v3.26.1
EMPLOYEE BENEFITS - Post-employment benefit expense (Details) - Post-Employment benefits - COP ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of defined benefit plans [line items]    
Defined contribution plan $ 125,838 $ 116,145
Defined benefit plan 38,643 42,907
Total $ 164,481 $ 159,052