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Employee Compensation - Pension and Other Employee Future Benefits - Summary of Duration of Defined Benefit Obligation (Detail) - yr | 12 Months Ended
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Oct. 31, 2025 | Oct. 31, 2024
Pension Plans [member] | Canada [member] |  |
Disclosure of defined benefit plans [line items] |  |
Duration of defined benefit obligation | 13.1 | 13
Pension Plans [member] | United States [member] |  |
Disclosure of defined benefit plans [line items] |  |
Duration of defined benefit obligation | 7.3 | 7.5
Other employee future benefit plans [member] |  |
Disclosure of defined benefit plans [line items] |  |
Duration of defined benefit obligation | 11.4 | 11.7

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- Definition Duration of defined benefit obligation. + References No definition available. + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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Period Type: |