Capital Management - Summary of Regulatory Capital Measure and Risk-Weighted Assets (Details) - CAD ($) $ in Millions |
Apr. 30, 2026 |
Oct. 31, 2025 |
|---|---|---|
| Disclosure of Capital Management [Abstract] | ||
| CET1 Capital | $ 57,838 | $ 58,286 |
| Tier 1 Capital | 65,410 | 65,890 |
| Total Capital | 74,844 | 75,562 |
| TLAC | 128,639 | 129,957 |
| Risk-Weighted Assets | 443,711 | 437,945 |
| Leverage Exposures | $ 1,528,717 | $ 1,521,813 |
| CET1 Ratio | 13.00% | 13.30% |
| Tier 1 Capital Ratio | 14.70% | 15.00% |
| Total Capital Ratio | 16.90% | 17.30% |
| TLAC Ratio | 29.00% | 29.70% |
| Leverage Ratio | 4.30% | 4.30% |
| TLAC Leverage Ratio | 8.40% | 8.50% |