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Cost of sales, without considering depreciation and amortization - Incremental costs related to COVID-19 pandemic and care and maintenance (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
USD ($)
Minera Yanacocha Srl And Subsidiaries [Member]  
Disclosure of cost of sales [Line Items]  
Incremental costs related to COVID-19 pandemic and care and maintenance, capitalized to inventory $ 0
Incremental costs (i) 27,157
Personnel expenses (i) 11,446
Labor expenses (ii) 5,069
Incremental labor costs 14,300
Incremental costs of services 9,500
Incremental other costs 3,300
Incremental costs related to COVID-19 43,672
Sociedad Minera Cerro Verde S.A.A. [Member]  
Disclosure of cost of sales [Line Items]  
Incremental costs (i) 51,071
Labor and other employee expenses (ii) 29,705
Severance costs (iii) 7,485
Capital project write-off 6,255
Exceptional contributions and donations 1,186
Incremental costs related to COVID-19 95,702
Incremental depreciation 21,900
Severance costs associated with employee retirement programs $ 7,100