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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
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-IssueDate 2025-01-01
-Paragraph 55
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-URIDate 2025-03-27

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

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Disclosure of fair value measurement of assets and liabilities.

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Gains Losses Recognised In Other Comprehensive Income Excluding Foreign Currency Translation Fair Value Measurement Assets

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Fair value of financial instruments - Changes in Fair Value Measurement for Instruments Measured on a Recurring Basis and Categorized in Level 3 (Parenthetical) (Detail) - CAD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2026	Apr. 30, 2025	Apr. 30, 2026	Apr. 30, 2025	Oct. 31, 2025
Disclosure of fair value measurement of assets and liabilities [line Items]
Derivative assets	$ 150,745		$ 150,745		$ 177,206
Derivative liabilities	156,627		156,627		183,953
Recurring [member]
Disclosure of fair value measurement of assets and liabilities [line Items]
Derivative assets	150,745		150,745		177,206
Derivative liabilities	156,627		156,627		$ 183,953
Investment [member] \| Level 3 [member] \| Recurring [member]
Disclosure of fair value measurement of assets and liabilities [line Items]
Unrealized gains (losses), excluding foreign currency translation, recognized in OCI	13	$ 16	16	$ 31
Net derivative balances, category [Member] \| Level 3 [member] \| Recurring [member]
Disclosure of fair value measurement of assets and liabilities [line Items]
Derivative assets	359	395	359	395
Derivative liabilities	$ 1,394	$ 1,337	$ 1,394	$ 1,337