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FAIR VALUES - Fair value of financial instruments (Details) - Fair value [member] - ARS ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | $ 253,262,408 | $ 217,002,007
Financial liabilities | 19,952,509 | 48,823,057
Debt Securities At Fair Value Through Profit Or Loss |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 22,384,677 | 38,486,623
Derivatives |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 295,555 | 432,164
Other financial assets |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 5,962,142 | 24,112,684
Other Debt Securities |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 209,735,714 | 137,706,426
Financial assets in guarantee |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 14,381,760 | 15,749,311
Investments in Equity Instruments |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 502,560 | 514,799
Liabilities at fair value through profit or loss |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial liabilities | 2,139,170 | 3,999,525
Other financial liabilities |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial liabilities | 17,813,339 | 44,823,532
Level 1 of fair value hierarchy [member] |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 50,664,713 | 104,592,031
Financial liabilities | 19,952,509 | 48,823,057
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 | 22,381,002 | 37,879,808
Level 1 of fair value hierarchy [member] | Derivatives |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 295,555 | 432,164
Level 1 of fair value hierarchy [member] | Other financial assets |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 5,962,142 | 24,112,684
Level 1 of fair value hierarchy [member] | Other Debt Securities |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 7,375,294 | 26,112,213
Level 1 of fair value hierarchy [member] | Financial assets in guarantee |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 14,381,760 | 15,749,311
Level 1 of fair value hierarchy [member] | Investments in Equity Instruments |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 268,960 | 305,851
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 | 2,139,170 | 3,999,525
Level 1 of fair value hierarchy [member] | Other financial liabilities |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial liabilities | 17,813,339 | 44,823,532
Level 2 of fair value hierarchy [member] |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 202,364,095 | 112,201,028
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 | 3,675 | 606,815
Level 2 of fair value hierarchy [member] | Other Debt Securities |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 202,360,420 | 111,594,213
Level 3 of fair value hierarchy [member] |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | 233,600 | 208,948
Level 3 of fair value hierarchy [member] | Investments in Equity Instruments |  |
Disclosure of fair value measurement of assets and liability [line items] |  |
Financial assets | $ 233,600 | $ 208,948

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