v3.26.1
EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Equity transactions - Minority shareholders (Details) - COP ($)
shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of subsidiaries [line items]    
Total equity transactions $ (22,962) $ (76,823)
Equity attributable to owners of parent [member]    
Disclosure of subsidiaries [line items]    
Total equity transactions (5,105) (63,312)
Non-controlling interests [member]    
Disclosure of subsidiaries [line items]    
Total equity transactions (17,857) (13,511)
Corficolombiana    
Disclosure of subsidiaries [line items]    
Payment of dividends on preferred shares (22,956) (21,823)
Corficolombiana | Equity attributable to owners of parent [member]    
Disclosure of subsidiaries [line items]    
Payment of dividends on preferred shares (9,303) (8,845)
Corficolombiana | Non-controlling interests [member]    
Disclosure of subsidiaries [line items]    
Payment of dividends on preferred shares $ (13,653) $ (12,978)
Valora S.A. | Hoteles Estelar S. A.    
Disclosure of subsidiaries [line items]    
Non-controlling interests, ownership interests, shares acquired (in shares)   (55,000)
Valora S.A. | Equity attributable to owners of parent [member] | Hoteles Estelar S. A.    
Disclosure of subsidiaries [line items]    
Non-controlling interests, ownership interests, shares acquired (in shares)   (4,903)
Valora S.A. | Non-controlling interests [member] | Hoteles Estelar S. A.    
Disclosure of subsidiaries [line items]    
Non-controlling interests, ownership interests, shares acquired (in shares)   (50,097)
Grupo Aval S.A. | Equity attributable to owners of parent [member] | Banco Popular S.A.    
Disclosure of subsidiaries [line items]    
Non-controlling interests, ownership interests, shares acquired (in shares) 3,329  
Grupo Aval S.A. | Equity attributable to owners of parent [member] | Aval Fiduciaria S.A and Aval Casa de Bolsa S.A    
Disclosure of subsidiaries [line items]    
Non-controlling interests, ownership interests, shares acquired (in shares)   (49,564)
Grupo Aval S.A. | Non-controlling interests [member] | Banco Popular S.A.    
Disclosure of subsidiaries [line items]    
Non-controlling interests, ownership interests, shares acquired (in shares) (3,329)  
Grupo Aval S.A. | Non-controlling interests [member] | Aval Fiduciaria S.A and Aval Casa de Bolsa S.A    
Disclosure of subsidiaries [line items]    
Non-controlling interests, ownership interests, shares acquired (in shares)   49,564
Other subsidiaries    
Disclosure of subsidiaries [line items]    
Non-controlling interests, ownership interests, shares acquired (in shares) (6)  
Other subsidiaries | Equity attributable to owners of parent [member]    
Disclosure of subsidiaries [line items]    
Non-controlling interests, ownership interests, shares acquired (in shares) 869  
Other subsidiaries | Non-controlling interests [member]    
Disclosure of subsidiaries [line items]    
Non-controlling interests, ownership interests, shares acquired (in shares) (875)