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CAPITAL MANAGEMENT (Details) - USD ($)
$ in Millions
 12 Months Ended
Sep. 23, 2020
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of detailed information about borrowings [line items]        
Cash and cash equivalents   $ 347.5 $ 367.1 $ 407.8
Credit facility available for use   418.5 387.0  
Common shares   3,070.6 2,732.1  
Capital Management Liabilities And Equity   4,339.1 3,969.1  
Unamortized deferred transaction costs   77.8 68.3  
Notes        
Disclosure of detailed information about borrowings [line items]        
Long-term debt   450.0 450.0  
Unamortized deferred transaction costs $ 7.5      
Notes | Unamortized deferred transactions costs        
Disclosure of detailed information about borrowings [line items]        
Unamortized deferred transaction costs   3.6 4.5  
Term Loan        
Disclosure of detailed information about borrowings [line items]        
Long-term debt   400.0 400.0  
Term Loan | Unamortized deferred transactions costs        
Disclosure of detailed information about borrowings [line items]        
Unamortized deferred transaction costs   3.7 8.2  
Equipment loans        
Disclosure of detailed information about borrowings [line items]        
Long-term debt   $ 2.1    
Equipment loans | Unamortized deferred transactions costs        
Disclosure of detailed information about borrowings [line items]        
Unamortized deferred transaction costs     $ 0.1