Current And Future Changes In Accounting Policies (Schedule of Adjustments to Insurance-Related Balance Reported Under IFRS 4) (Details) - CAD ($) $ in Millions	Oct. 31, 2025	Oct. 31, 2024
Disclosure Of Reconciliation Of Changes In Insurance Contracts By Components [Line Items]
Insurance-related liabilities	$ 7,278	$ 7,169

The amount of insurance contracts that are liabilities. [Refer: Liabilities; Insurance contracts [domain]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 17
-IssueDate 2024-01-01
-Paragraph 99
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2024-en-r&anchor=para_99_b&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_InsuranceContractsThatAreLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant