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Financial - risk management objectives and policies - Changes in copper price (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure Of Financial risk management [Line Items] |  |  |
10% increase in future copper prices | $ 58,032 | $ 56,122 | $ 7,591
10% decrease in future copper prices | 58,032 | 56,122 | 7,083
Sociedad Minera Cerro Verde S.A.A. |  |  |
Disclosure Of Financial risk management [Line Items] |  |  |
10% increase in future copper prices | 123,181 | 140,420 | 112,080
10% decrease in future copper prices | $ 123,181 | $ (140,420) | $ (112,080)

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