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PROPERTY, PLANT AND EQUIPMENT - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Sep. 23, 2020
Disclosure of detailed information about property, plant and equipment [line items]      
Quoted borrowing costs capitalised $ 113.5 $ 49.0  
Borrowing costs capitalized, weighted average interest rate 7.38% 5.82%  
5.75% senior notes | Fixed interest rate      
Disclosure of detailed information about property, plant and equipment [line items]      
Interest rate 5.75% 5.75% 5.75%
Mining properties      
Disclosure of detailed information about property, plant and equipment [line items]      
Mining properties, stripping costs capitalized $ 199.2 $ 196.6  
Mining properties, stripping costs capitalized during period 87.9 109.7  
Mining properties, stripping costs, depreciation expense $ 85.3 $ 105.0