v3.26.1
CONCESSION ARRANGEMENTS RIGHTS - Assets in concession arrangements (Details) - COP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of detailed information about service concession arrangements [line items]        
Financial assets $ 305,457,293 $ 304,853,883    
Intangible assets 2,954,167 2,758,318 $ 2,382,427 $ 2,040,158
Assets 348,936,677 327,859,383    
Financial assets at fair value through profit or loss, category [member]        
Disclosure of detailed information about service concession arrangements [line items]        
Financial assets 31,969,586 24,400,493    
Financial assets at amortised cost, category [member]        
Disclosure of detailed information about service concession arrangements [line items]        
Financial assets 243,432,271 251,981,889    
Service concession arrangement [member]        
Disclosure of detailed information about service concession arrangements [line items]        
Financial assets 17,066,702 19,260,241 17,812,820 16,153,016
Intangible assets 13,495,108 14,314,560 13,557,267 $ 13,242,706
Assets 30,561,810 33,574,801    
Year impairment charge 648 (709) $ (223)  
Service concession arrangement [member] | Financial assets at fair value through profit or loss, mandatorily measured at fair value, category [member]        
Disclosure of detailed information about service concession arrangements [line items]        
Financial assets 2,635,437 4,181,835    
Service concession arrangement [member] | Financial assets at amortised cost, category [member]        
Disclosure of detailed information about service concession arrangements [line items]        
Financial assets $ 14,431,265 $ 15,078,406