v3.25.4
PROPERTY, PLANT AND EQUIPMENT - Narrative (Details) - CAD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Property, plant and equipment [abstract]    
Government grants $ 73 $ 134
Proceeds from government grants $ 55 $ 59
Property, plant and equipment, weighted average capitalised interest rate 4.80% 4.20%
Adjustment to cost and accumulated depreciation $ 1,230 $ 1,281