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Land, Buildings, Equipment, Other Depreciable Assets, and Right-Of-Use Assets (Summary of Land, Buildings, Equipment, and Other Depreciable Assets) (Parenthetical) (Details) - CAD ($)
$ in Millions
12 Months Ended
Oct. 31, 2025
Oct. 31, 2024
Land, Buildings, Equipment, Other Depreciable Assets, and Right-Of-Use Assets [Abstract]    
Cash received from disposals $ 3 $ 22