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Income tax - Additional information (Details) $ in Thousands, $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
May 31, 2025 | Dec. 31, 2025 USD ($) | Dec. 31, 2025 ARS ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2024 ARS ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2023 ARS ($)
Income tax |  |  |  |  |  |  |
Inflation adjustment due to price index variation |  | $ 43,810 |  | $ 167,973 |  | $ 114,289 |
Period of accumulated price index variation |  | 36 months | 36 months | 36 months | 36 months | 36 months | 36 months
Percentage price index variation has exceeded |  | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | 100.00%
Current tax liabilities due to tax inflation adjustments |  | $ 43,810 |  | $ 167,973 |  | $ 114,289 |
Taxable base of the historical tax carryforward losses |  | 50,000 | $ 72,777 | 73,000 | $ 75,345 | 47,700 | $ 38,585
Taxable base of the historical tax carryforward losses, with inflation adjustment |  | 115,400 | $ 167,854 | 134,500 | $ 138,781 | 316,200 | $ 255,660
Deferred income tax recognized from Brazilian concession |  | $ 0 |  |  |  |  |
Unrecognized deferred tax assets on tax loss carry forwards |  |  |  | $ 35,800 |  |  |
TAGSA benefits from tax-free zone concession obtained term | 20 years |  |  |  |  |  |
Inframerica Concessionaria do Aeroporto de Sao Goncalo do Amarante S.A. ("ICASGA") |  |  |  |  |  |  |
Income tax |  |  |  |  |  |  |
Tax effect on reversal of the impairment of intangible assets |  |  |  |  |  | $ 35,300 |

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