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HEDGE ACCOUNTING - Textual (Details)
$ in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2023
COP ($)
Dec. 31, 2022
COP ($)
Dec. 31, 2021
COP ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Disclosure of detailed information about hedging instruments [line items]          
Other financial liabilities, hedge net foreign investment       $ 298 $ 1,095
Reclassification adjustments on cash flow hedges, net of tax $ 11,870 $ (9,391) $ 16,859    
Bottom of range [member]          
Disclosure of detailed information about hedging instruments [line items]          
Percentage of hedging effectiveness       80  
Top of range [member]          
Disclosure of detailed information about hedging instruments [line items]          
Percentage of hedging effectiveness       125  
Hedges of net investment in foreign operations | Multi financial holding and other subsidiaries and branches [member]          
Disclosure of detailed information about hedging instruments [line items]          
Bonds issued designated as hedging instruments       $ 510 $ 510