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v3.21.1

Shareholders' equity, net - Partners' equity (Details) - Minera Yanacocha SRL and subsidiary [Member] - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 21, 2017 | Dec. 31, 2020 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2019 | Dec. 31, 2018 | Jun. 14, 2018 | Feb. 19, 2018
Disclosure Of Partners Equity Net LineItems [Line Items] |  |  |  |  |  |  |  |
Number of shares issued and fully paid |  |  |  |  | 656,484,745 | 656,484,745 |  |
Subsidiary Sale Of Stock Shares Approved For Reduction |  |  |  |  |  |  |  | 63,922,565
Subsidiary Sale Of Stock Shares Approved For Sale |  |  |  |  |  |  | 63,922,565 |
Applicable Dividend Distribution Tax Rate |  |  | 5.00% | 6.80% |  |  |  |
Treasury shares [member] |  |  |  |  |  |  |  |
Disclosure Of Partners Equity Net LineItems [Line Items] |  |  |  |  |  |  |  |
Number of shares purchased | 63,922,565 |  |  |  |  |  |  |
Payments to acquire or redeem entity's shares | $ 47,911 |  |  |  |  |  |  |
Percentage of stock purchased | 5.00% |  |  |  |  |  |  |
Common shares [member] |  |  |  |  |  |  |  |
Disclosure Of Partners Equity Net LineItems [Line Items] |  |  |  |  |  |  |  |
Number of shares issued and fully paid |  | 1,214,528,739 |  |  | 1,214,528,739 |  |  |
Value of shares issued and fully paid |  | $ 398,216 |  |  |  |  |  |
Subsidiary sale of stock value approved for reduction |  |  |  |  |  |  |  | $ 19,711

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