Loans, Impaired Loans, and Allowance for Credit Losses (Schedule of Change from Base to Probability-Weighted ECL) (Details) - CAD ($) $ in Millions |
Jul. 31, 2026 |
Oct. 31, 2025 |
|---|---|---|
| Disclosure of detailed information about financial instruments [line items] | ||
| Difference - in amount | $ 543 | $ 400 |
| Expected credit loss rate | 7.20% | 5.20% |
| Probability weighted method [member] | ||
| Disclosure of detailed information about financial instruments [line items] | ||
| Probability-weighted ECLs | $ 8,106 | $ 8,137 |
| Base Scenario [member] | ||
| Disclosure of detailed information about financial instruments [line items] | ||
| Base ECLs | $ 7,563 | $ 7,737 |