v3.26.1
RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Investments in debt securities at FVTPL (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
Investment securities at fair value [member]    
Disclosure of financial assets [line items]    
Financial assets $ 30,055,436 28,472,926
Debt securities [member] | Investment securities at fair value [member] | Financial assets at fair value through profit or loss, mandatorily measured at fair value, category [member]    
Disclosure of financial assets [line items]    
Financial assets   1,425
Debt securities [member] | Investment securities at fair value [member] | Financial assets at fair value through profit or loss, mandatorily measured at fair value, category [member] | Speculative grade [member]    
Disclosure of financial assets [line items]    
Financial assets   1,425
Corporate | Investment securities at fair value [member] | Financial assets at fair value through profit or loss, mandatorily measured at fair value, category [member] | Speculative grade [member]    
Disclosure of financial assets [line items]    
Financial assets   $ 1,425