Loans, Impaired Loans and Allowance for Credit Losses - Impaired Loans (Parenthetical) (Detail) - CAD ($) $ in Millions |
3 Months Ended | ||
|---|---|---|---|
Apr. 30, 2026 |
Jan. 31, 2026 |
Oct. 31, 2025 |
|
| Impaired loans [abstract] | |||
| Interest income recognized on impaired loans | $ 29 | $ 28 | $ 23 |