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Fair value of financial instruments - Reconciliation of Level 3 Assets and Liabilities (Details) - ARS ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Disclosure of fair value measurement of assets [line items] |  |
Balance at the beginning of the fiscal year | $ 13,305,540,254 |
Balance at year-end | 14,719,893,843 | $ 13,305,540,254
Level 3 Fair value |  |
Disclosure of fair value measurement of assets [line items] |  |
Balance at the beginning of the fiscal year | 14,682,139 | 4,409,846
Balance at year-end | 6,519,679 | 14,682,139
Private securities - Corporate bonds | Level 3 Fair value |  |
Disclosure of fair value measurement of assets [line items] |  |
Increase (decrease) in fair value measurement, assets | (1,903,183) | 8,798,656
Debt securities at fair value through profit or loss - Private securities - Corporate bonds | Level 3 Fair value |  |
Disclosure of fair value measurement of assets [line items] |  |
Increase (decrease) in fair value measurement, assets | (498,709) | 1,086,002
Equity instruments | Level 3 Fair value |  |
Disclosure of fair value measurement of assets [line items] |  |
Increase (decrease) in fair value measurement, assets | 2,179,307 | 3,381,372
Net monetary inflation adjustment | Level 3 Fair value |  |
Disclosure of fair value measurement of assets [line items] |  |
Increase (decrease) in fair value measurement, assets | $ (7,939,875) | $ (2,993,737)

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