Securities (Narrative) (Details) - CAD ($) $ in Millions |
Apr. 30, 2026 |
Oct. 31, 2025 |
|---|---|---|
| Disclosure of detailed information about financial instruments [line items] | ||
| Debt Securities Held Net of allowance | $ 363,561 | $ 363,473 |
| Debt securities at amortized cost [member] | ||
| Disclosure of detailed information about financial instruments [line items] | ||
| Debt Securities Held Net of allowance | 238,677 | 240,439 |
| Debt securities FVOCI [member] | ||
| Disclosure of detailed information about financial instruments [line items] | ||
| Debt Securities Held Net of allowance | $ 124,884 | $ 123,034 |