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RISK MANAGEMENT - Loans recorded at amortized cost (Details) - COP ($) $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of financial assets [line items] |  |  |  |
Financial assets | $ 304,853,883 | $ 280,746,878 |  |
Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | 251,981,889 | 236,970,165 |  |
Loan portfolio [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | 190,129,486 | 176,168,055 |  |
Loans to corporate entities [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | 110,756,010 | 102,145,802 |  |
Interbank and overnight funds [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | 704,260 | 392,585 |  |
Commercial lending portfolio [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | 110,051,750 | 101,753,217 |  |
Loans to consumers [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | 57,810,307 | 55,692,165 |  |
Mortgages [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | 21,562,412 | 18,106,219 |  |
Microcredit [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Sale of portfolio | 236,805 |  |  |
Microcredit [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | 757 | 223,869 |  |
Gross carrying amount [member] | Loan portfolio [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | 200,136,125 | 186,203,770 | $ 188,313,361 | $ 231,573,437
Gross carrying amount [member] | Loans to corporate entities [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | 116,119,698 | 107,440,424 |  |
Gross carrying amount [member] | Interbank and overnight funds [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | 705,055 | 392,607 | 5,967,743 | 3,218,433
Gross carrying amount [member] | Commercial lending portfolio [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | 115,414,643 | 107,047,817 | 104,775,099 | 122,027,804
Gross carrying amount [member] | Loans to consumers [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | 61,976,325 | 59,999,611 | 59,419,444 | 76,889,145
Gross carrying amount [member] | Mortgages [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | 22,035,727 | 18,486,206 | 17,883,355 | 29,120,316
Gross carrying amount [member] | Microcredit [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | 4,375 | 277,529 | 267,720 | 317,739
Accumulated depreciation, amortisation and impairment [member] | Loan portfolio [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | (10,006,639) | (10,035,715) |  |
Accumulated impairment [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | (10,478,009) | (10,521,501) |  |
Accumulated impairment [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | (10,387,285) | (10,438,261) |  |
Accumulated impairment [member] | Loan portfolio [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | (10,006,639) | (10,035,715) | (9,197,514) | (11,275,612)
Accumulated impairment [member] | Loans to corporate entities [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | (5,363,688) | (5,294,622) |  |
Accumulated impairment [member] | Interbank and overnight funds [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | (795) | (22) | (1,444) | (2,386)
Accumulated impairment [member] | Commercial lending portfolio [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | (5,362,893) | (5,294,600) | (5,492,746) | (5,854,745)
Accumulated impairment [member] | Loans to consumers [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | (4,166,018) | (4,307,446) | (3,311,912) | (4,581,004)
Accumulated impairment [member] | Mortgages [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | (473,315) | (379,987) | (352,441) | (732,407)
Accumulated impairment [member] | Microcredit [member] | Financial assets at amortised cost, category [member] |  |  |  |
Disclosure of financial assets [line items] |  |  |  |
Financial assets | $ (3,618) | $ (53,660) | $ (38,971) | $ (105,070)

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