Securities (Summary of Equity Securities Net Realized Gains (Losses) Explanatory) (Details) - CAD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Jul. 31, 2026 |
Jul. 31, 2025 |
Jul. 31, 2026 |
Jul. 31, 2025 |
|
| Equity Securities [member] | ||||
| Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] | ||||
| Fair value | $ 167 | $ 63 | $ 376 | $ 189 |
| Cumulative realized gain/(loss) | 60 | 15 | 108 | (5) |
| FHLB stock [member] | ||||
| Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] | ||||
| Fair value | 54 | 664 | 85 | 1,201 |
| Cumulative realized gain/(loss) | $ 0 | $ 0 | $ 0 | $ 0 |