangement [Axis] Maximum Maximum [Member] Statistical Measurement [Domain] Statistical Measurement [Domain] Q4 2026 End Date Quarter 4 2026 [Member] End Date Quarter 4 2026 [Member] Title of 12(b) Security Title of 12(b) Security Subsequent Event Subsequent Event [Member] Document Fiscal Year Focus Document Fiscal Year Focus Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Canada - Offshore Canada Offshore [Member] Canada Offshore [Member] Schedule of Fair Value Information Associated with Impaired Properties Fair Value Measurements, Nonrecurring [Table Text Block] Adjustment to Compensation, Amount Adjustment to Compensation Amount Segment Reporting [Abstract] Segment Reporting [Abstract] Well costs incurred and expensed Well Costs Incurred And Expensed Well Costs Incurred And Expensed Common Stock, par $1.00, authorized 450,000,000 shares, issued 195,100,628 shares at September 30, 2026 and 195,100,628 shares at December 31, 2025 Common Stock, Value, Issued 2027 Lessee, Operating Lease, Liability, to be Paid, Year One Additions pending the determination of proved reserves Oil and Gas, Capitalized Exploratory Well Cost, Addition Pending Determination of Proved Reserve Withholding tax on stock-based incentive awards Payment, Tax Withholding, Share-Based Payment Arrangement Estimated defined contribution provision Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment Exploratory well costs capitalized more than one year Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year Employee and Retiree Benefit Plans Retirement Benefits [Text Block] Payments to acquire additional working interests Payments To Acquire Additional Working Interests Payments To Acquire Additional Working Interests Leases Lessee, Finance Leases [Text Block] Line of Credit Line of Credit [Member] Restatement Determination Date Restatement Determination Date Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets 2027 Finance Lease, Liability, to be Paid, Year One Current and long-term debt Long-Term Debt and Lease Obligation, Including Current Maturities Derivative Instrument [Axis] Derivative Instrument [Axis] Restricted stock awards (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Schedule of Effective Income Tax Rates Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Components of other comprehensive income (loss): Component of Operating Income [Abstract] Eagle Ford Shale Eagle Ford Shale [Member] Eagle Ford Shale Measurement Frequency [Axis] Measurement Frequency [Axis] Current income tax expense Current Income Tax Expense (Benefit) Contract with Customer, Basis of Pricing [Domain] Contract with Customer, Basis of Pricing [Domain] Canada Canada Segment [Member] Canada Segment Amendment Flag Amendment Flag Current liabilities Liabilities, Current [Abstract] Debt extinguishment cash cost Debt Extinguishment, Cash Cost Debt Extinguishment, Cash Cost Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Finance lease obligation payments Financing cash flows from finance leases Finance Lease, Principal Payments 2021 NED Plan 2021 Non Employee Director Plan [Member] 2021 Non Employee Director Plan Leases [Abstract] Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax [Abstract] 6.375 Notes Due 2028 6.375 Notes Due 2028 [Member] 6.375 Notes Due 2028 Distributions to noncontrolling interest Payments to Noncontrolling Interests Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Schedule of Volumes Per Day Associated with Outstanding Natural Gas Derivative Contracts and the Weighted Average Prices for these Contracts Schedule of Price Risk Derivatives [Table Text Block] Liabilities settled Asset Retirement Obligation, Liabilities Settled Property, Plant, and Equipment [Abstract] Property, Plant, and Equipment [Abstract] Entity Address, State or Province Entity Address, State or Province PEO Total Compensation Amount PEO Total Compensation Amount Net gain (loss) from foreign currency translation Foreign currency translation, net of income taxes Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Common stock, par value (in USD per share) Common Stock, Par or Stated Value Per Share Long-term non-cash compensation Employee Benefit and Share-Based Payment Arrangement, Noncash Additions to property, plant, equipment Segment Reporting, Long-Lived Asset, Expenditure for Addition Asset Acquisition [Axis] Asset Acquisition [Axis] Basic (in shares) Basic method (in shares) Weighted Average Number of Shares Outstanding, Basic Receivables from contracts with customers Contract with Customer, Asset, after Allowance for Credit Loss, Current Retirement Benefits [Abstract] Retirement Benefits [Abstract] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Balance at beginning of year Balance at end of period Balance at end of period Asset Retirement Obligation Total current liabilities Liabilities, Current Interest Income Other Nonoperating Income (Expense), Adjustment Other Nonoperating Income (Expense), Adjustment 2030 Lessee, Operating Lease, Liability, to be Paid, Year Four Number of reportable segments not disclosed flag Number Of Reportable Segments Not Disclosed Flag Number Of Reportable Segments Not Disclosed Flag Environmental Remediation Obligations [Abstract] Environmental Remediation Obligations [Abstract] Aging of capitalized well costs: Oil and Gas, Capitalized Exploratory Well Cost [Abstract] Entity Address, City or Town Entity Address, City or Town Consideration transferred Asset Acquisition, Consideration Transferred Grants in period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Performance period Share-Based Compensation Arrangement by Share-Based Payment Award, Performance Period Share-Based Compensation Arrangement by Share-Based Payment Award, Performance Period Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Interest rate Line of Credit Facility, Interest Rate at Period End Level 2 Fair Value, Inputs, Level 2 [Member] Other income (loss) Nonoperating Income (Expense) [Abstract] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Credit facility maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Carrying Amount Assets And Liabilities [Abstract] Assets and Liabilities [Abstract] Fair Value Assets And Liabilities Measured On Recurring Basis [Table] Fair Value Assets And Liabilities Measured On Recurring Basis [Table] Fair Value, Assets and Liabilities Measured on Recurring Basis [Table] September 30, 2026 September 30, 2026 [Member] September 30, 2026 Name of Property [Axis] Name of Property [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Net cash provided by continuing operations activities Cash Provided by (Used in) Operating Activity, Continuing Operation Accounting Principles Adopted and Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Remaining Operating And Finance Lease Liability, Payments, Due After Year Four Operating And Finance Lease Liability, Payments, Due After Year Four Reclassifications to proved properties based on the determination of proved reserves Oil and Gas, Capitalized Exploratory Well Cost, Reclassification Based on Determination of Proved Reserve Schedule of Segment Information Segment Reporting [Table Text Block] Noncontrolling Interest Noncontrolling Interest [Member] Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items] Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging [Line Items] June 30, 2025 June 30, 2025 [Member] June 30, 2025 Total notes payable, net of unamortized discount Long-Term Debt Property, Plant and Equipment Property, Plant, and Equipment [Text Block] Increase (decrease) in income taxes payable Increase (Decrease) in Income Taxes Payable Schedule of Maturity of Operating Lease Liabilities Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Document Period End Date Document Period End Date Net (increase) decrease in operating working capital, excluding cash and cash equivalents: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Net cash required by investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Debt instrument, face amount Debt Instrument, Face Amount Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization [Roll Forward] Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization [Roll Forward] 2028 Lessee, Operating Lease, Liability, to be Paid, Year Two NET INCOME (LOSS) PER COMMON SHARE – BASIC Earnings Per Share, Basic [Abstract] Costs and expenses Costs and Expenses [Abstract] Security Exchange Name Security Exchange Name Treasury stock Treasury Stock, Common, Value Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Finance leases Finance Lease, Weighted Average Remaining Lease Term Remaining Finance Lease, Liability, to be Paid, After Year Four Finance Lease, Liability, to be Paid, After Year Four Liabilities Liabilities, Fair Value Disclosure Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Consolidation Items [Domain] Consolidation Items [Domain] 6.000% notes, due October 2032 6.000% Notes, Due October 2032 [Member] 6.000% Notes, Due October 2032 Maximum number of shares available for issuance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Operating lease liabilities Operating Lease, Liability, Current Schedule of Net Changes in Capitalized Exploratory Well Costs Oil and Gas, Capitalized Exploratory Well Cost, Roll Forward [Table Text Block] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Net Income Per Common Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name FSO Vessel FSO Vessel [Member] FSO Vessel Earnings Per Share [Abstract] Earnings Per Share [Abstract] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Schedule of Weighted-Average Shares Outstanding Schedule of Weighted Average Number of Shares [Table Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Total liabilities Liabilities Trading Symbol Trading Symbol Geographical [Domain] Geographical [Domain] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Income taxes payable Accrued Income Taxes, Current Company Selected Measure Name Company Selected Measure Name Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Award Date [Axis] Award Date [Axis] 6.375% notes, due July 2028 6.375% Notes Due July 2028 [Member] 6.375% Notes Due July 2028 Non-cash investing activities: Noncash Investing and Financing Items [Abstract] Unrealized gain on derivative instruments Unrealized Gain (Loss) on Derivatives NET INCOME (LOSS) PER COMMON SHARE – DILUTED 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Finance Lease, Liability, to be Paid, Year Two Line of Credit Facility [Table] Line of Credit Facility [Table] Underlying Security Market Price Change Underlying Security Market Price Change, Percent 2030 Finance Lease, Liability, to be Paid, Year Four Financial Instruments and Risk Management Derivative Instruments and Hedging Activities Disclosure [Text Block] Less imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Award Date [Domain] Award Date [Domain] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Contributions to benefit plans Defined Benefit Plan, Plan Assets, Contributions by Employer Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Dilutive restricted stock units (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment Less imputed interest Finance Lease, Liability, Undiscounted Excess Amount Depreciation, depletion and amortization Depreciation, Depletion and Amortization, Adjustment Depreciation, Depletion and Amortization, Adjustment Aging of Capitalized Exploratory Well Costs, Period Range [Domain] Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging [Domain] Award Timing Predetermined Award Timing Predetermined [Flag] March 31, 2026 March 31, 2026 [Member] March 31, 2026 7.050% notes, due May 2029 7.050% Notes, Due May 2028 [Member] 7.050% Notes, Due May 2028 Treasury Stock Treasury Stock, Common [Member] February 4, 2026 February 4, 2026 [Member] February 4, 2026 Letters of credit outstanding Letters of Credit Outstanding, Amount Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Total debt including current maturities Debt and Lease Obligation Share-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Level 1 Fair Value, Inputs, Level 1 [Member] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Deferred income tax expense (benefit) Deferred Income Tax Expense (Benefit), Adjustment Deferred Income Tax Expense (Benefit), Adjustment Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Total future minimum lease payments Lessee, Operating Lease, Liability, to be Paid 5.875% notes, due December 2027 5.875 Notes Due 2027 [Member] 5.875 Notes Due 2027 October 1, 2025 October 1, 2025 [Member] October 1, 2025 Liabilities incurred Asset Retirement Obligation, Liabilities Incurred All Executive Categories All Executive Categories [Member] Daily production (in barrels per day) Oil and Gas, Delivery Commitment, Daily Production Schedule of Reconciliation of Beginning and Ending Aggregate Carrying Amount of Asset Retirement Obligations Schedule of Asset Retirement 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Current maturities Long-Term Debt and Lease Obligation, Current Business Segments Segment Reporting [Text Block] Minimum Minimum [Member] Senior unsecured revolving credit facility Long-Term Line of Credit Less imputed interest Lessee, Operating and Finance Leases, Undiscounted Excess Amount Lessee, Operating and Finance Leases, Undiscounted Excess Amount Cash dividends paid Payments of Ordinary Dividends, Common Stock Operations and maintenance services, term of contract Operations And Maintenance Services, Term Of Contract Operations And Maintenance Services, Term Of Contract Expiration Date Trading Arrangement Expiration Date Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Continuing operations (in USD per share) Income (Loss) from Continuing Operations, Per Diluted Share Continuing operations (in USD per share) Income (Loss) from Continuing Operations, Per Basic Share Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] 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(TSR) Total Shareholder Return Performance Based Restricted Stock Units [Member] Total Shareholder Return Performance Based Restricted Stock Units Exploration Expenses Exploration Expense [Abstract] Exploration Expense Document Quarterly Report Document Quarterly Report Gain on sale of assets and other operating income Gain (Loss) on Sale of Assets, Derivatives and Other Income Gain (Loss) on Sale of Assets, Derivatives and Other Income Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Segments [Domain] Segments [Domain] Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Financing Arrangements and Debt Debt Disclosure [Text Block] Transaction costs Debt Issuance Costs, Net Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Net crude oil and condensate revenue Crude Oil, Condensate, and Natural Gas Liquids (NGL) [Member] Equity Component [Domain] Equity Component [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Total costs and expenses Costs and Expenses Adoption Date Trading Arrangement Adoption Date Finance leases Finance Lease, Weighted Average Discount Rate, Percent Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Murphy Shareholders' Equity Equity, Attributable to Parent Total other loss Nonoperating Income (Expense) Threshold for disclosure of monetary sanctions related to aware of legal environmental proceedings Threshold For Disclosure Of Monetary Sanctions, Not Aware Of Environmental Legal Proceedings Threshold For Disclosure Of Monetary Sanctions, Not Aware Of Environmental Legal Proceedings Severance and ad valorem taxes Production Tax Expense Environmental and Other Contingencies Environmental Loss Contingency Disclosure [Text Block] ASSETS Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Average forward price (in dollars per barrel) Derivative, Swap Type, Average Fixed Price Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Lease liabilities Present value of lease liabilities Operating Lease, Liability 6.375% notes, due December 2042 6.375% Notes, Due December 2042 [Member] 6.375% Notes, Due December 2042 Insider Trading Policies and Procedures [Line Items] Finance lease obligations, due through October 2039 Finance Lease, Liability Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Other Financial Information [Abstract] Other Financial Information [Abstract] Other Financial Information [Abstract] Contracts to sell natural gas at CAD fixed pricing CAD Fixed Price [Member] Alberta AECO Fixed Price [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Deferred income tax expense Deferred Income Tax Expense (Benefit) Selling and general expenses Selling, General and Administrative Expense Other Other Foreign Geographical Locations [Member] Other Foreign Geographical Locations Selling and general expenses Selling, General and Administrative Expense, Including Discontinues Operations Selling, General and Administrative Expense, Including Discontinues Operations Other operating expenses Other Operating Income (Expense), Net, Adjustment Other Operating Income (Expense), Net, Adjustment Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Weighted average remaining lease term: Weighted Average Remaining Lease Term [Abstract] Weighted Average Remaining Lease Term [Abstract] Antidilutive restricted stock units excluded from diluted shares (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Schedule of Dilutive Restricted Stock Units Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Banjo Banjo #1 [Member] Banjo #1 Entity Central Index Key Entity Central Index Key Accumulated depreciation, depletion and amortization Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization All Adjustments to Compensation All Adjustments to Compensation [Member] Corporate and Discontinued Operations Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Name of Property [Domain] Name of Property [Domain] Other operating activities, net Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item Equity [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Before reclassifications to income Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Income Statement [Abstract] Income Statement [Abstract] Equity Equity, Attributable to Parent [Abstract] Document Transition Report Document Transition Report Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Nonqualified employee savings plan Nonqualified Employee Savings Plans, Fair Value Disclosure Nonqualified Employee Savings Plans, Fair Value Disclosure Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Debt instrument, basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate (Increase) decrease in capital expenditure accrual Increase (Decrease) In Capital Expenditure Accrual Increase (Decrease) In Capital Expenditure Accrual Impairment of assets Total Pretax 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Preferred Stock, Shares Issued Amortization of prior service cost (credit) Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Operating Segments Operating Segments [Member] Retirement and postretirement benefit plans Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent Interest expense, net Interest expense, net of capitalization Interest Expense, Nonoperating Daily Simple SOFR Daily Simple SOFR [Member] Daily Simple SOFR Incentive Plans Share-Based Payment Arrangement [Text Block] Contract with Customer, Duration [Domain] Contract with Customer, Duration [Domain] PEO PEO [Member] Schedule of Aging of Capitalized Exploratory Well Costs Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging [Table Text Block] Changes due to translation of foreign currencies Asset Retirement Obligation, Foreign Currency Translation Gain (Loss) Other taxes payable Accrual for Taxes Other than Income Taxes, Current (Increase) decrease in prepaid expenses Increase (Decrease) in Prepaid Expense Transportation, gathering and processing Transportation, Gathering and Processing Costs Transportation, Gathering and Processing Costs Compensation charged against income before tax benefit Share-Based Payment Arrangement, Expense Treasury shares purchased (in shares) Treasury shares purchased (in shares) Stock Repurchased and Retired During Period, Shares Deferred credits and other liabilities Other Liabilities, Noncurrent Retirement Plan Type [Axis] Retirement Plan Type [Axis] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Fair value per share at grant date (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Subsequent Event Type [Domain] Subsequent Event Type [Domain] Retained Earnings Retained Earnings [Member] Non-current operating lease liabilities Operating Lease, Liability, Noncurrent Asset Retirement Obligations Asset Retirement Obligation Disclosure [Text Block] Repair and maintenance Utilities Operating Expense, Maintenance Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Beginning of year (in shares) End of year (in shares) Common Stock, Shares, Outstanding Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Award Timing Disclosures [Line Items] Foreign Currency Translation Gains (Losses) Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Debt issuance cost Payments of Debt Issuance Costs Net income (loss) (in USD per share) NET INCOME (LOSS) PER COMMON SHARE – DILUTED (in USD per share) Earnings Per Share, Diluted Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Net cash required by financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Net increase in non-cash working capital Net increase in non-cash working capital Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital Discontinued operations (in USD per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Borrowings on revolving credit facility Proceeds from Long-Term Lines of Credit Additional number of wells under the agreement Lessee, Operating Lease, Lease Not Yet Commenced, Additional Number Of Wells Lessee, Operating Lease, Lease Not Yet Commenced, Additional Number Of Wells Adjustments to reconcile net income to net cash provided by continuing operations activities Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Net natural gas revenue Natural Gas [Member] United States - Onshore United States Onshore [Member] United States Onshore [Member] Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Reclassifications tax Reclassification from AOCI, Current Period, Tax Financing Activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Revenue from production Revenue from production Revenue from Contract with Customer, Excluding Assessed Tax Property, plant and equipment, at cost less accumulated depreciation, depletion and amortization of $15,736,096 in 2026 and $15,068,149 in 2025 Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Total income tax expense (benefit) Income Tax Expense (Benefit), 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[Table] Segment Reporting [Table] Expected benefit plan contributions to be made during the year Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year Income tax expense Income Tax Expense (Benefit), Continuing Operations [Abstract] Wells Wells and Related Equipment and Facilities [Member] Derivative, number of contracts Derivative, Number of Instruments Held Revenue from production Oil and Gas, Exploration and Production [Member] Q4 2027 End Date Quarter 4 2027 [Member] End Date Quarter 4 2027 All Trading Arrangements All Trading Arrangements [Member] Gain on derivative instruments Derivative, Gain (Loss) on Derivative, Net Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Operating income from continuing operations Operating Income (Loss) Current Fiscal Year End Date Current Fiscal Year End Date Schedule of Maturity of Finance Lease Liabilities Finance Lease, Liability, 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natural gas at USD index pricing USD Index Pricing [Member] USD Index Pricing [Member] Unsuccessful exploration well costs and previously suspended exploration costs Unsuccessful Exploration Well Costs And Previously Suspended Exploration Costs (Credit) Unsuccessful Exploration Well Costs And Previously Suspended Exploration Costs (Credit) Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Number of foreign currency derivatives Number of Foreign Currency Derivatives Held Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Pension Benefits Pension Plan [Member] Common Stock Common Stock [Member] Geological and geophysical Oil and Gas, Result of Operation, Exploration Cost, Adjustments Oil and Gas, Result of Operation, Exploration Cost, Adjustments 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6.500 Notes Due 2034 6.500 Notes Due 2034 [Member] 6.500 Notes Due 2034 Block CI-502 Block CI-502 [Member] Block CI-502 Cumulative Preferred Stock, par $100, authorized 400,000 shares, none issued Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Schedule of Noncash Operating Working Capital (Increase) Decrease Cash Flow, Operating Capital [Table Text Block] Reclassifications to income Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Hedging Designation [Domain] Hedging Designation [Domain] No. of Projects (in projects) Projects That Have Exploratory Well Costs That Have Been Capitalized Projects that have Exploratory Well Costs that have been Capitalized Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Interest paid, net of amounts capitalized of $15.7 million in 2026 and $5.3 million in 2025 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obligation Total long-term debt Long-Term Debt and Lease Obligation Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Triggering Event [Axis] Triggering Event [Axis] Triggering Event Debt Instrument [Line Items] Debt Instrument [Line Items] Other Other Countries Segment [Member] Other Countries Segment Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Asset retirement costs capitalized Noncash Asset Retirement Obligation Noncash additions to property, plant and equipment for asset retirement costs capitalized. Defined Benefit Plan and Other Postretirement Benefit Plan [Domain] Retirement Plan Type [Domain] Capital in Excess of Par Value Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent Finance Leases Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Gain on derivative instruments Gain (Loss) on Derivative Instruments, Net, Pretax Lease operating expenses Total lease operating expenses Operating Lease, Expense Company Selected Measure Amount Company Selected Measure Amount Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Depreciation, depletion and amortization Depreciation, depletion and amortization Depreciation, Depletion and Amortization Number of wells under initial term of contract Lessee, Operating Lease, Lease Not Yet Commenced, Number Of Wells Lessee, Operating Lease, Lease Not Yet Commenced, Number Of Wells 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from discontinued operations, net of income taxes (Income) loss from discontinued operations Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest August 31, 2026 August 31, 2026 [Member] August 31, 2026 Restatement Determination Date: Restatement Determination Date [Axis] 2026 Long-Term Plan 2026 Stock Plan for Non-Employee Directors [Member] 2026 Stock Plan for Non-Employee Directors Schedule of Components of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Current Long-Term Contracts Outstanding Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] Restricted stock transactions and other Stock Issued During Period, Value, Restricted Stock Award, Gross Number of offsetting positions (in offsetting positions) Number Of Offsetting Positions Number Of Offsetting Positions Gulf Of America Gulf Of America [Member] 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