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TRADING ASSETS AND LIABILITIES - Total trading assets and liabilities, net (Details) - COP ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Trading assets and liabilities [abstract]
Total trading assets and liabilities net	$ 13,296,760	$ 10,083,801

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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