INVESTMENT SECURITIES - Amounts reclassified to profit or loss from OCI before taxes (Details) - COP ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Disclosure of investment securities [abstract]
Redemptions or sales	$ (104,012)	$ (135,465)
ECL allowance	1,236	3,678
Total reclassified to profit or loss	$ (102,775)	$ (131,787)

Amount of expected credit loss allowance reclassified from other comprehensive income before tax to profit or loss.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration