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Financial - risk management objectives and policies - Effect in profit or loss (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of financial risk management objectives and policies [Line Items]      
Increase in exchange rate basis points 10.00% 10.00% 10.00%
Decrease in exchange rate basis points (10.00%) (10.00%) (10.00%)
Exchange rate increased effect on income $ 56,122 $ 7,591 $ 4,053
Exchange rate decreased effect on income (56,122) (7,083) (3,545)
Sociedad Minera Cerro Verde S.A.A. [Member]      
Disclosure of financial risk management objectives and policies [Line Items]      
Exchange rate increased effect on income 140,420 112,080 99,219
Exchange rate decreased effect on income $ 140,420 $ 112,080 $ 99,219
Sociedad Minera Cerro Verde S.A.A. [Member] | Currency exchange rates      
Disclosure of financial risk management objectives and policies [Line Items]      
Increase in exchange rate basis points 5.00% 5.00%  
Decrease in exchange rate basis points (5.00%) (5.00%)  
Exchange rate increased effect on income $ (7,782) $ 20,656  
Exchange rate decreased effect on income $ 7,782 $ (20,656)