v3.26.1
STOCK-BASED COMPENSATION PLANS - Liability and expense (Details) - CAD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
STOCK-BASED COMPENSATION PLANS      
Liability for all vested options under intrinsic value $ 7.7 $ 0.4  
Consolidated charge related to stock-based compensation $ 37.3 $ 1.4 $ 2.9