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REPORTING ENTITY - Sale of BAC Holding - Textual (Details) - COP ($) $ / shares in Units, $ in Millions |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 19, 2022 | Dec. 14, 2022 | Mar. 31, 2022 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |  |  |
Value issuance of shares |  |  |  | $ 1,655,855 | $ 120
BAC Holding International Corp |  |  |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |  |  |
Share price (in dollar per share) |  | $ 293 |  |  |
BAC Holding International Corp | Banco de Bogota S.A. |  |  |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |  |  |
Proportion of ownership interest in associate |  |  | 25.00% |  |
Percentage of investment in associates ceased and recognized as financial assets | 4.11% | 4.11% |  |  |
Banco de Bogota S.A. | BAC Holding International Corp |  |  |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |  |  |
Number shares sold |  | 9,030,424,454 |  |  |
Value issuance of shares |  | $ 2,645,914 |  |  |
BAC Holding International Corp | Banco de Bogota S.A. |  |  |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |  |  |
Percentage Of Spin Off |  |  | 75.00% |  |

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