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Commitments and contingencies - Additional information (Details) |  |  | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Mar. 18, 2021 USD ($) | Mar. 18, 2021 PEN (S/) | Jan. 05, 2021 USD ($) installment | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2020 PEN (S/) | Dec. 31, 2015 USD ($) | Dec. 31, 2015 PEN (S/) | Dec. 31, 2022 PEN (S/) | Dec. 30, 2022 USD ($) | Dec. 30, 2022 PEN (S/) | Dec. 28, 2022 USD ($) | Dec. 28, 2022 PEN (S/) | Nov. 30, 2022 USD ($) | Nov. 30, 2022 PEN (S/) | Dec. 31, 2021 PEN (S/) | Jun. 11, 2021 USD ($) | Jun. 11, 2021 PEN (S/) | Mar. 15, 2021 USD ($) | Mar. 15, 2021 PEN (S/) | Jan. 05, 2021 PEN (S/) | Dec. 14, 2020 USD ($) | Dec. 14, 2020 PEN (S/) | Dec. 20, 2019 USD ($) | Dec. 20, 2019 PEN (S/) | Sep. 30, 2019 USD ($) | Sep. 30, 2019 PEN (S/) | Dec. 31, 2018 USD ($) | Dec. 31, 2018 PEN (S/) | Dec. 31, 2015 PEN (S/) | Dec. 31, 2014 USD ($) | Dec. 31, 2014 PEN (S/) | Dec. 31, 2012 USD ($) | Dec. 31, 2012 PEN (S/)
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent liability |  |  |  | $ 10,827,000 | $ 10,364,000 |  |  |  |  | S/ 41,358,000 |  |  |  |  |  |  | S/ 39,590,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Recoverability of litigation amount |  |  |  | $ 408,000,000.0 | 246,200,000 | $ 333,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Description of material leasing arrangements by lessor classified as operating lease |  |  |  | Legal procedures - |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax expense (income), continuing operations |  |  |  | $ 41,000 | (23,671,000) | 25,430,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finance costs |  |  |  | 54,136,000 | 60,629,000 | 37,822,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
SUNAT. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent liability |  |  |  | 2,749,000 |  |  |  |  |  | 10,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Declared tax deductions not recognized |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,350,000 | S/ 16,618,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax assessment value |  |  | $ 394,227,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | S/ 1,505,948,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Number of equal monthly payments | installment |  |  | 66 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount receivable |  |  |  | 414,841,000 |  |  |  |  |  | 1,579,716,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Open tax procedure | SUNAT. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collection of debt forced amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 31,581,000 | S/ 120,262,000 |  |  |  |  |  |  |  |  |
Declared tax deductions not recognized |  |  |  |  |  |  |  |  |  |  |  |  | $ 163,000 | S/ 624,000 |  |  |  |  |  | $ 36,449,000 | S/ 139,235,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Appeal Proceedings Provision for collection of Doubtful Debt and Unfounded Income Case [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Provision for collection of doubtful debts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 17,441,000 | S/ 66,623,000 |  |  |  |  |
Provision for tax Dispute related to the amortization of the contractual rights |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 17,441,000 | 66,623,000 |  |  |  |  |
Legal Proceedings [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent liability |  |  |  | 3,800,000 | 4,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Legal Proceedings, Tax [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent liability |  |  |  | 28,800,000 | 29,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lack of Recognition of Amortization as per Mining Law [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Tax Claims Receivable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 334,000 | S/ 1,270,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax year 2009 and 2010 | Open tax procedure | SUNAT. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Declared tax deductions not recognized |  |  |  |  |  |  |  | $ 19,901,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | S/ 76,023,000 |  |  |  |
Compensation of tax losses |  |  |  |  |  |  |  | 147,057,000 | S/ 561,758,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year 2014 [Member] | Open tax procedure | SUNAT. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Declared tax deductions not recognized |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 24,842,000 | S/ 94,898,000 |  |  |  |  |
Year 2007 [Member] | Open tax procedure | SUNAT. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Declared tax deductions not recognized |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 276,440,000 | S/ 1,056,310,000
Year 2008 [Member] | Open tax procedure | SUNAT. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Declared tax deductions not recognized |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 400,781,000 | S/ 1,530,985,000 |  |
Year 2009 [Member] | SUNAT. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collection of debt forced amount |  |  |  | 5,035,000 |  |  |  |  |  | 19,171,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income tax payable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 53,207,000 | S/ 202,614,000 |  |  |  |  |  |  |  |  |  |  |
Empresa de Generacin Huanza S.A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent liability |  |  |  | 1,081,000 | 1,081,000 |  |  |  |  | 7,993,000 |  |  |  |  |  |  | 7,532,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Empresa de Generacin Huanza S.A | SUNAT. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent liability |  |  |  |  |  |  |  |  |  |  | $ 1,600,000 | S/ 6,090,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Empresa de Generacin Huanza S.A | Year 2014 [Member] | SUNAT. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized Depreciation expense |  |  |  |  |  |  |  | $ 7,207,000 | S/ 27,532,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rio Seco |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collection of debt forced amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,238,000 | S/ 11,153,000 |  |  |  |  |  |  |
Rio Seco | SUNAT. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Declared tax deductions not recognized |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,167,000 | S/ 15,917,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rio Seco | Omission of Payment of General Sales Tax [Member] | SUNAT. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent liability |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 475,000 | S/ 1,815,000
Minera La Zanja S.R.L |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax contingencies |  |  |  |  | $ 294,000 |  |  |  |  |  |  |  |  |  |  |  | S/ 1,124,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minera La Zanja S.R.L | Tax year 2013 and 2015 | SUNAT. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disallowance of development cost | $ 900,000 | S/ 3,438,000 |  |  |  | $ 804,000 | S/ 3,060,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minera La Zanja S.R.L | Ifrs Tax Year 2017 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax contingencies |  |  |  | $ 418,000 |  |  |  |  |  | S/ 1,598,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sindicato Minero de Orcopampa S.A., note 31(b) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease concession expense, Percent |  |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

X
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