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GOODWILL - Carrying amount (Details) - COP ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Disclosure of information for cash-generating units [line items] |  |  |
Goodwill carrying amount | $ 2,202,222 | $ 2,248,217 | $ 8,486,560
Sociedad Administradora de Fondos de Pensiones y Cesantias Porvenir S.A. |  |  |
Disclosure of information for cash-generating units [line items] |  |  |
Goodwill carrying amount | 538,231 | 538,231 |
Banco de Bogota S.A. over Megabanco |  |  |
Disclosure of information for cash-generating units [line items] |  |  |
Goodwill carrying amount | 465,905 | 465,905 |
Banco Popular S.A. |  |  |
Disclosure of information for cash-generating units [line items] |  |  |
Goodwill carrying amount | 358,401 | 358,401 |
Banco de Bogota S.A. |  |  |
Disclosure of information for cash-generating units [line items] |  |  |
Goodwill carrying amount | 301,222 | 301,222 |
Banco de Bogota S.A. over Multi Financial Group Inc. |  |  |
Disclosure of information for cash-generating units [line items] |  |  |
Goodwill carrying amount | 139,226 | 175,221 |
Promigas S.A. E.S.P. and Its Subsidiaries |  |  |
Disclosure of information for cash-generating units [line items] |  |  |
Goodwill carrying amount | 169,687 | 169,687 |
Banco de Occidente S.A. |  |  |
Disclosure of information for cash-generating units [line items] |  |  |
Goodwill carrying amount | 127,571 | 127,571 |
Concesionaria Panamericana S.A.S. |  |  |
Disclosure of information for cash-generating units [line items] |  |  |
Goodwill carrying amount | 72,594 | 82,594 |
Banco de Occidente S.A. over Banco Union |  |  |
Disclosure of information for cash-generating units [line items] |  |  |
Goodwill carrying amount | 22,724 | 22,724 |
Hoteles Estelar S. A. |  |  |
Disclosure of information for cash-generating units [line items] |  |  |
Goodwill carrying amount | $ 6,661 | $ 6,661 |

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- Definition The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2023-01-01 -Paragraph 134 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2023-en-r&anchor=para_134_a&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2023-01-01 -Paragraph 135 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2023-en-r&anchor=para_135_a&doctype=Standard -URIDate 2023-03-23 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2023-01-01 -Paragraph B67 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2023-en-r&anchor=para_B67_d&doctype=Appendix&subtype=B -URIDate 2023-03-23 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 54 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_54_c&doctype=Standard -URIDate 2023-03-23 + Details
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