v3.26.1
Interest Income and Expense - Details of Interest Income from Financial Assets (Parenthetical) (Detail) - CAD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2026
Jan. 31, 2026
Apr. 30, 2025
Apr. 30, 2026
Apr. 30, 2025
Expenses by nature [abstract]          
Interest expense on lease liabilities $ 39 $ 31 $ 31 $ 70 $ 63
Insurance finance expense $ 8 $ 8 $ 9 $ 16 $ 17