v3.26.1
ESTIMATION OF FAIR VALUE - Fair value of financial assets recognized at amortized cost (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 amortised cost, category [member]    
Disclosure of financial assets [line items]    
Financial assets 243,432,271 251,981,889
Financial assets at amortised cost, category [member] | Loan portfolio and investments in debt securities at amortised cost [member]    
Disclosure of financial assets [line items]    
Financial assets 193,423,152 200,819,178
Financial assets at fair value 195,070,693 199,972,606
Financial assets at amortised cost, category [member] | Investment securities at amortised cost [member]    
Disclosure of financial assets [line items]    
Financial assets 9,197,179 10,689,692
Financial assets at fair value 9,239,039 10,715,384
Financial assets at amortised cost, category [member] | Loan portfolio [member]    
Disclosure of financial assets [line items]    
Financial assets 184,225,973 190,129,486
Financial assets at fair value $ 185,831,654 $ 189,257,222