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Other Operating Income (Expense)
 12 Months Ended
Dec. 31, 2024
Analysis of income and expense [abstract]  
Other Operating Income (Expense)
10. Other Operating Income (Expense)

(CAD$ in millions)20242023
Settlement pricing adjustments (Note 34(b))
$65 $7 
Share-based compensation (Note 29(e))
(91)(81)
Environmental costs and remeasurement of decommissioning and restoration
   provisions for closed operations		— (119)
Care and maintenance costs(51)(39)
Social responsibility and donations(59)(62)
Gain on disposal or contribution of assets
27 183 
Impairment of intangible assets
(37)(88)
Commodity derivatives
90 (12)
Depreciation of corporate assets
(47)(41)
Take-or-pay contract costs(10)(30)
Other(38)(109)
$(151)$(391)