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v3.25.3

Goodwill, Software and Other Intangible Assets - Additional Information (Detail) $ in Millions |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Aug. 01, 2025 | Aug. 01, 2024 | Oct. 31, 2025 CAD ($) | Oct. 31, 2024 CAD ($) | Oct. 31, 2023 CAD ($)
Disclosure of intangible assets material to entity [line items] |  |  |  |  |
Cash flow projection period |  |  | five-year |  |
Goodwill |  |  | $ 5,475 | $ 5,443 | $ 5,425
Intangible assets |  |  | 2,894 | 2,830 |
Contract-based [Member] |  |  |  |  |
Disclosure of intangible assets material to entity [line items] |  |  |  |  |
Intangible assets |  |  | 116 | 116 |
Cash-generating units [member] |  |  |  |  |
Disclosure of intangible assets material to entity [line items] |  |  |  |  |
Goodwill |  |  | 5,475 | 5,443 |
Canadian Personal and Small Business Banking [member] |  |  |  |  |
Disclosure of intangible assets material to entity [line items] |  |  |  |  |
Goodwill |  |  | 7 | 7 |
Net additions and of gross carrying amount |  |  | 5 | 1 |
Canadian Commercial Banking and Wealth Management [member] |  |  |  |  |
Disclosure of intangible assets material to entity [line items] |  |  |  |  |
Goodwill |  |  | 954 | 954 |
Net additions and of gross carrying amount |  |  | 0 | 1 |
U.S. Commercial Banking and Wealth Management [member] |  |  |  |  |
Disclosure of intangible assets material to entity [line items] |  |  |  |  |
Terminal growth rate | 4.40% | 4.50% |  |  |
Forecasted cash flows discounted at after-tax rate | 10.10% | 10.00% |  |  |
Forecasted cash flows discounted at pre-tax rate | 12.30% |  |  |  |
Goodwill |  |  | 4,349 | 4,318 |
Net additions and of gross carrying amount |  |  | 26 | 55 |
Capital Markets and Direct Financial Services [member] |  |  |  |  |
Disclosure of intangible assets material to entity [line items] |  |  |  |  |
Goodwill |  |  | 64 | 64 |
Net additions and of gross carrying amount |  |  | 1 | 1 |
Corporate and Other [member] |  |  |  |  |
Disclosure of intangible assets material to entity [line items] |  |  |  |  |
Goodwill |  |  | 101 | 100 |
Net additions and of gross carrying amount |  |  | 596 | $ 39 |
Canadian wealth management [member] |  |  |  |  |
Disclosure of intangible assets material to entity [line items] |  |  |  |  |
Impairment loss |  |  | $ 0 |  |
Low end level of price-to-earnings multiples | 7.3 | 5.7 |  |  |
High end level of price-to-earnings multiples | 14.6 | 12.4 |  |  |

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