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Commitments and contingencies - Open tax procedures (Details) |  |  |  | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 11, 2023 USD ($) | Aug. 11, 2023 PEN (S/) | Jul. 30, 2021 USD ($) | Jul. 30, 2021 PEN (S/) | Nov. 13, 2020 USD ($) | Nov. 13, 2020 PEN (S/) | Jul. 31, 2023 USD ($) | Jul. 31, 2023 PEN (S/) | Dec. 31, 2023 USD ($) | Dec. 31, 2023 PEN (S/) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Jul. 31, 2023 PEN (S/) | Nov. 30, 2022 USD ($) | Nov. 30, 2022 PEN (S/) | Dec. 31, 2020 USD ($) | Dec. 31, 2020 PEN (S/)
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Compulsory collection of income tax |  |  |  |  |  |  |  |  | $ 820,292,000 |  |  |  |  |  |  |  |
Tax Assessments, penalties and interest expenses |  |  |  |  |  |  |  |  | 492,337,000 |  |  |  |  |  |  |  |
Tax Assessments Estimated Possible Losses |  |  |  |  |  |  |  |  | 327,955,000 |  |  |  |  |  |  |  |
Income tax expense |  |  |  |  |  |  |  |  | (45,126,000) |  | $ 0 | $ 0 |  |  |  |  |
Tax year 2009 and 2010 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax Assessments Estimated Possible Losses |  |  |  |  |  |  |  |  | 113,178,000 |  |  |  |  |  |  |  |
Tax Assessments Estimated Possible Losses, Financial Expenses |  |  |  |  |  |  |  |  | 58,454,000 |  |  |  |  |  |  |  |
Tax Assessments Estimated Possible Losses, Others |  |  |  |  |  |  |  |  | $ 9,598,000 |  |  |  |  |  |  |  |
Year 2018 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deductible temporary differences for which no deferred tax asset is recognised |  |  |  |  |  |  | $ 19,822,000 |  |  |  |  |  | S/ 73,600,000 |  |  |  |
Revenue From Rendering Of Services Related Party Transactions Not recognised |  |  |  |  |  |  | 46,027,000 |  |  |  |  |  | S/ 170,900,000 |  |  |  |
SUNAT. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deductible temporary differences for which no deferred tax asset is recognised |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,476,000 | S/ 16,618,000 |  |
SUNAT. | Year 2007 and 2008 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Compulsory collection of income tax |  |  |  |  | $ 422,111,000 | S/ 1,567,297,000 |  |  |  |  |  |  |  |  |  |  |
Tax Assessments, penalties and interest expenses |  |  |  |  | 370,387,000 | 1,375,248,000 |  |  |  |  |  |  |  |  |  |  |
Collection of debt forced amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 19,451,000 | S/ 72,065,000
Amount of Tax Assessment Value Paid |  |  | $ 426,374,000 | S/ 1,583,128,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Tax Assessments Estimated Possible Losses |  |  |  |  | $ 51,723,000 | S/ 192,049,000 |  |  |  |  |  |  |  |  |  |  |
SUNAT. | Tax year 2009 and 2010 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax Assessments Estimated Possible Losses | S/ |  |  |  |  |  |  |  |  |  | S/ 420,231,000 |  |  |  |  |  |  |
SUNAT. | Year 2018 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Commitments and contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax Assessments, penalties and interest expenses |  |  |  |  |  |  | $ 5,521,000 | S/ 20,500,000 |  |  |  |  |  |  |  |  |
Amount of Tax Assessment Value Paid | $ 3,306,000 | S/ 12,249,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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