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REPORTING ENTITY - Sale of BAC Holding - Textual (Details) - COP ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 19, 2022
Dec. 14, 2022
Mar. 31, 2022
Dec. 31, 2022
Dec. 31, 2021
Disclosure of analysis of single amount of discontinued operations [line items]          
Value issuance of shares       $ 1,655,855 $ 120
BAC Holding International Corp          
Disclosure of analysis of single amount of discontinued operations [line items]          
Share price (in dollar per share)   $ 293      
BAC Holding International Corp | Banco de Bogota S.A.          
Disclosure of analysis of single amount of discontinued operations [line items]          
Proportion of ownership interest in associate     25.00%    
Percentage of investment in associates ceased and recognized as financial assets 4.11% 4.11%      
Banco de Bogota S.A. | BAC Holding International Corp          
Disclosure of analysis of single amount of discontinued operations [line items]          
Number shares sold   9,030,424,454      
Value issuance of shares   $ 2,645,914      
BAC Holding International Corp | Banco de Bogota S.A.          
Disclosure of analysis of single amount of discontinued operations [line items]          
Percentage Of Spin Off     75.00%