v3.25.4
Leases (Additional Information for Leases) (Details) - CAD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Cash paid for amounts included in the measurement of lease liabilities ($)      
Operating cash outflows from operating leases $ 153 $ 152 $ 148
Financing cash outflows from finance leases 2 31 2
Right-of-use assets obtained in exchange for lease liabilities ($)      
Operating lease 85 234 91
Finance lease $ 0 $ 0 $ 30