v3.26.1
INVESTMENTS IN ASSOCIATES AND JOINT VENTURES - Roll forward of investment in joint ventures (Details) - COP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of joint ventures [line items]      
Balance at the beginning of the year $ 1,410    
Participation in the profit or loss of the period 3,188,526 $ 2,165,813 $ 2,114,108
Year-end balance 1,683 1,410  
Joint ventures      
Disclosure of joint ventures [line items]      
Balance at the beginning of the year 1,410 2,042 4,047
Participation in the profit or loss of the period 273 (632) (2,005)
Year-end balance $ 1,683 $ 1,410 $ 2,042