XML 150 R115.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Inventories - Schedule of Inventories (Detail) - CAD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Disclosure of inventories [line items] |  |
Parts and Supplies | $ 268 | $ 93
Current inventories | 3,919 | 1,089
Oil Sands |  |
Disclosure of inventories [line items] |  |
Crude Oil | 1,419 | 382
Conventional |  |
Disclosure of inventories [line items] |  |
Crude Oil | 78 | 1
Offshore |  |
Disclosure of inventories [line items] |  |
Crude Oil | 39 | 0
Canadian Manufacturing |  |
Disclosure of inventories [line items] |  |
Crude Oil | 88 | 0
U.S. Manufacturing |  |
Disclosure of inventories [line items] |  |
Crude Oil | 2,001 | 613
Retail |  |
Disclosure of inventories [line items] |  |
Crude Oil | $ 26 | $ 0

X
- Definition Disclosure of inventories. + References No definition available. + Details
Name: | cve_DisclosureOfInventoriesLineItems
Namespace Prefix: | cve_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition A classification of current inventory representing the amount of unrefined, unprocessed oil. [Refer: Inventories] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 2 -IssueDate 2021-01-01 -Paragraph 37 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=2&code=ifrs-tx-2021-en-r&anchor=para_37&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_CurrentCrudeOil
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of current inventories. [Refer: Inventories] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 2 -IssueDate 2021-01-01 -Paragraph 36 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=2&code=ifrs-tx-2021-en-r&anchor=para_36_b&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph g -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_g&doctype=Standard -URIDate 2021-03-24 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 68 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_68&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_Inventories
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of inventory that the entity does not separately disclose in the same statement or note. [Refer: Inventories] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 2 -IssueDate 2021-01-01 -Paragraph 37 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=2&code=ifrs-tx-2021-en-r&anchor=para_37&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_OtherInventories
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

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

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

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

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