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FINANCIAL OBLIGATIONS - Issued bonds by issued date and maturity date - Additional information (Details) - COP ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Disclosure of deposits from financial obligations [abstract] |  |
The amount of issued bonds due over 12 months | $ 24,634,287 | $ 21,664,811

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- 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 The non-current portion of non-current bonds issued. [Refer: Bonds issued] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_NoncurrentPortionOfNoncurrentBondsIssued
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant