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RISK MANAGEMENT - Investment price risk in equity instruments (Details) - Equity investments - Investment securities at fair value [member] - Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member] - COP ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Disclosure of financial assets [line items] |  |
Investment subject to Regulatory VaR | $ 43,765 | $ 44,122
Regulatory VaR | $ 6,433 | $ 6,486
Percentage of Portfolio subject to VaR | 100.00% | 100.00%
More than 36 months [member] |  |
Disclosure of financial assets [line items] |  |
Investment subject to Regulatory VaR | $ 43,765 | $ 44,122
Regulatory VaR | $ 6,433 | $ 6,486
Percentage of Portfolio subject to VaR | 100.00% | 100.00%

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