Average Contract Financial Term

No definition available.

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- Definition

Average crude oil price.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Fair value of derivative financial instruments net.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Number of days outstanding for credit exposures using external credit grading system.

+ References

No definition available.

+ Details

Name:	cve_NumberOfDaysOutstandingForCreditExposuresUsingExternalCreditGradingSystem
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Data Type:	xbrli:durationItemType
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Period Type:	instant

- Definition

Percentage Of Accounts Receivable Outstanding, Less than 60 Days

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Percentage of credit exposures using external credit grading system.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Target net debt to adjusted earnings before interest taxes depreciation depletion and amortization ratio.

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

No definition available.

+ Details

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 7
-IssueDate 2025-01-01
-Paragraph 35N
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-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/exampleRef
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-URIDate 2025-03-27

+ Details

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Data Type:	dtr-2022:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 112
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-URIDate 2025-03-27

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Details

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- Details

Name:	ifrs-full_ClassesOfFinancialInstrumentsAxis=cve_ForeignExchangeContractsMember
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- Details

Name:	ifrs-full_ClassesOfFinancialInstrumentsAxis=cve_InterestRateContractsOrCrossCurrencyInterestRateSwapsMember
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Data Type:	na
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- Details

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- Details

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- Details

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RISK MANAGEMENT - Additional Information (Details) $ in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2026 CAD ($) $ / bbl	Sep. 30, 2026 USD ($)	Dec. 31, 2025 CAD ($)	Dec. 31, 2025 USD ($)
Disclosure of Nature and Extent of Risks Arising from Financial Instruments [Line Items]
Fair value of derivative financial instruments net	$ 28		$ 10
Percentage of accounts receivable outstanding, less than 60 days	99.00%	99.00%
Target net debt to adjusted EBITDA ratio	1.0
Average crude oil price \| $ / bbl	45.00
Fair Value Derivative Financial Instruments
Disclosure of Nature and Extent of Risks Arising from Financial Instruments [Line Items]
Average contract financial term	27 months
Foreign Exchange Contracts
Disclosure of Nature and Extent of Risks Arising from Financial Instruments [Line Items]
Fair value of derivative financial instruments net	$ (14)
Notional value		$ 673		$ 0
Interest Rate Contracts Or Cross Currency Interest Rate Swaps
Disclosure of Nature and Extent of Risks Arising from Financial Instruments [Line Items]
Notional value		$ 0		$ 0
Trade Receivables \| Credit risk
Disclosure of Nature and Extent of Risks Arising from Financial Instruments [Line Items]
Average expected credit loss rate	0.30%	0.30%	0.30%	0.30%
Trade Receivables \| Credit risk \| Investment grade counterparties
Disclosure of Nature and Extent of Risks Arising from Financial Instruments [Line Items]
Number of days outstanding for accruals, joint operations, trade receivables and net investment in finance leases	60 days	60 days
Trade Receivables \| Credit risk \| Investment grade counterparties \| Minimum
Disclosure of Nature and Extent of Risks Arising from Financial Instruments [Line Items]
Percent of accounts receivable held with investment grade counterparties	81.00%	81.00%	81.00%	81.00%