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HEDGE ACCOUNTING - Financial instruments for hedging - liabilities (Details) - COP ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Disclosure of financial liabilities [line items]    
Assets $ 54,019 $ 48,662
Liabilities 21,658 217,566
Forward contract [member]    
Disclosure of financial liabilities [line items]    
Liabilities 5,250 204,202
Forward contracts, Foreign currency to buy    
Disclosure of financial liabilities [line items]    
Liabilities 5,185 204,202
Forward contracts, Foreign currency to sell    
Disclosure of financial liabilities [line items]    
Liabilities 65  
Swap contract [member]    
Disclosure of financial liabilities [line items]    
Liabilities 16,408 13,364
Interest rate swap    
Disclosure of financial liabilities [line items]    
Liabilities $ 16,408 $ 13,364