v3.26.1
employee future benefits - Defined contribution pension plans expense (Details) - CAD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
employee future benefits        
Union pension plan contributions $ 3 $ 3 $ 6 $ 6
Other defined contribution pension plans 28 29 56 57
Total $ 31 $ 32 $ 62 $ 63