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Goodwill - Additional information (Detail) - CAD ($) $ in Billions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Goodwill [Abstract] |  |
Additions, disposals or impairments | $ 0.0 | $ 0.0

X
- Definition Goodwill abstract. + References No definition available. + Details
Name: | cve_GoodwillAbstract
Namespace Prefix: | cve_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Goodwill, Additions, Disposals And Impairments + References No definition available. + Details
Name: | cve_GoodwillAdditionsDisposalsAndImpairments
Namespace Prefix: | cve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration