Loans - Additional Information (Detail) - CAD ($) $ in Millions |
Jan. 31, 2023 |
Oct. 31, 2022 |
|---|---|---|
| Downside Scenario [Member] | ||
| Disclosure of detailed information about borrowings [line items] | ||
| ECL expected value | $ 1,158 | $ 847 |
| Probability weighting percentage | 100.00% | |
| Base Scenario [Member] | ||
| Disclosure of detailed information about borrowings [line items] | ||
| ECL expected value | $ 247 | $ 248 |
| Probability weighting percentage | 100.00% |