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Post-Employment Benefits - Summary of Assumed Health-care Cost Trend Rates (Detail) - Canada plan [member] - Actuarial assumption of medical cost trend rates [member] | 12 Months Ended
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Oct. 31, 2025 | Oct. 31, 2024
Disclosure of defined benefit plans [line items] |  |
Health-care cost trend rates assumed for next year | 4.90% | 4.90%
Rate to which the cost trend rate is assumed to decline | 4.00% | 4.00%
Year that the rate reaches the ultimate trend rate | 2040 | 2040

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- Definition Actuarial assumption of year rate reach ultimate trend rate. + References No definition available. + Details
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- Definition Medical cost trend rate used as significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [domain]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 144 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_144&doctype=Standard -URIDate 2024-03-27 + 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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- Definition The reasonably possible percentage of the decrease in the actuarial assumption used to determine the present value of defined benefit obligation. [Refer: Actuarial assumptions [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 145 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_145_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Details
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- Details
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