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CUSTOMER DEPOSITS - Deposits - Additional information (Details) - COP ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Disclosure of customer deposits [abstract] |  |
Deposits received | $ 19,732,877 | $ 14,702,118

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- Definition The amount of deposit liabilities from customers held by the entity due over twelve months. + References No definition available. + Details
Name: | aval_DepositsFromCustomersNoncurrent
Namespace Prefix: | aval_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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