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FINANCIAL OBLIGATIONS - Interbank borrowings, overnight funds - Tabular disclosure (Details) - COP ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Disclosure of detailed information about borrowings [line items]    
Total interbank borrowings and overnight funds $ 18,509,769 $ 15,081,920
Colombia, Pesos    
Disclosure of detailed information about borrowings [line items]    
Overnight funds 41,570 24,539
Interbank funds purchased 781,409 671,542
Commitments to transfer open and closed repo operations 9,898,971 3,746,752
Commitments to transfer simultaneous operations 5,648,747 9,158,585
Commitments originated in short positions simultaneous operations 1,093,006 1,093,314
Temporary securities transfer operations 2  
Total interbank funds 17,463,705 14,694,732
Foreign currency [member]    
Disclosure of detailed information about borrowings [line items]    
Overnight funds   14,241
Commitments to transfer open and closed repo operations 1,046,064 372,947
Total interbank funds $ 1,046,064 $ 387,188