v3.26.1
Other Long-Term Liabilities - Share-Based Compensation (Details) - CAD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Reconciliation Of Changes In Liabilities From Share-Based Payment Transactions [Roll Forward]      
Balance – beginning of year $ 620 $ 780 $ 832
Share-based compensation expense 180 279 491
Cash payment for stock options surrendered and PSUs vested (94) (84) (110)
Transferred to common shares (273) (358) (435)
Other 0 3 2
Balance – end of year 433 620 780
Liabilities from share-based payment transactions 433 620 780
Less: current portion 312 463 538
Non-current liabilities from share-based payment arrangements $ 121 $ 157 $ 242