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v3.25.3

Goodwill and Other Intangible Assets - Additional Information (Detail) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2025 CAD ($) | Oct. 31, 2024 CAD ($)
Disclosure of intangible assets and goodwill [Line Items] |  |
Impairment of goodwill | $ 0 |
Period of discounted cash flow method for calculating value in use | 5 |
Terminal growth rate | 4.50% | 4.50%
Cash flows discounted rate | 10.00% | 10.00%
Impairment of finite lived intangible assets | $ 0 | $ 0
Financial forecast of profit (loss) for cash-generating unit, measurement input [member] |  |
Disclosure of intangible assets and goodwill [Line Items] |  |
Significant unobservable input assets percentage of reasonably possible decrease | 5.00% |
Price earning multiple [member] |  |
Disclosure of intangible assets and goodwill [Line Items] |  |
Significant unobservable input assets percentage of reasonably possible decrease | 1.00% |
Computer software [member] |  |
Disclosure of intangible assets and goodwill [Line Items] |  |
Impairment of finite lived intangible assets | $ 97 |
Latin America [member] |  |
Disclosure of intangible assets and goodwill [Line Items] |  |
Terminal growth rate |  | 3.00%
Cash flows discounted rate |  | 12.00%
Term of cash flow forecast | 5 years |
Bottom of range [member] |  |
Disclosure of intangible assets and goodwill [Line Items] |  |
Price earnings multiples used |  | 11
Price earnings ratio multiple | 9.5 |
Top of range [member] |  |
Disclosure of intangible assets and goodwill [Line Items] |  |
Price earnings multiples used |  | 11.5
Price earnings ratio multiple | 13 |

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