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v3.22.2

Subsequent Events (Details) - Retail $ in Millions | Nov. 30, 2021 CAD ($) gasStation
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Disclosure of non-adjusting events after reporting period [line items] |
Consideration for sale of assets held for sale | $ | $ 420
Assets held-for-sale, number of gas stations | gasStation | 337

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- Definition Assets held-for-sale, number of gas stations + References No definition available. + Details
Name: | cve_AssetsHeldForSaleNumberOfGasStations
Namespace Prefix: | cve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Consideration for sale of assets held for sale + References No definition available. + Details
Name: | cve_ConsiderationForSaleOfAssetsHeldForSale
Namespace Prefix: | cve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- 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
Name: | ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_SegmentsAxis=cve_RetailMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |