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RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Derivative instruments - Trading derivatives - Liabilities (Details) - COP ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Disclosure of financial liabilities [line items]    
Financial liabilities $ 274,729,544 $ 249,900,662
Financial liabilities at fair value through profit or loss, category [member]    
Disclosure of financial liabilities [line items]    
Financial liabilities 1,033,592 2,371,927
Trading derivatives [member] | Financial liabilities at fair value through profit or loss, classified as held for trading, category [member]    
Disclosure of financial liabilities [line items]    
Financial liabilities 1,011,934 2,154,361
Derivatives [member] | Trading derivatives [member]    
Disclosure of financial liabilities [line items]    
Financial liabilities 1,011,934 2,154,361
Derivatives [member] | Trading derivatives [member] | Financial liabilities at fair value through profit or loss, classified as held for trading, category [member]    
Disclosure of financial liabilities [line items]    
Notional amount 64,053,439 64,716,179
Financial liabilities 1,011,934 2,154,361
Derivatives [member] | Trading derivatives [member] | Financial liabilities at fair value through profit or loss, classified as held for trading, category [member] | Central counterparties [member]    
Disclosure of financial liabilities [line items]    
Notional amount 10,715,432 15,739,527
Financial liabilities $ 6,646 $ 10,399