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RISK MANAGEMENT - Trading book risk - Net position (Details) - COP ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Financial assets $ 304,853,883 $ 280,746,878
Financial liabilities 274,729,544 249,900,662
Market risk [member]    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Financial assets 40,012,350 32,568,274
Financial liabilities 1,033,592 2,371,927
Net position $ 38,978,758 $ 30,196,347