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RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Derivative instruments - Assets (Details) - COP ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Disclosure of financial assets [line items]    
Financial assets $ 280,746,878 $ 274,682,875
Derivatives [member]    
Disclosure of financial assets [line items]    
Financial assets 2,126,229 2,062,259
Derivatives [member] | Investment grade [member]    
Disclosure of financial assets [line items]    
Financial assets 1,398,093 1,257,143
Derivatives [member] | Speculative grade [member]    
Disclosure of financial assets [line items]    
Financial assets 22,274 4,165
Derivatives [member] | Without grade or not available [member]    
Disclosure of financial assets [line items]    
Financial assets $ 705,862 $ 800,951