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ESTIMATION OF FAIR VALUE - Reconciliation Level 3 of the fair value hierarchy - Additional information (Details) - COP ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Banco de Bogota S.A. |  |  |
Disclosure of fair value measurement of assets [line items] |  |  |
Additions | $ 1,199 |  |
Banco de Bogota S.A. |  |  |
Disclosure of fair value measurement of assets [line items] |  |  |
Additions | 147,790 | $ 466,210 |
Sales/redemptions |  | $ 39,348 |
Banco de Bogota S.A. | BAC Holding International Corp |  |  |
Disclosure of fair value measurement of assets [line items] |  |  |
Percentage of shares sold |  | 4.10% |
Banco de Occidente S.A. |  |  |
Disclosure of fair value measurement of assets [line items] |  |  |
Additions | 58,295 | $ 60,947 |
Sales/redemptions |  | 37,970 |
Banco Popular S.A. |  |  |
Disclosure of fair value measurement of assets [line items] |  |  |
Additions | 106,320 | 249,732 |
Sales/redemptions |  | 6,602 |
Banco AV Villas S A |  |  |
Disclosure of fair value measurement of assets [line items] |  |  |
Additions | 11,815 | 53,829 |
Sales/redemptions |  | 2,730 |
BAC Holding International Corp |  |  |
Disclosure of fair value measurement of assets [line items] |  |  |
Sales/redemptions |  | 519,964 |
Promigas S.A. E.S.P. |  |  |
Disclosure of fair value measurement of assets [line items] |  |  |
Additions | 1,876 |  |
Equity securities | Recurring fair value measurement [member] | Level 3 of fair value hierarchy [member] |  |  |
Disclosure of fair value measurement of assets [line items] |  |  |
Additions | 326,096 | 830,718 | $ 918,046
Sales/redemptions | $ 1,199 | $ 606,614 | $ 13,062

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