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Cash and cash equivalents - Additional Information (Details) - COP ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Cash and cash equivalents    
Restricted cash $ 1,905,664 $ 1,724,488
Return on cash and cash equivalents 6.70% 9.80%
Interconexion Electrica S.A. E.S.P.    
Cash and cash equivalents    
Restricted cash $ 1,904,745 $ 1,580,106
Cenit    
Cash and cash equivalents    
Restricted cash   143,464
Other Companies    
Cash and cash equivalents    
Restricted cash $ 919 $ 918