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EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Consolidated other comprehensive income - Non-controlling interest (Details) - COP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of analysis of other comprehensive income by item [line items]      
Balance $ 30,821,659 $ 39,471,647 $ 35,439,557
Balance 31,520,416 30,821,659 39,471,647
Accumulated other comprehensive income including non-controlling interests      
Disclosure of analysis of other comprehensive income by item [line items]      
Balance (988,925) 2,173,950 1,721,191
Current period change 655,171 (1,733,550) 452,759
Realization of OCI to P&L of discontinued operation   (1,429,325)  
Realization of OCI (92,644)    
Balance (426,398) (988,925) 2,173,950
Accumulated other comprehensive income attributable to non-controlling interests      
Disclosure of analysis of other comprehensive income by item [line items]      
Balance 157,640 1,056,768 859,178
Current period change (6,447) (452,982) 197,590
Realization of OCI to P&L of discontinued operation   (446,146)  
Realization of OCI (33,372)    
Balance 117,821 157,640 1,056,768
Accumulated other comprehensive income      
Disclosure of analysis of other comprehensive income by item [line items]      
Balance (1,146,565) 1,117,182 862,013
Current period change 661,618 (1,280,568) 255,169
Realization of OCI to P&L of discontinued operation   (983,179)  
Realization of OCI (59,272)    
Balance $ (544,219) $ (1,146,565) $ 1,117,182