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Consolidated statement of income (Parenthetical) - CAD ($)
$ in Billions
3 Months Ended 6 Months Ended
Apr. 30, 2025
Jan. 31, 2025
Apr. 30, 2024
Apr. 30, 2025
Apr. 30, 2024
Profit or loss [abstract]          
Interest income calculated based on effective interest method $ 10.7 $ 11.5 $ 11.9 $ 22.3 $ 23.9