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Stock-Based Compensation Plans - Narrative (Detail) - $ / shares	9 Months Ended
	Sep. 30, 2023	Feb. 28, 2023
Minimum
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Performance share unit plan, vesting multiplier, percent		0.00%
Maximum
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Performance share unit plan, vesting multiplier, percent		200.00%
Stock Options With Associated Net Settlement Rights
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Weighted average exercise price (in CAD per share)	$ 13.62
Common shares issued in exercise of other equity instruments (in shares)	49,000
Cenovus Replacement Stock Options
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Weighted average exercise price (in CAD per share)	$ 6.52
Common shares issued in exercise of other equity instruments (in shares)	2,000

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Common shares issued in exercise of other equity instruments

+ References

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- Definition

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- Definition

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- 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 2023-01-01
-Paragraph 45
-Subparagraph b
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_45_b_i&doctype=Standard
-URIDate 2023-03-23

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2023-01-01
-Paragraph 45
-Subparagraph b
-Clause vi
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_45_b_vi&doctype=Standard
-URIDate 2023-03-23

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