Loans, Impaired Loans, and Allowance for Credit Losses (Summary of Bank Loans) (Details) - CAD ($) $ in Millions |
Apr. 30, 2026 |
Oct. 31, 2025 |
Apr. 30, 2025 |
|---|---|---|---|
| Disclosure Of Banks Loans And Acceptances [Line Items] | |||
| Residential mortgages | $ 299,994 | $ 315,063 | |
| Consumer installment and other personal | 274,675 | 259,033 | |
| Credit card | 40,802 | 41,662 | |
| Business and government | 357,237 | 345,943 | |
| Total loans | 972,708 | 961,701 | |
| Loans at FVOCI | 393 | 288 | |
| Loans | 973,101 | 961,989 | |
| Total allowance for loan losses | 8,419 | 8,689 | $ 8,613 |
| Total loans, net of allowance | $ 964,682 | $ 953,300 |