v3.26.1
RISK MANAGEMENT - Investment debt securities - Concentration by location (Details) - COP ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of financial assets [line items]    
Financial assets $ 305,457,293 $ 304,853,883
Debt securities | Gross carrying amount    
Disclosure of financial assets [line items]    
Financial assets 55,244,258 49,697,404
Debt securities | Gross carrying amount | Countries    
Disclosure of financial assets [line items]    
Financial assets 55,183,693 49,359,851
Debt securities | Gross carrying amount | COLOMBIA    
Disclosure of financial assets [line items]    
Financial assets 50,054,384 39,769,376
Debt securities | Gross carrying amount | PANAMA    
Disclosure of financial assets [line items]    
Financial assets 3,385,573 6,114,059
Debt securities | Gross carrying amount | UNITED STATES    
Disclosure of financial assets [line items]    
Financial assets 567,849 1,543,389
Debt securities | Gross carrying amount | BRAZIL    
Disclosure of financial assets [line items]    
Financial assets 188,017 128,970
Debt securities | Gross carrying amount | MEXICO    
Disclosure of financial assets [line items]    
Financial assets 343,116 583,979
Debt securities | Gross carrying amount | COSTA RICA    
Disclosure of financial assets [line items]    
Financial assets   110,714
Debt securities | Gross carrying amount | CHILE    
Disclosure of financial assets [line items]    
Financial assets 372,114 524,430
Debt securities | Gross carrying amount | PERU    
Disclosure of financial assets [line items]    
Financial assets 231,408 443,698
Debt securities | Gross carrying amount | PARAGUAY    
Disclosure of financial assets [line items]    
Financial assets   102,473
Debt securities | Gross carrying amount | JAPAN    
Disclosure of financial assets [line items]    
Financial assets 25,795 22,957
Debt securities | Gross carrying amount | GERMANY    
Disclosure of financial assets [line items]    
Financial assets 15,437 15,806
Debt securities | Gross carrying amount | Multilateral    
Disclosure of financial assets [line items]    
Financial assets 60,565 337,553
Debt securities | Gross carrying amount | Multilateral - Bladex (Foreign Trade Bank of Latin America)    
Disclosure of financial assets [line items]    
Financial assets   216,218
Debt securities | Gross carrying amount | Multilateral - Andean Development Corporation (Corporacion Andina de Fomento)    
Disclosure of financial assets [line items]    
Financial assets 51,853 117,061
Debt securities | Gross carrying amount | Multilateral - Inter-American Corporation for the Financing of Infrastructure    
Disclosure of financial assets [line items]    
Financial assets $ 8,712 $ 4,274