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Derivative Instruments - Schedule of Fair Value of Derivative Instruments (Parenthetical) (Detail) - CAD ($) $ in Millions | Oct. 31, 2025 | Oct. 31, 2024
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Hedging Derivatives [Member] | Interest rate contracts [member] |  |
Disclosure Of Derivative Financial Instruments [Line Items] |  |
Net fair value of bonds designated as fair value hedges | $ 0 | $ 0

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- Definition Disclosure Of Derivative Financial Instruments [Line Items] + References No definition available. + Details
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- Definition Net fair value of bonds designated as fair value hedges. + References No definition available. + Details
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- Details
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Namespace Prefix: |
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- Details
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