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Other accruals and liabilities - Caption (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Other Accruals And Liabilities [Line Items]    
Lease liabilities $ 5,779 $ 7,839
Minera Yanacocha SRL and subsidiary [Member]    
Disclosure Of Other Accruals And Liabilities [Line Items]    
Accrual of capital expenditure 36,195 20,147
Workers' profit sharing payable (c) 13,851 17,311
Accrual of operating costs (c) 7,135 15,938
Lease liabilities 115 330
Interests payable, see note 24   16,840
Total 57,296 70,566
Classification by maturity:    
Current portion 57,296 70,526
Non-current portion 0 40
Total $ 57,296 $ 70,566