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EMPLOYEE BENEFITS - Textual (Details) | Dec. 31, 2023
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Disclosure of defined benefit plans [abstract] |
Percentage of reasonably possible increase and decrease in actuarial assumption | 0.50%

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- Definition Represents the percentage of reasonably possible increase decrease in actuarial assumptions. + References No definition available. + Details
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Namespace Prefix: | aval_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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