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Goodwill and Other Intangible Assets - Summary of Changes In The Carrying Amounts of Goodwill By Groups of Cash Generating Units (Detail) - CAD ($) $ in Millions | 12 Months Ended
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Oct. 31, 2025 | Oct. 31, 2024
Disclosure of reconciliation of changes in goodwill [line items] |  |  |  |  |
Begining balance |  | $ 8,961 |  | $ 9,181 |
Dispositions |  | (589) | [1] | (92) | [2]
Foreign currency adjustments and other |  | 213 |  | (128) |
Ending balance |  | 8,585 |  | 8,961 |
Canadian banking [member] |  |  |  |  |
Disclosure of reconciliation of changes in goodwill [line items] |  |  |  |  |
Begining balance |  | 1,690 |  | 1,690 |
Ending balance |  | 1,690 |  | 1,690 |
Global wealth management [member] |  |  |  |  |
Disclosure of reconciliation of changes in goodwill [line items] |  |  |  |  |
Begining balance |  | 3,614 |  | 3,610 |
Foreign currency adjustments and other |  | 27 |  | 4 |
Ending balance |  | 3,641 |  | 3,614 |
Global banking and markets [member] |  |  |  |  |
Disclosure of reconciliation of changes in goodwill [line items] |  |  |  |  |
Begining balance |  | 246 |  | 246 |
Foreign currency adjustments and other |  | 1 |  |  |
Ending balance |  | 247 |  | 246 |
Latin America [member] |  |  |  |  |
Disclosure of reconciliation of changes in goodwill [line items] |  |  |  |  |
Begining balance |  | 2,400 |  | 2,630 |
Dispositions |  | (195) | [1] | (92) | [2]
Foreign currency adjustments and other |  | 180 |  | (138) |
Ending balance |  | 2,385 |  | 2,400 |
Caribbean and central america [member] |  |  |  |  |
Disclosure of reconciliation of changes in goodwill [line items] |  |  |  |  |
Begining balance |  | 1,011 |  | 1,005 |
Dispositions | [1] | (394) |  |  |
Foreign currency adjustments and other |  | 5 |  | 6 |
Ending balance |  | $ 622 |  | $ 1,011 |
[1] | In the current year, the Bank recorded a goodwill write-down of $589 million pre-tax within the Latin America and Caribbean & Central America CGUs in relation to its agreement to sell banking operations in Colombia, Costa Rica and Panama. Refer to Note 35 for details.
[2] | In fiscal 2024, the Bank recorded a goodwill write-down of $92 million pre-tax within the Latin America CGU in relation to its agreement to sell CrediScotia Financiera, a subsidiary in Peru. Refer to Note 35 for details.

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- Definition The decrease in goodwill due to classification as held for sale. [Refer: Goodwill; Disposal groups classified as held for sale [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2024-01-01 -Paragraph B67 -Subparagraph d -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B67_d_iv&doctype=Appendix&subtype=B -URIDate 2024-03-27 + Details
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- Definition The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Total for all business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2024-01-01 -Paragraph 134 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_134_a&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2024-01-01 -Paragraph 135 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_135_a&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2024-01-01 -Paragraph B67 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B67_d&doctype=Appendix&subtype=B -URIDate 2024-03-27 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 54 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_c&doctype=Standard -URIDate 2024-03-27 + Details
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