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Equity - Other comprehensive income (Details) - COP ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Equity      
Financial instruments measured at fair value $ 883,112 $ (4,580,806)  
Other comprehensive income      
Equity      
Foreign currency translation 19,275,938   $ 15,055,305
Hedge of a net investment in a foreign operation (5,301,144)   (3,165,320)
Gains and loss on defined benefit obligation (4,084,451)   (3,942,417)
Cash flow hedging - Future crude oil exports (549,508)   601,744
Cash flow hedging - Derivative financial instruments 81,358   124,384
Financial instruments measured at fair value 717   952
Other comprehensive income attributable to owners of parent $ 9,422,910   $ 8,674,648