Property and Equipment - Summary of Property and Equipment (Parenthetical) (Detail) - CAD ($) $ in Millions	Oct. 31, 2025	Oct. 31, 2024
Disclosure of detailed information about property, plant and equipment [abstract]
Work-in-progress not subject to depreciation	$ 427	$ 196

The amount of expenditure capitalised during the construction of non-current assets that are not yet available for use. [Refer: Non-current assets]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 16
-IssueDate 2024-01-01
-Paragraph 37
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_37&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_ConstructionInProgress
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant