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Securities - Summary of Non-Interest Revenue (Detail) - CAD ($) $ in Millions		12 Months Ended
		Oct. 31, 2025	Oct. 31, 2024
Interest Dividend and Fee Income [abstract]
FVTPL securities		$ 201	$ 87
FVOCI securities – realized gains	[1]	89	114
Impairment on FVOCI and amortized cost securities		(3)	(1)
Securities gains, other than trading		$ 287	$ 200
[1] Gains are net of (losses) on hedge contracts.

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Impairment loss recovery on financial assets at fair value through other comprehensive income and amortized cost securities.

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Interest Dividend and Fee Income [abstract]

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- Definition

Non Trading Securities At Fair Value Through Profit Or Loss Non Interest Revenue

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Securities at fair value through other comprehensive income realized gains.

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Securities gains, other than trading.

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