Consolidated statement of comprehensive income (Parenthetical) - CAD ($) $ in Millions	3 Months Ended	9 Months Ended
Jul. 31, 2024	Apr. 30, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023
Statement of comprehensive income [abstract]
Gains (losses) on investments in equity-accounted associates and joint ventures included in OCI	$ 14	$ 1	$ (6)	$ 68	$ 55

Share of the other comprehensive income of associates and joint ventures accounted for using the equity method that will be reclassified to profit or loss, net of tax.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 82A
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_82A&doctype=Standard
-URIDate 2023-03-23

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