Loans, Impaired Loans, and Allowance for Credit Losses (Summary of Credit Quality) (Details) - CAD ($) $ in Millions |
Jul. 31, 2026 |
Oct. 31, 2025 |
Jul. 31, 2025 |
|---|---|---|---|
| Loans To Business And Government [Line Items] | |||
| Loans | $ 999,918 | $ 961,989 | |
| Allowance for loan losses | 8,508 | 8,689 | $ 8,682 |
| Total loans, net of allowance | 991,410 | 953,300 | |
| Business And Government [Member] | |||
| Loans To Business And Government [Line Items] | |||
| Loans at amortized cost | 373,421 | 345,943 | |
| Loans at FVOCI | 374 | 288 | |
| Loans | 373,795 | 346,231 | |
| Allowance for loan losses | 3,629 | 3,847 | |
| Total loans, net of allowance | $ 370,166 | $ 342,384 |