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Cost of sales, without considering depreciation and amortization - Additional information (Details) - Sociedad Minera Cerro Verde S.A.A. [Member] - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of cost of sales [Line Items] |  |  |
Increase decrease in labor costs related to profit sharing | $ 28.9 | $ 32.2 | $ 60.2
Increase (decrease) in labor costs for recognition of contingent liabilities related to taxes | 8.3 |  |
Administrative expense directly related to cost of production | 35.6 | 32.0 | 30.7
Administrative Expense Related To Cost Of Production | $ 35.6 | $ 32.0 | $ 30.7
OSINERGMIN [Member] |  |  |
Disclosure of cost of sales [Line Items] |  |  |
Percentage of invoiced sales payable as royalty | 0.14% | 0.13% | 0.14%
OEFA [Member] |  |  |
Disclosure of cost of sales [Line Items] |  |  |
Percentage of invoiced sales payable as royalty | 0.10% | 0.11% |

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- Definition The amount of administrative expense directly related to cost of production. + References No definition available. + Details
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- Definition The percentage of contribution made on sale invoice value. + References No definition available. + Details
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- Details
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- Details
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