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Related parties - Transactions And Balances With Parent Company Except Key Management Personnel (Details) - ARS ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Interest income | $ 4,696,241,574 | $ 6,933,449,775 | $ 4,267,782,358
Fee and commission income | 548,839,620 | 553,863,559 | 537,969,789
Fee and commission expense | (266,256,295) | (251,270,573) | (220,994,595)
Gains (Losses) on financial assets and liabilities at fair value through profit or loss, net | 152,692,993 | (45,061,608) | 101,054,719
Other operating income | 142,790,472 | 146,440,914 | 143,506,300
Other administrative expenses | (563,572,281) | (542,524,653) | (461,308,203)
Parent |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Interest income | 0 | 1,921 | 0
Fee and commission income | 223,058 | 21,550 | 3,079
Fee and commission expense | 0 | (718,064) | 0
Gains (Losses) on financial assets and liabilities at fair value through profit or loss, net | (2,638) | (415,252) | (150,496)
Other operating income | 57,796 | 69,314 | 63,174
Other administrative expenses | (28,328,441) | (111,204,350) | $ (89,428,699)
Cash and deposits in banks |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances with parent and off-balance sheet transactions | 5,549,671 | 23,785,069 |
Other financial assets |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances with parent and off-balance sheet transactions | 88 | 247,378 |
Other liabilities |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances with parent and off-balance sheet transactions | 46,828,702 | 98,645,567 |
Derivatives (Liabilities) |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances with parent and off-balance sheet transactions | 2,651 | 0 |
Securities in custody |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances with parent and off-balance sheet transactions | 3,075,895,648 | 1,875,949,266 |
Guarantees received |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances with parent and off-balance sheet transactions | 120,776,780 | 43,340,133 |
Guarantees granted |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances with parent and off-balance sheet transactions | 86,978,395 | 34,278,568 |
Derivatives |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances with parent and off-balance sheet transactions | $ 518,388 | $ 0 |

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