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Stock-Based Compensation Plans - Summary of Information Related to Cenovus's Stock-Based Compensation Plans (Detail) shares in Thousands | 9 Months Ended
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Sep. 30, 2025 shares $ / shares
Stock Options With Associated Net Settlement Rights |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] |
Number of share options, outstanding (in shares) | 11,171
Number of share options, exercisable (in shares) | 5,190
Number of share options, granted (in shares) | 4,384
Number of shares issued for stock options exercised (in shares) | 1,080
Number of share units, vested and exercised/paid out (in shares) | 752
Weighted average exercise price of other equity instruments exercised or vested in share-based payment arrangement (in CAD per share) | $ / shares | $ 12.14
Weighted average exercise price of other equity instruments exercised or vested in share-based payment arrangement, settled for common shares (in CAD per share) | $ / shares | $ 9.48
Number of other equity instruments exercised or vested in share-based payment arrangement, settled for common shares (in shares) | 328
Cenovus Replacement Stock Options |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] |
Number of share options, granted (in shares) | 0
Number of shares issued for stock options exercised (in shares) | 329
Number of share units, vested and exercised/paid out (in shares) | 317
Weighted average exercise price of other equity instruments exercised or vested in share-based payment arrangement (in CAD per share) | $ / shares | $ 3.54
Weighted average exercise price of other equity instruments exercised or vested in share-based payment arrangement, settled for common shares (in CAD per share) | $ / shares | $ 3.54
Number of other equity instruments exercised or vested in share-based payment arrangement, settled for common shares (in shares) | 12
Performance Share Units |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] |
Number of share units, outstanding (in shares) | 7,542
Number of share units, exercisable (in shares) | 0
Number of share units, granted (in shares) | 3,357
Number of share units, vested and exercised/paid out (in shares) | 2,303
Restricted Share Units |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] |
Number of share units, outstanding (in shares) | 10,052
Number of share units, exercisable (in shares) | 0
Number of share units, granted (in shares) | 4,353
Number of share units, vested and exercised/paid out (in shares) | 1,955
Deferred Share Units |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] |
Number of share units, outstanding (in shares) | 2,006
Number of share units, exercisable (in shares) | 2,006
Number of share units, granted (in shares) | 358
Number of share units, vested and exercised/paid out (in shares) | 169

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