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Commitments and Contingencies - Additional information (Detail) - CAD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Commitments And Contingencies [Abstract]
Outstanding letters of credit	$ 355	$ 364

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- Definition

Commitments And Contingencies [Abstract]

+ References

No definition available.

+ Details

Name:	cve_CommitmentsAndContingenciesAbstract
Namespace Prefix:	cve_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

Letters of credit issued as security for performance.

+ References

No definition available.

+ Details

Name:	cve_LettersOfCreditIssuedAsSecurityForPerformance
Namespace Prefix:	cve_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant