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Cash and cash equivalents - Additional Information (Details) - COP ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Cash and cash equivalents    
Restricted cash $ 1,724,488 $ 2,067,279
Return on cash and cash equivalents 9.80% 8.50%
Interconexion Electrica S.A. E.S.P.    
Cash and cash equivalents    
Restricted cash $ 1,580,106 $ 1,987,409
Cenit    
Cash and cash equivalents    
Restricted cash 143,464 $ 79,870
Other Companies    
Cash and cash equivalents    
Restricted cash $ 918