v3.26.1
RISK MANAGEMENT - Structural interest rate risk - Results of NIM and EVE Shocks (Details) - Interest rate risk [member] - COP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Banco de Bogota S.A. | Parallel Upward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE $ (1,598,433) $ (1,216,132)
Banco de Bogota S.A. | Parallel Downward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE 640,311 311,377
Banco de Bogota S.A. | Steepener Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (92,600) 133,630
Banco de Bogota S.A. | Flattener Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (749,886) (657,975)
Banco de Bogota S.A. | Short Rates Upward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (1,005,023) (692,773)
Banco de Bogota S.A. | Short Rates Downward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE 244,956 135,650
Banco de Occidente S.A. | Parallel Upward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (341,331) (173,433)
Banco de Occidente S.A. | Parallel Downward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (95,121) (268,506)
Banco de Occidente S.A. | Steepener Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE 109,053 130,669
Banco de Occidente S.A. | Flattener Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (259,220) (274,802)
Banco de Occidente S.A. | Short Rates Upward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (255,114) (135,435)
Banco de Occidente S.A. | Short Rates Downward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE 3,285 67,438
Banco Popular S.A. | Parallel Upward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (362,219) (408,513)
Banco Popular S.A. | Parallel Downward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE 183,092 126,470
Banco Popular S.A. | Steepener Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE 96,296 64,031
Banco Popular S.A. | Flattener Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (145,824) (199,153)
Banco Popular S.A. | Short Rates Upward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (266,231) (255,127)
Banco Popular S.A. | Short Rates Downward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE 169,429 83,960
Banco AV Villas | Parallel Upward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (155,062) (73,388)
Banco AV Villas | Parallel Downward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE 13,969 (44,814)
Banco AV Villas | Steepener Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE 38,056 53,457
Banco AV Villas | Flattener Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (110,853) (118,104)
Banco AV Villas | Short Rates Upward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (114,476) (51,821)
Banco AV Villas | Short Rates Downward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE 38,071 $ 9,886
Banco de Bogot, Consolidated [Member] | Parallel Upward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (1,654,667)  
Banco de Bogot, Consolidated [Member] | Parallel Downward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE 704,940  
Banco de Bogot, Consolidated [Member] | Steepener Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (93,334)  
Banco de Bogot, Consolidated [Member] | Flattener Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (761,522)  
Banco de Bogot, Consolidated [Member] | Short Rates Upward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (1,037,879)  
Banco de Bogot, Consolidated [Member] | Short Rates Downward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE 275,954  
Banco de Occidente, Consolidated [Member] | Parallel Upward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (361,923)  
Banco de Occidente, Consolidated [Member] | Parallel Downward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (48,693)  
Banco de Occidente, Consolidated [Member] | Steepener Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE 93,238  
Banco de Occidente, Consolidated [Member] | Flattener Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (240,949)  
Banco de Occidente, Consolidated [Member] | Short Rates Upward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE (252,959)  
Banco de Occidente, Consolidated [Member] | Short Rates Downward Shock [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Increase (decrease) in NIM and EVE $ (3,693)