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TRADING ASSETS AND LIABILITIES - Total trading assets and liabilities, net (Details) - COP ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Trading assets and liabilities [abstract] |  |
Total trading assets and liabilities net | $ 19,151,280 | $ 13,296,760

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- Definition Trading assets and liabilities [abstract] + References No definition available. + Details
Name: | aval_TradingAssetsAndLiabilitiesAbstract
Namespace Prefix: | aval_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of trading asset (liabilities) net as on the balance sheet date. + References No definition available. + Details
Name: | aval_TradingAssetsAndLiabilitiesNet
Namespace Prefix: | aval_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant