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Derivative Financial Assets
 12 Months Ended
Dec. 31, 2021
Disclosure Of Detailed Information about Derivative Financial Assets Explanatory [Abstract]  
Derivative financial assets DERIVATIVE FINANCIAL ASSETS
United States Dollar
Figures in millions unless otherwise stated20212020
Australian gold derivative contracts2.0 27.3 
Salares Norte foreign currency derivative contracts— 86.0 
Ghanaian oil derivative contracts3.1 — 
Total derivative financial assets5.1 113.3 
Non-current derivative financial assets1
— (31.4)
Derivative financial assets5.1 81.9 
1Relates to the Salares Norte foreign exchange derivative contract which is for the period January 2022 to December 2022.
DERIVATIVE FINANCIAL LIABILITIES
United States Dollar
Figures in millions unless otherwise stated20212020
Salares Norte foreign currency derivative contracts6.8 — 
Ghanaian oil derivative contracts— 10.0 
Australian oil derivative contracts— 5.1 
Peruvian copper derivative contracts— 14.0 
Total derivative financial liabilities6.8 29.1 
Non-current derivative financial liabilities1
— (7.3)
Derivative financial liabilities6.8 21.8 
1Relates to the Australian (US$2.6 million) and Ghanaian (US$4.7 million) oil derivative contracts which are for the period January 2022 to December 2022.