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Derivative Financial Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of detailed information about hedged items [line items]      
Total derivative financial liabilities   $ 6.8 $ 29.1
Non-current derivative financial liabilities   0.0 (7.3)
Derivative financial liabilities   6.8 21.8
Salares Norte foreign currency derivative contracts      
Disclosure of detailed information about hedged items [line items]      
Total derivative financial liabilities   6.8 0.0
Ghanaian oil derivative contracts      
Disclosure of detailed information about hedged items [line items]      
Total derivative financial liabilities   0.0 10.0
Ghanaian oil derivative contracts | Forecast      
Disclosure of detailed information about hedged items [line items]      
Financial liabilities oil derivative contracts $ 4.7    
Australian oil derivative contracts      
Disclosure of detailed information about hedged items [line items]      
Total derivative financial liabilities   0.0 5.1
Australian oil derivative contracts | Forecast      
Disclosure of detailed information about hedged items [line items]      
Financial liabilities oil derivative contracts $ 2.6    
Peruvian copper derivative contracts      
Disclosure of detailed information about hedged items [line items]      
Total derivative financial liabilities   $ 0.0 $ 14.0