Securities - Summary of Non-Interest Revenue (Details) - CAD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Jul. 31, 2026 |
Jul. 31, 2025 |
Jul. 31, 2026 |
Jul. 31, 2025 |
|
| Disclosure of Securities [Abstract] | ||||
| FVTPL securities | $ 35 | $ 36 | $ 163 | $ 132 |
| FVOCI securities - net realized gains | 14 | 13 | 60 | 42 |
| Impairment (loss) recovery on FVOCI and amortized cost securities | 4 | 0 | 1 | (1) |
| Securities gains, other than trading | $ 53 | $ 49 | $ 224 | $ 173 |