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Loans, Impaired Loans and Allowance for Credit Losses - Summary of Purchased Credit Impaired Loans (Detail) - CAD ($) $ in Millions | Oct. 31, 2025 | Oct. 31, 2024 | Oct. 31, 2023
--- | --- | --- | ---
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Allowance |  | $ (7,639) | $ (6,723) | $ (6,611)
Loans acquired in business combination [member] |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Unpaid principal balance | [1] | 224 | 243 |
Credit related fair value adjustments |  | (24) | (29) |
Carrying value |  | 200 | 214 |
Carrying value net of related allowance |  | 199 | 213 |
Loans acquired in business combination [member] | Stage 3 [member] |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Allowance |  | $ (1) | $ (1) |
[1] | Represents principal amount owed net of write-offs.

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- Definition Credit related fair value adjustments on purchased credit-impaired loans. + References No definition available. + Details
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- Definition Gross Carrying Value Of Loans Individually Impaired + References No definition available. + Details
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- Definition Acquired Loans identified as impaired at acquisition net of allowance for loan losses. + References No definition available. + Details
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- Definition Unpaid principal balance of purchased credit-impaired loans. + References No definition available. + Details
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- Definition The amount of the loss allowance the entity has made on loans and advances that are measured in accordance with paragraph 4.1.2 of IFRS 9. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + Details
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- Details
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- Details
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