Post-Employment Benefits - Summary of Weighted Average Principal Assumptions Used to Determine Defined Benefit Obligation (Parenthetical) (Detail)	Oct. 31, 2025	Oct. 31, 2024
Canada plan [member]
Disclosure of defined benefit plans [line items]
Percentage of weighted average salary growth rate	2.50%	2.50%

The expected rate of salary increases used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [domain]; Defined benefit obligation, at present value; Actuarial assumptions [domain]]

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

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Data Type:	dtr-2022:percentItemType
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Period Type:	instant