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BUSINESS COMBINATIONS AND INVESTMENTS - Summary of investments accounted for using the equity method (Details) - CAD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Investments Accounted For Using Equity Method [Abstract]    
Investment in associates $ 229.1 $ 272.1
Investment in joint ventures 89.9 54.5
Total $ 319.0 $ 326.6