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Related Party Transactions - Additional Information (Detail) - CAD ($) $ in Millions | 12 Months Ended
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Oct. 31, 2025 | Oct. 31, 2024
Disclosure of transactions between related parties [line items] |  |
Wealth Management Assets | $ 6,400.0 | $ 6,000.0
Revenue From Rendering Of Services Related Party Transactions | 7.0 | 6.7
Directors [member] |  |
Disclosure of transactions between related parties [line items] |  |
Exposure to credit risk on loan commitments and financial guarantee contracts | 263.0 | 267.0
Utilized credit exposure | $ 186.0 | $ 199.0

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- Definition Utilized credit exposure. + References No definition available. + Details
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- Definition Wealth management assets. + References No definition available. + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of the exposure to credit risk on loan commitments and financial guarantee contracts. [Refer: Loan commitments [member]; Financial guarantee contracts [member]; Credit risk [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35H -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35H&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35M -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35M&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35I -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35I&doctype=Standard -URIDate 2024-03-27 + Details
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Period Type: | instant

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- Definition The amount of revenue arising from the rendering of services in related party transactions. [Refer: Revenue; Total for all related parties [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 24 -IssueDate 2024-01-01 -Paragraph 21 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_21_c&doctype=Standard -URIDate 2024-03-27 + Details
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- Details
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