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Other Assets - Summary of Other Assets (Detail) - CAD ($) $ in Millions | Oct. 31, 2025 | Oct. 31, 2024
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Disclosure of Other Assets [line items] |  |
Accrued interest receivable | $ 4,169 | $ 4,213
Precious metals | 6,492 | 4,195
Brokers' client accounts | 11,745 | 7,967
Current tax receivable | 2,912 | 2,611
Other prepayments | 595 | 588
Derivative collateral receivable | 8,132 | 7,067
Accounts receivable | 1,698 | 1,238
Carbon emission allowances | 649 | 11
Other | 1,735 | 1,594
Total | 39,805 | 30,862
Other assets [member] |  |
Disclosure of Other Assets [line items] |  |
Defined benefit asset (Note 17) | $ 1,678 | $ 1,378

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