INVESTMENTS IN ASSOCIATES AND JOINT VENTURES - Ownership Interest and Book Value (Details) - COP ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Disclosure of joint ventures [line items]
Book value	$ 2,394	$ 79
Renting Automayor S.A.S. [member]
Disclosure of joint ventures [line items]
Ownership interest	50.00%	50.00%
Book value	$ 2,394
Cfc Sk Capital S.A.S [member]
Disclosure of joint ventures [line items]
Ownership interest	50.00%	50.00%
Book value		$ 79

The proportion of ownership interest in a joint venture attributable to the entity. [Refer: Joint ventures [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Number 27
-IssueDate 2021-01-01
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-Subparagraph b
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-URIDate 2021-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2021-01-01
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
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