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OTHER LIABILITIES (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Disclosure of detailed information about financial instruments [line items]    
Total other liabilities $ 28.4 $ 29.6
Yatela liability 18.5 18.5
Current portion of other liabilities 27.7 29.6
Non-current portion of other liabilities 0.7 0.0
Hedge derivatives    
Disclosure of detailed information about financial instruments [line items]    
Total other liabilities 9.8 9.2
Non-hedge derivatives    
Disclosure of detailed information about financial instruments [line items]    
Total other liabilities 0.0 1.9
Other liabilities    
Disclosure of detailed information about financial instruments [line items]    
Total other liabilities $ 0.1 $ 0.0