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RISK MANAGEMENT - Loan portfolio given as collateral (Details) $ in Millions	Dec. 31, 2023 COP ($)
Disclosure of risk management [abstract]
Loan portfolio delivered as collateral	$ 0

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- Definition

Disclosure of risk management [abstract]

+ 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

Loan portfolio delivered as collateral

+ References

No definition available.

+ Details

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Namespace Prefix:	aval_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant