Contingencies (Detail) $ in Millions	12 Months Ended
Dec. 31, 2023 CAD ($)
Disclosure of contingent liabilities [abstract]
Other operating income (expense)	$ 221

The gain on the recovery of loans and advances previously written off.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 85
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_85&doctype=Standard
-URIDate 2023-03-23

Name:	ifrs-full_GainOnRecoveryOfLoansAndAdvancesPreviouslyWrittenOff
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration