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RISK MANAGEMENT - Structural foreign exchange risk - General information (Details) | 12 Months Ended
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Dec. 31, 2023
Disclosure of risk management [abstract] |
Percentage of Average Difference in Foreign Currency Denominated Rights and Foreign Currency Denominated Obligations on Unconsolidated Basis | 20.00%
Percentage of Average Difference in Foreign Currency Denominated Rights and Foreign Currency Denominated Obligations on Consolidated Basis | 40.00%

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- Definition Disclosure of risk management [abstract] + References No definition available. + Details
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- Definition The percentage of average difference in foreign currency denominated rights and foreign currency denominated obligations including both on and off balance sheet positions on consolidated basis. + References No definition available. + Details
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- Definition The percentage of average difference in foreign currency denominated rights and foreign currency denominated obligations including both on and off balance sheet positions on unconsolidated basis. + References No definition available. + Details
Name: | aval_PercentageOfAverageDifferenceInForeignCurrencyDenominatedRightsAndForeignCurrencyDenominatedObligationsOnUnconsolidatedBasis
Namespace Prefix: | aval_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration