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IFRS 7 - Disclosure - Market Risk - Summary of Structural Interest Rate Sensitivity - Measures (Detail) - CAD ($) $ in Millions | 3 Months Ended
--- | ---
Jan. 31, 2025 | Oct. 31, 2024 | Jan. 31, 2024
100 basis point increase in interest rates [member] |  |  |
Disclosure foreign currency sensitivity analysis effect on equity [line items] |  |  |
Increase (decrease) in net interest income | $ 150 | $ 204 | $ 277
Increase (decrease) in EVE | (1,515) | (1,356) | (1,150)
100 basis point decrease in interest rates [member] |  |  |
Disclosure foreign currency sensitivity analysis effect on equity [line items] |  |  |
Increase (decrease) in net interest income | (218) | (242) | (328)
Increase (decrease) in EVE | 1,439 | 1,237 | 1,087
Canadian currency [member] | 100 basis point increase in interest rates [member] |  |  |
Disclosure foreign currency sensitivity analysis effect on equity [line items] |  |  |
Increase (decrease) in net interest income | 109 | 159 | 163
Increase (decrease) in EVE | (1,061) | (956) | (787)
Canadian currency [member] | 100 basis point decrease in interest rates [member] |  |  |
Disclosure foreign currency sensitivity analysis effect on equity [line items] |  |  |
Increase (decrease) in net interest income | (174) | (193) | (217)
Increase (decrease) in EVE | 975 | 829 | 708
Denominated in U.S. dollars [member] | 100 basis point increase in interest rates [member] |  |  |
Disclosure foreign currency sensitivity analysis effect on equity [line items] |  |  |
Increase (decrease) in net interest income | 41 | 45 | 114
Increase (decrease) in EVE | (454) | (400) | (363)
Denominated in U.S. dollars [member] | 100 basis point decrease in interest rates [member] |  |  |
Disclosure foreign currency sensitivity analysis effect on equity [line items] |  |  |
Increase (decrease) in net interest income | (44) | (49) | (111)
Increase (decrease) in EVE | $ 464 | $ 408 | $ 379

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