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FAIR VALUES - Fair value of financial instruments (Details) - Fair value - ARS ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | $ 669,329,882 | $ 318,556,458
Financial liabilities | 160,472,511 | 158,967,196
Derivatives |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial liabilities | 1,734,047 |
Liabilities at fair value through profit or loss |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial liabilities |  | 1,323,792
Other financial liabilities |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial liabilities | 158,738,464 | 157,643,404
Debt securities at fair value through profit or loss |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 263,332,202 | 101,076,778
Derivatives |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 4,627,810 | 8,264,332
Other financial assets |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 17,159,775 | 45,870,366
Other Debt Securities |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 208,149,259 | 61,561,845
Financial assets Pledged as collateral |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 175,350,106 | 100,986,155
Investments in Equity Instruments |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 710,730 | 796,982
Level 1 of fair value hierarchy [member] |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 559,574,926 | 283,449,780
Financial liabilities | 158,738,464 | 158,967,196
Level 1 of fair value hierarchy [member] | Liabilities at fair value through profit or loss |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial liabilities |  | 1,323,792
Level 1 of fair value hierarchy [member] | Other financial liabilities |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial liabilities | 158,738,464 | 157,643,404
Level 1 of fair value hierarchy [member] | Debt securities at fair value through profit or loss |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 256,350,036 | 97,656,756
Level 1 of fair value hierarchy [member] | Other financial assets |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 17,159,775 | 45,870,366
Level 1 of fair value hierarchy [member] | Other Debt Securities |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 110,662,651 | 38,829,594
Level 1 of fair value hierarchy [member] | Financial assets Pledged as collateral |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 175,350,106 | 100,986,155
Level 1 of fair value hierarchy [member] | Investments in Equity Instruments |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 52,358 | 106,909
Level 2 of fair value hierarchy [member] |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 109,096,584 | 34,416,605
Financial liabilities | 1,734,047 |
Level 2 of fair value hierarchy [member] | Derivatives |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial liabilities | 1,734,047 |
Level 2 of fair value hierarchy [member] | Debt securities at fair value through profit or loss |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 6,982,166 | 3,420,022
Level 2 of fair value hierarchy [member] | Derivatives |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 4,627,810 | 8,264,332
Level 2 of fair value hierarchy [member] | Other Debt Securities |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 97,486,608 | 22,732,251
Level 3 of fair value hierarchy [member] |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 658,372 | 690,073
Level 3 of fair value hierarchy [member] | Investments in Equity Instruments |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | $ 658,372 | $ 690,073

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