EMPLOYEE BENEFIT PLANS - Defined contribution plans (Details) - COP ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Defined contribution plan
EMPLOYEE BENEFIT PLANS
Defined contribution expense	$ 295,478	$ 250,192
Pension
EMPLOYEE BENEFIT PLANS
Defined contribution expense	231,676	186,117
Current severance regimen
EMPLOYEE BENEFIT PLANS
Defined contribution expense	$ 63,802	$ 64,075

The amount of post-employment benefit expense relating to defined contribution plans. Defined contribution plans are post-employment benefit plans under which an entity pays fixed contributions into a separate entity (a fund) and will have no legal or constructive obligation to pay further contributions if the fund does not hold sufficient assets to pay all employee benefits relating to employee service in the current and prior periods.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2022-03-24
-Paragraph 53
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_53&doctype=Standard
-URIDate 2022-03-24

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