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Goodwill and Other Intangible Assets - Summary of Intangible Assets (Detail) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2025 | Oct. 31, 2024
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance |  | $ 7,892 |  |
Impairment |  | 0 |  | $ 0
Ending balance |  | 7,584 |  | 7,892
Gross carrying amount [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance |  | 12,149 |  | 12,032
Additions |  | 637 |  | 841
Impairment |  | (199) | [1] | (188)
Disposals/Retirements |  | (206) |  | (538)
Foreign currency adjustments and other |  | 410 |  | 2
Ending balance |  | 12,791 |  | 12,149
Accumulated depreciation and amortisation [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance |  | (4,257) |  | (4,020)
Amortization |  | 896 |  | 1,030
Impairment |  | (9) | [1] | (91)
Disposals/Retirements |  | 68 |  | 614
Foreign currency adjustments and other |  | 131 |  | (88)
Ending balance |  | (5,207) |  | (4,257)
Fund management contracts [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | [2] | 4,415 |  |
Ending balance | [2] | 4,415 |  | 4,415
Fund management contracts [member] | Gross carrying amount [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | [2] | 4,415 |  | 4,415
Ending balance | [2] | 4,415 |  | 4,415
Indefinite life intangible assets [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance |  | 163 |  |
Ending balance |  | 163 |  | 163
Indefinite life intangible assets [member] | Gross carrying amount [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance |  | 163 |  | 163
Ending balance |  | 163 |  | 163
Computer software [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Impairment |  | 97 |  |
Computer software [member] | Finite life intangible assets [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | [3] | 3,033 |  |
Ending balance | [3] | 2,791 |  | 3,033
Computer software [member] | Finite life intangible assets [member] | Gross carrying amount [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance |  | 5,777 |  | 5,639
Additions |  | 637 |  | 840
Impairment |  | (199) | [1] | (188)
Disposals/Retirements |  | (170) |  | (538)
Foreign currency adjustments and other |  | 390 |  | 24
Ending balance |  | 6,435 |  | 5,777
Computer software [member] | Finite life intangible assets [member] | Accumulated depreciation and amortisation [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance |  | (2,744) |  | (2,566)
Amortization |  | 828 |  | 958
Impairment |  | (9) | [1] | (91)
Disposals/Retirements |  | 32 |  | 614
Foreign currency adjustments and other |  | 113 |  | (75)
Ending balance |  | (3,644) |  | (2,744)
Other intangible assets [member] | Finite life intangible assets [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance |  | 281 |  |
Ending balance |  | 215 |  | 281
Other intangible assets [member] | Finite life intangible assets [member] | Gross carrying amount [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance |  | 1,794 |  | 1,815
Additions |  |  |  | 1
Disposals/Retirements |  | (36) |  |
Foreign currency adjustments and other |  | 20 |  | (22)
Ending balance |  | 1,778 |  | 1,794
Other intangible assets [member] | Finite life intangible assets [member] | Accumulated depreciation and amortisation [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance |  | (1,513) |  | (1,454)
Amortization |  | 68 |  | 72
Disposals/Retirements |  | 36 |  |
Foreign currency adjustments and other |  | 18 |  | (13)
Ending balance |  | $ (1,563) |  | $ (1,513)
[1] | In the current year, the Bank recognized an impairment loss of $165 million pre-tax in relation to its agreement to sell banking operations in Colombia, Costa Rica and Panama. Refer to Note 35 for details.
[2] | Fund management contracts are attributable to the previously acquired Dynamic Funds business (formerly DundeeWealth Inc.), MD Financial Management Inc., and Jarislowsky Fraser Limited.
[3] | Computer software comprises purchased software of $262 (2024 – $194), internally generated software of $1,633 (2024 – $1,939), and in process software not subject to amortization of $896 (2024 – $900).

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