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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, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of analysis of other comprehensive income by item [line items]      
Balance $ 31,520,416 $ 30,821,659 $ 39,471,647
Balance 33,162,918 31,520,416 30,821,659
Accumulated other comprehensive income including non-controlling interests      
Disclosure of analysis of other comprehensive income by item [line items]      
Balance (426,398) (988,925) 2,173,950
Current period change 860,230 655,171 (1,733,550)
Realization of OCI to P&L of discontinued operation     (1,429,325)
Realization of OCI (114,097) (92,644)  
Balance 319,735 (426,398) (988,925)
Accumulated other comprehensive income attributable to non-controlling interests      
Disclosure of analysis of other comprehensive income by item [line items]      
Balance 117,821 157,640 1,056,768
Current period change 495,351 (6,447) (452,982)
Realization of OCI to P&L of discontinued operation     (446,146)
Realization of OCI (49,454) (33,372)  
Balance 563,718 117,821 157,640
Accumulated other comprehensive income      
Disclosure of analysis of other comprehensive income by item [line items]      
Balance (544,219) (1,146,565) 1,117,182
Current period change 364,879 661,618 (1,280,568)
Realization of OCI to P&L of discontinued operation     (983,179)
Realization of OCI (64,643) (59,272)  
Balance $ (243,983) $ (544,219) $ (1,146,565)