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FINANCIAL OBLIGATIONS - Borrowings from development entities - Tabular disclosure (Details) - COP ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Disclosure of detailed information about borrowings [line items]    
Other borrowings $ 4,813,133 $ 4,357,275
BANCOLDEX [member]    
Disclosure of detailed information about borrowings [line items]    
Other borrowings $ 1,136,527 1,632,763
BANCOLDEX [member] | Bottom of range [member]    
Disclosure of detailed information about borrowings [line items]    
Interest Rate 2.19%  
BANCOLDEX [member] | Top of range [member]    
Disclosure of detailed information about borrowings [line items]    
Interest Rate 20.96%  
BANCOLDEX [member] | DTF [member] | Bottom of range [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowing rate interest rate basis 0.30%  
BANCOLDEX [member] | DTF [member] | Top of range [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowing rate interest rate basis 12.64%  
BANCOLDEX [member] | IBR [member] | Bottom of range [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowing rate interest rate basis 0.05%  
BANCOLDEX [member] | IBR [member] | Top of range [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowing rate interest rate basis 19.17%  
BANCOLDEX [member] | SOFR6 | Bottom of range [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowing rate interest rate basis 5.33%  
BANCOLDEX [member] | SOFR6 | Top of range [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowing rate interest rate basis 5.49%  
FINAGRO [member]    
Disclosure of detailed information about borrowings [line items]    
Other borrowings $ 1,482,091 722,857
FINAGRO [member] | Bottom of range [member]    
Disclosure of detailed information about borrowings [line items]    
Interest Rate 7.30%  
FINAGRO [member] | Top of range [member]    
Disclosure of detailed information about borrowings [line items]    
Interest Rate 15.69%  
FINAGRO [member] | DTF [member] | Bottom of range [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowing rate interest rate basis 0.50%  
FINAGRO [member] | DTF [member] | Top of range [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowing rate interest rate basis 8.60%  
FINAGRO [member] | IBR [member] | Bottom of range [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowing rate interest rate basis 0.40%  
FINAGRO [member] | IBR [member] | Top of range [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowing rate interest rate basis 15.38%  
FINDETER [member]    
Disclosure of detailed information about borrowings [line items]    
Other borrowings $ 2,194,515 $ 2,001,655
FINDETER [member] | Bottom of range [member]    
Disclosure of detailed information about borrowings [line items]    
Interest Rate 9.47%  
FINDETER [member] | Top of range [member]    
Disclosure of detailed information about borrowings [line items]    
Interest Rate 19.57%  
FINDETER [member] | DTF [member] | Bottom of range [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowing rate interest rate basis 1.00%  
FINDETER [member] | DTF [member] | Top of range [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowing rate interest rate basis 7.92%  
FINDETER [member] | IBR [member] | Bottom of range [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowing rate interest rate basis 0.40%  
FINDETER [member] | IBR [member] | Top of range [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowing rate interest rate basis 19.12%  
FINDETER [member] | CPI [member] | Bottom of range [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowing rate interest rate basis 0.50%  
FINDETER [member] | CPI [member] | Top of range [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowing rate interest rate basis 7.92%