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ANALYSIS OF OPERATING SEGMENTS - General information (Details) - item	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Disclosure of operating segments [abstract]
Number of reportable segment	4	8

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- Definition

Number of Reportable Segment.

+ References

No definition available.

+ Details

Name:	aval_IfrsNumberOfReportableSegment
Namespace Prefix:	aval_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfOperatingSegmentsAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration