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UNCONSOLIDATED STRUCTURED ENTITIES (Details) - COP ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Disclosure of unconsolidated structured entities [line items] |  |
Percentage of total assets | 2.08% | 2.05%
Unconsolidated structured entities [member] |  |
Disclosure of unconsolidated structured entities [line items] |  |
Total assets in relation to the Grupo Aval's interests in the unconsolidated structured entities | $ 6,279,287 | $ 6,059,447
Grupo Aval's maximum exposure | 6,279,287 | 6,059,447
Unconsolidated structured entities [member] | Financial assets at fair value through profit or loss, category [member] | Investment securities at fair value [member] |  |
Disclosure of unconsolidated structured entities [line items] |  |
Total assets in relation to the Grupo Aval's interests in the unconsolidated structured entities | 6,247,125 | 6,029,585
Unconsolidated structured entities [member] | Financial assets at amortised cost, category [member] | Other accounts receivable at amortized cost [member] |  |
Disclosure of unconsolidated structured entities [line items] |  |
Total assets in relation to the Grupo Aval's interests in the unconsolidated structured entities | 32,162 | 29,862
Managed funds [member] |  |
Disclosure of unconsolidated structured entities [line items] |  |
Total assets in relation to the Grupo Aval's interests in the unconsolidated structured entities | 3,711,655 | 4,457,150
Grupo Aval's maximum exposure | 3,711,655 | 4,457,150
Managed funds [member] | Financial assets at fair value through profit or loss, category [member] | Investment securities at fair value [member] |  |
Disclosure of unconsolidated structured entities [line items] |  |
Total assets in relation to the Grupo Aval's interests in the unconsolidated structured entities | 3,680,026 | 4,427,288
Managed funds [member] | Financial assets at amortised cost, category [member] | Other accounts receivable at amortized cost [member] |  |
Disclosure of unconsolidated structured entities [line items] |  |
Total assets in relation to the Grupo Aval's interests in the unconsolidated structured entities | 31,629 | 29,862
Funds managed by other entities [member] |  |
Disclosure of unconsolidated structured entities [line items] |  |
Total assets in relation to the Grupo Aval's interests in the unconsolidated structured entities | 2,567,632 | 1,602,297
Grupo Aval's maximum exposure | 2,567,632 | 1,602,297
Funds managed by other entities [member] | Financial assets at fair value through profit or loss, category [member] | Investment securities at fair value [member] |  |
Disclosure of unconsolidated structured entities [line items] |  |
Total assets in relation to the Grupo Aval's interests in the unconsolidated structured entities | 2,567,099 | $ 1,602,297
Funds managed by other entities [member] | Financial assets at amortised cost, category [member] | Other accounts receivable at amortized cost [member] |  |
Disclosure of unconsolidated structured entities [line items] |  |
Total assets in relation to the Grupo Aval's interests in the unconsolidated structured entities | $ 533 |

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