v3.25.4
Share-based payments - Share-based Payment Amounts Included in the Income Statements as Operating Costs (Details) - CAD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Total share-based payments $ (90) $ (84)
RSUs and PSUs    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Total share-based payments (61) (52)
ESP and DSUs    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Total share-based payments $ (29) $ (32)