Derivative Instruments - Summary of Derivative Instruments (Detail) - CAD ($) $ in Millions	Oct. 31, 2025	Oct. 31, 2024
Statement [Line Items]
Assets, Trading (Note 2)	$ 34,032	$ 33,485
Assets, ALM (Note 2)	4,320	2,950
Assets	38,352	36,435
Liabilities, Trading (Note 2)	39,237	39,847
Liabilities, ALM (Note 2)	2,174	807
Liabilities	$ 41,411	$ 40,654

No definition available.

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- Definition

The amount of financial assets classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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+ Details

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- Definition

The amount of derivative financial assets held for hedging. [Refer: Derivative financial assets]

+ References

+ Details

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- Definition

The amount of derivative financial assets held for trading. [Refer: Derivative financial assets; Financial assets at fair value through profit or loss, classified as held for trading]

+ References

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- Definition

The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

+ References

+ Details

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- Definition

The amount of derivative financial liabilities held for hedging. [Refer: Derivative financial liabilities]

+ References

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- Definition

The amount of derivative financial liabilities held for trading. [Refer: Derivative financial liabilities; Financial liabilities at fair value through profit or loss that meet definition of held for trading]

+ References

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