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HEDGE ACCOUNTING - Financial instruments for hedging - assets (Details) - COP ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Disclosure of financial assets [line items]    
Assets $ 54,019 $ 48,662
Forward contract [member]    
Disclosure of financial assets [line items]    
Assets 10,642 687
Forward contracts, Foreign currency to buy    
Disclosure of financial assets [line items]    
Assets 10,623 687
Forward contracts, Foreign currency to sell    
Disclosure of financial assets [line items]    
Assets 19  
Swap contract [member]    
Disclosure of financial assets [line items]    
Assets 43,377 47,975
Interest rate swap    
Disclosure of financial assets [line items]    
Assets $ 43,377 $ 47,975