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INCOME TAX - Withholdings tax on dividends paid between entities (Details) - COP ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Disclosure of income tax [abstract] |  |
Withholdings tax on dividends paid to entities | $ 164 | $ 5,363

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- References No definition available. + Details
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Namespace Prefix: | aval_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount for withholdings tax on dividends paid between entities + References No definition available. + Details
Name: | aval_WithholdingsTaxOnDividendsPaidToEntities
Namespace Prefix: | aval_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration