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Commitments, Guarantees, Pledged Assets, Provisions and Contingent Liabilities - Summary of Pledged Assets collateral and Activities (Parenthetical) (Detail) - CAD ($) $ in Millions | Oct. 31, 2025 | Oct. 31, 2024
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Disclosure commitments guarantees pledged assets provisions and contingent liabilities [line items] |  |
Assets pledged as collateral | $ 430,416 | $ 371,350
Federal Home Loan Bank Loans [member] |  |
Disclosure commitments guarantees pledged assets provisions and contingent liabilities [line items] |  |
Assets pledged as collateral | 16,734 | 21,235
Bank assets [member] |  |
Disclosure commitments guarantees pledged assets provisions and contingent liabilities [line items] |  |
Assets pledged as collateral | 245,657 | 221,366
Bank assets [member] | Securities [member] | NHA mortgaged back securities [member] |  |
Disclosure commitments guarantees pledged assets provisions and contingent liabilities [line items] |  |
Assets pledged as collateral | $ 6,690 | $ 5,492

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- Definition Line items represent commitments guarantees pledged assets provisions and contingent liabilities. + References No definition available. + Details
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- Definition The amount of financial assets that the entity has pledged as collateral for liabilities or contingent liabilities, including amounts that have been reclassified in accordance with paragraph 3.2.23(a) of IFRS 9. [Refer: Classes of contingent liabilities [domain]; Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 14 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_14_a&doctype=Standard -URIDate 2024-03-27 + Details
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