v3.26.1
TRADING ASSETS AND LIABILITIES - Trading assets (Details) - COP ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of financial assets [line items]    
Financial assets $ 305,457,293 $ 304,853,883
Financial assets at fair value through profit or loss, category [member]    
Disclosure of financial assets [line items]    
Financial assets 31,969,586 24,400,493
Trading securities [member]    
Disclosure of financial assets [line items]    
Financial assets 29,097,591 20,163,214
Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member]    
Disclosure of financial assets [line items]    
Financial assets 29,097,591 20,163,214
Debt securities [member] | Trading securities [member]    
Disclosure of financial assets [line items]    
Financial assets 17,582,844 11,937,414
Debt securities [member] | Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member]    
Disclosure of financial assets [line items]    
Financial assets 17,582,844 11,937,414
Trading equity securities [member] | Trading securities [member]    
Disclosure of financial assets [line items]    
Financial assets 9,297,726 7,256,506
Trading equity securities [member] | Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member]    
Disclosure of financial assets [line items]    
Financial assets 9,297,726 7,256,506
Derivatives [member]    
Disclosure of financial assets [line items]    
Financial assets 2,453,579 1,023,313
Derivatives [member] | Trading securities [member]    
Disclosure of financial assets [line items]    
Financial assets 2,217,021 969,294
Derivatives [member] | Trading securities [member] | Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member]    
Disclosure of financial assets [line items]    
Financial assets $ 2,217,021 $ 969,294