XML 137 R102.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Impairment Charges and Reversals - Sensitivity (Details) - CAD ($) $ in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Dec. 31, 2021 | Dec. 31, 2020
Clearwater |  |  |
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |  |
Increase through change in discount rate, Impairments |  | $ (13) | $ (5)
Decrease through change in discount rate, Impairments |  | 13 | 6
Five percent increase through change in forward price estimates, Impairments |  | 55 | 52
Five percent decrease through change in forward price estimates, Impairments |  | (54) | (97)
Elmworth-Wapiti |  |  |
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |  |
Increase through change in discount rate, Impairments |  | (27) | (7)
Decrease through change in discount rate, Impairments |  | 28 | 8
Five percent increase through change in forward price estimates, Impairments |  | 84 | 54
Five percent decrease through change in forward price estimates, Impairments |  | (81) | (96)
Kaybob-Edson |  |  |
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |  |
Increase through change in discount rate, Impairments |  | (26) | (13)
Decrease through change in discount rate, Impairments |  | 26 | 14
Five percent increase through change in forward price estimates, Impairments |  | 98 | 54
Five percent decrease through change in forward price estimates, Impairments |  | (97) | $ (106)
Borger CGU |  |  |
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |  |
Increase through change in discount rate, Impairments | $ (71) |  |
Decrease through change in discount rate, Impairments | 81 |  |
Five percent increase through change in forward price estimates, Impairments | 263 |  |
Five percent decrease through change in forward price estimates, Impairments | $ (264) |  |
Borger, Wood River, and Lima CGUs |  |  |
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |  |
Increase through change in discount rate, Impairments |  | (190) |
Decrease through change in discount rate, Impairments |  | 214 |
Five percent increase through change in forward price estimates, Impairments |  | 749 |
Five percent decrease through change in forward price estimates, Impairments |  | $ (754) |

X
- Definition Five percent decrease through change in forward price estimates, Impairments + References No definition available. + Details
Name: | cve_FivePercentDecreaseThroughChangeInForwardPriceEstimatesImpairments
Namespace Prefix: | cve_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Five percent increase through change in forward price estimates, Impairments + References No definition available. + Details
Name: | cve_FivePercentIncreaseThroughChangeInForwardPriceEstimatesImpairments
Namespace Prefix: | cve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition One percent decrease through change in discount rate, impairments + References No definition available. + Details
Name: | cve_OnePercentDecreaseThroughChangeInDiscountRateImpairments
Namespace Prefix: | cve_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition One percent increase through change in discount rate, impairments + References No definition available. + Details
Name: | cve_OnePercentIncreaseThroughChangeInDiscountRateImpairments
Namespace Prefix: | cve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis=cve_ClearwaterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis=cve_ElmworthWapitiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis=cve_KaybobEdsonMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis=cve_BorgerCashGeneratingUnitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis=cve_BorgerWoodRiverAndLimaCGUsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |