Securities - Summary of Interest and Dividend Income and Gains on Securities (Details) - Insurance products - CAD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Apr. 30, 2026 |
Apr. 30, 2025 |
Apr. 30, 2026 |
Apr. 30, 2025 |
|
| Disclosure In Tabular Form Of Interest And Dividend Income On Securities And Gains On Securities In Respect Of Insurance Business [Line Items] | ||||
| Interest and dividend income | $ 150 | $ 133 | $ 296 | $ 269 |
| Losses from securities designated at FVTPL | (194) | (304) | (393) | (23) |
| Realized gains (losses) from FVOCI securities | (3) | 2 | (2) | 2 |
| Total interest and dividend income and gains held in our Insurance business | $ (47) | $ (169) | $ (99) | $ 248 |