XML 190 R145.htm IDEA: XBRL DOCUMENT
v3.20.4

Stock-Based Compensation Plans - Summary of Options Outstanding and Exercisable by Range of Exercise Price (Detail) - NSRs [Member] shares in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 shares $ / shares | Dec. 31, 2019 shares $ / shares
Disclosure of range of exercise prices of outstanding share options [Line Items] |  |
Outstanding Number | shares | 30,597 | 31,528
Outstanding Weighted Average Remaining Contractual Life | 2 years 10 months 24 days |
Outstanding Weighted Average Exercise Price | $ / shares | $ 18.52 | $ 22.61
Exercisable Number | shares | 20,665 |
Exercisable Weighted Average Exercise Price | $ / shares | $ 21.94 |
5.00 to 9.99 [Member] |  |
Disclosure of range of exercise prices of outstanding share options [Line Items] |  |
Outstanding Number | shares | 2,796 |
Outstanding Weighted Average Remaining Contractual Life | 4 years 2 months 12 days |
Outstanding Weighted Average Exercise Price | $ / shares | $ 9.48 |
Exercisable Number | shares | 1,596 |
Exercisable Weighted Average Exercise Price | $ / shares | $ 9.48 |
10.00 to 14.99 [Member] |  |
Disclosure of range of exercise prices of outstanding share options [Line Items] |  |
Outstanding Number | shares | 12,921 |
Outstanding Weighted Average Remaining Contractual Life | 5 years 2 months 12 days |
Outstanding Weighted Average Exercise Price | $ / shares | $ 12.27 |
Exercisable Number | shares | 4,189 |
Exercisable Weighted Average Exercise Price | $ / shares | $ 13.53 |
15.00 to 19.99 [Member] |  |
Disclosure of range of exercise prices of outstanding share options [Line Items] |  |
Outstanding Number | shares | 2,691 |
Outstanding Weighted Average Remaining Contractual Life | 2 years 3 months 18 days |
Outstanding Weighted Average Exercise Price | $ / shares | $ 19.47 |
Exercisable Number | shares | 2,691 |
Exercisable Weighted Average Exercise Price | $ / shares | $ 19.47 |
20.00 to 24.99 [Member] |  |
Disclosure of range of exercise prices of outstanding share options [Line Items] |  |
Outstanding Number | shares | 3,078 |
Outstanding Weighted Average Remaining Contractual Life | 1 year 1 month 6 days |
Outstanding Weighted Average Exercise Price | $ / shares | $ 22.26 |
Exercisable Number | shares | 3,078 |
Exercisable Weighted Average Exercise Price | $ / shares | $ 22.26 |
25.00 to 29.99 [Member] |  |
Disclosure of range of exercise prices of outstanding share options [Line Items] |  |
Outstanding Number | shares | 8,540 |
Outstanding Weighted Average Remaining Contractual Life | 1 month 6 days |
Outstanding Weighted Average Exercise Price | $ / shares | $ 28.37 |
Exercisable Number | shares | 8,540 |
Exercisable Weighted Average Exercise Price | $ / shares | $ 28.37 |
30.00 to 34.99 [Member] |  |
Disclosure of range of exercise prices of outstanding share options [Line Items] |  |
Outstanding Number | shares | 571 |
Outstanding Weighted Average Remaining Contractual Life | 6 months |
Outstanding Weighted Average Exercise Price | $ / shares | $ 32.27 |
Exercisable Number | shares | 571 |
Exercisable Weighted Average Exercise Price | $ / shares | $ 32.27 |

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of share options outstanding in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45_d&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -Subparagraph b -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45_b_i&doctype=Standard -URIDate 2020-01-01 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -Subparagraph b -Clause vi -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45_b_vi&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_NumberOfOutstandingShareOptions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of share options exercisable in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -Subparagraph b -Clause vii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45_b_vii&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_NumberOfShareOptionsExercisableInSharebasedPaymentArrangement
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted average exercise price of share options exercisable in a share-based payment arrangement. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -Subparagraph b -Clause vii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45_b_vii&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement2019
Namespace Prefix: | ifrs-full_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted average exercise price of share options outstanding in a share-based payment arrangement. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -Subparagraph b -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45_b_i&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -Subparagraph b -Clause vi -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45_b_vi&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement2019
Namespace Prefix: | ifrs-full_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted average remaining contractual life of outstanding share options. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45_d&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=cve_NetSettlementRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsAxis=cve_FivePointZeroZeroToNinePointNineNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsAxis=cve_TenPointZeroZeroToFourteenPointNineNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsAxis=cve_FifteenPointZeroZeroToNineteenPointNineNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsAxis=cve_TwentyPointZeroZeroToTwentyFourPointNineNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsAxis=cve_TwentyFivePointZeroZeroToTwentyNinePointNineNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsAxis=cve_ThirtyPointZeroZeroToThirtyFourPointNineNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |