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Deposits - Summary of Maturity Schedule for Term Deposits (Detail) - Canada [member] - CAD ($) $ in Millions | Oct. 31, 2025 | Oct. 31, 2024
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Disclosure Of Deposits [line items] |  |  |
Term deposit | [1] | $ 274,151 | $ 295,433
Within three months [member] |  |  |
Disclosure Of Deposits [line items] |  |  |
Term deposit | [1] | 54,287 | 64,521
Three to six months [member] |  |  |
Disclosure Of Deposits [line items] |  |  |
Term deposit | [1] | 37,607 | 37,062
Six to twelve months [member] |  |  |
Disclosure Of Deposits [line items] |  |  |
Term deposit | [1] | 57,519 | 59,273
One to 5 years [member] |  |  |
Disclosure Of Deposits [line items] |  |  |
Term deposit | [1] | 109,573 | 115,757
Over 5 years [member] |  |  |
Disclosure Of Deposits [line items] |  |  |
Term deposit | [1] | $ 15,165 | $ 18,820
[1] | The majority of foreign term deposits are in excess of $100,000.

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