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Provisions, contingent liabilities and other liabilities - Provision for remediation and mine closure (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Provisions and contingent liabilities    
Beginning balance $ 249,596  
Final balance   $ 249,596
Minera Yanacocha SRL and subsidiary [Member]    
Provisions and contingent liabilities    
Beginning balance 1,660,603  
Final balance 2,393,956 1,660,603
Sociedad Minera Cerro Verde S.A.A.    
Provisions and contingent liabilities    
Beginning balance 307,974  
Final balance 231,451 307,974
Sociedad Minera Cerro Verde S.A.A. | Provision for remediation and mine closures [Member]    
Provisions and contingent liabilities    
Beginning balance 237,543 195,900
Accretion expense 3,715 4,196
Changes in estimates, (see Note 7) (18,271) 37,569
Progressive mine closure payments in hydrometallurgy process (87) (122)
Exchange rate effect 10  
Final balance $ 222,910 $ 237,543