v3.26.1
HEDGE ACCOUNTING - Fair value hedges (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2025
COP ($)
Dec. 31, 2024
COP ($)
Disclosure of detailed information about hedging instruments [line items]    
Assets $ 236,558 $ 54,019
Liabilities 34,842 21,658
Change in fair value 152,724 (1,372)
Banco de Bogota S.A.    
Disclosure of detailed information about hedging instruments [line items]    
Change in fair value (3,590) 5,960
Banco de Occidente S.A.    
Disclosure of detailed information about hedging instruments [line items]    
Change in fair value $ 146 $ (83)
Corficolombiana S.A    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 1,075,000  
Change in fair value $ (71,734)  
Corporacion Financiera Colombiana S.A.    
Disclosure of detailed information about hedging instruments [line items]    
Change in fair value $ 72,494  
Time deposits [member] | Banco de Bogota S.A.    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 2,813,929 4,644,189
Change in fair value $ 31,309 $ (66,064)
Loan portfolio [member] | Banco de Occidente S.A.    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 1,048,000 411,000
Change in fair value $ (18,076) $ (7,250)
Interest rate swap contract [member] | Banco de Bogota S.A.    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 2,813,929 4,644,189
Change in fair value $ (34,899) $ 68,840
Interest rate swap contract [member] | Banco de Occidente S.A.    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 1,048,000 411,000
Change in fair value $ 18,209 $ 7,333
Interest rate swap contract [member] | Corficolombiana S.A    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 1,075,000  
Change in fair value $ 72,494