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Commitments and Contingencies - Additional information (Detail) - CAD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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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