Financial Instruments and Risk Management - Credit Risk (Details) - CAD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Credit Risk
Financial Instruments and Risk Management
Net exposure	$ 65	$ 143

The amount of risk exposure associated with financial instruments with a shared characteristic that identifies a concentration of risks. [Refer: Financial instruments, class [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph B8
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_B8_c&doctype=Appendix&subtype=B
-URIDate 2023-03-23

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant