GOODWILL - Roll forward - Additional information (Details) - COP ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Disclosure of reconciliation of changes in goodwill [line items]
Effect of movements in exchange rates	$ (35,995)	$ (323,676)
BAC Holding International Corp
Disclosure of reconciliation of changes in goodwill [line items]
Effect of movements in exchange rates		(353,876)
Multi Financial Group Inc [member]
Disclosure of reconciliation of changes in goodwill [line items]
Effect of movements in exchange rates	$ (35,995)	$ 30,200

The increase (decrease) in goodwill resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Goodwill]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2023-01-01
-Paragraph B67
-Subparagraph d
-Clause vi
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2023-en-r&anchor=para_B67_d_vi&doctype=Appendix&subtype=B
-URIDate 2023-03-23

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration