v3.26.1
GOODWILL (Details) - CAD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Changes in net carrying amount of goodwill    
Goodwill $ 550.1 $ 550.1
Cost    
Changes in net carrying amount of goodwill    
Goodwill 618.6 618.6
Accumulated impairment losses    
Changes in net carrying amount of goodwill    
Goodwill $ (68.5) $ (68.5)