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CUSTOMER DEPOSITS - Deposits - Additional information (Details) - COP ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Disclosure of customer deposits [abstract]
Deposits received	$ 16,764,038	$ 19,732,877

X

- 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

X

- References

No definition available.

+ Details

Name:	aval_DisclosureOfCustomerDepositsAbstract
Namespace Prefix:	aval_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration