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Securities - Summary of Securities (Parenthetical) (Detail) - CAD ($) $ in Millions | 3 Months Ended
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Apr. 30, 2025 | Oct. 31, 2024
Debt securities [member] | Financial assets at amortised cost, category [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Realized gain (loss) on disposal of debt securities | $ 0 | $ 0

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- Definition The gains (losses) on disposals of investments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 98 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_98_d&doctype=Standard -URIDate 2024-03-27 + Details
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- Details
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