RELATED PARTY TRANSACTIONS - Subsidiary Transactions (Details) - Subsidiaries - CAD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Disclosure of transactions between related parties [line items]
Revenue	$ 36	$ 74
Purchases	203	194
Accounts receivable	97	87
Accounts payable and accrued liabilities	$ 113	$ 138

The amounts payable resulting from related party transactions. [Refer: Related parties [member]]

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- Definition

The amounts receivable resulting from related party transactions. [Refer: Related parties [member]]

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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The amount of goods purchased by the entity in related party transactions. [Refer: Related parties [member]]

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