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Interest Income and Expense - Details of Interest Income from Financial Assets (Detail) - CAD ($) $ in Millions | 12 Months Ended
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Oct. 31, 2025 | Oct. 31, 2024
Disclosure of Interest Income Expense [line items] |  |  |
Measured at amortized cost | [1] | $ 50,819 | $ 53,966
Measured at FVOCI | [1] | 5,585 | 5,905
Interest income calculated using effective interest method |  | 56,404 | 59,871
Other | [2] | 1,198 | 1,788
Total interest income | [3] | 57,602 | 61,659
Measured at amortized cost | [1] | 35,831 | 42,177
Interest expense calculated using effective interest method |  | 35,831 | 42,177
Other | [4] | 249 | 230
Total interest expenses |  | $ 36,080 | $ 42,407
[1] | The interest income/expense on financial assets/liabilities are calculated using the effective interest method.
[2] | Includes dividend income on equity securities.
[3] | Includes interest income on financial assets measured at amortized cost and FVOCI, calculated using the effective interest method, of $56,404 for the year ended October 31, 2025 (October 31, 2024 – $59,871).
[4] | Includes interest on lease liabilities of $125 (2024 – $119) and insurance finance expense of $33 (2024 – $30).

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- Definition The amount of expense arising from interest. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2024-01-01 -Paragraph 28 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_28_e&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2024-01-01 -Paragraph B13 -Subparagraph f -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B13_f&doctype=Appendix&subtype=B -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2024-01-01 -Paragraph 23 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_23_d&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of interest revenue (expense) recognised for financial liabilities that have been reclassified out of fair value through profit or loss category as a result of the transition to IFRS 9. [Refer: Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 42N -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_42N_b&doctype=Standard -URIDate 2024-03-27 + Details
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