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DEBT FACILITIES - Narrative (Details)
$ in Millions, $ in Millions
1 Months Ended 12 Months Ended
Dec. 31, 2024
USD ($)
Mar. 31, 2025
CAD ($)
Mar. 31, 2024
CAD ($)
Sep. 30, 2024
USD ($)
Disclosure of detailed information about borrowings [line items]        
Repayment of long-term debt   $ 321.3 $ 370.4  
Revolving credit facilities, variable rate        
Disclosure of detailed information about borrowings [line items]        
Notional amount       $ 1,000.0
Unsecured term loan, variable rate        
Disclosure of detailed information about borrowings [line items]        
Notional amount $ 200.0      
Unsecured senior notes, fixed rate        
Disclosure of detailed information about borrowings [line items]        
Repayment of long-term debt $ 127.0