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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, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
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Provisions [abstract] |  |  |  |
Provision for closure of mining units and exploration projects | $ 1,738,428 | $ 1,608,380 | $ 1,294,464 | $ 1,234,731
Provision for social responsibility | 16,609 | 18,326 | $ 18,010 | $ 21,689
Other provisions | 7,352 | 6,162 |  |
Provisions | 1,762,389 | 1,632,868 |  |
Other Accruals And Liabilities [Abstract] |  |  |  |
Workers' profit sharing payable | 17,311 | 12,793 |  |
Accrual of operating costs | 15,938 | 11,238 |  |
Provisions for Accruals Of Capital Expenditures | 20,147 | 8,139 |  |
Provisions, Other Accruals And Liabilities | 1,762,389 | 1,632,868 |  |
Classification by maturity [Abstract] |  |  |  |
Current portion | 101,786 | 45,317 |  |
Non-current portion | 1,660,603 | 1,587,551 |  |
Provisions, other accruals and liabilities | $ 1,762,389 | $ 1,632,868 |  |

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- Definition Total amount of current provisions, other accruals and liabilities + References No definition available. + Details
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