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Cost of sales, without considering depreciation and amortization - Cost of sales (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of cost of sales [Line Items] |  |  |
Depreciation and amortization | $ 189,620 | $ 226,335 | $ 238,879
Third parties services | 1,554 | 3,378 | 4,318
OEFA and OSINERGMIN contributions | 11,749 | 12,832 | 21,388
Cost of sales | 652,613 | 799,582 | 967,696
Sociedad Minera Cerro Verde S.A.A. [Member] |  |  |
Disclosure of cost of sales [Line Items] |  |  |
Materials and supplies | 581,658 | 693,292 | 693,316
Depreciation and amortization | 451,001 | 523,512 | 512,298
Labor (a) | 288,104 | 285,081 | 357,692
Energy | 200,794 | 228,853 | 254,243
Third parties services | 164,590 | 181,215 | 159,514
Incremental costs related to COVID-19 pandemic | 95,702 |  |
Change in finished goods inventory | 11,320 | 11,488 |
Change in work in process inventory | 10,391 | (2,290) | (5,723)
Depreciation for right-of-use assets (see Note 7 and 10(a)) | 7,399 | 7,069 |
Variable lease payments, low-value and short-term leases (see Note 10(a)) | 5,889 | 6,828 | 7,904
OEFA and OSINERGMIN contributions | 2,000 | 2,923 | 2,743
Management Fees | (49,575) | (23,427) | (8,513)
Other costs | 39,982 | 47,033 | 45,402
Cost of sales | $ 1,809,255 | $ 1,961,577 | $ 2,018,876

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