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Provisions and contingent liabilities - Movement of provision - Caption - Minera (Details) - Minera Yanacocha SRL and subsidiary [Member] - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Provisions [abstract]        
Provision for closure of mining units and exploration projects $ 2,515,914 $ 1,738,428 $ 1,608,380 $ 1,294,464
Provision for social responsibility 14,659 16,609 $ 18,326 $ 18,010
Other provisions 5,111 7,352    
Provisions 2,535,684 1,762,389    
Other Accruals And Liabilities [Abstract]        
Workers' profit sharing payable 13,851 17,311    
Accrual of operating costs 7,135 15,938    
Provisions for Accruals Of Capital Expenditures 36,195 20,147    
Provisions, Other Accruals And Liabilities 2,535,684 1,762,389    
Classification by maturity [Abstract]        
Current portion 141,728 101,786    
Non-current portion 2,393,956 1,660,603    
Provisions, other accruals and liabilities $ 2,535,684 $ 1,762,389