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Risk management - Cash flow hedge for future exports (Movement in other comprehensive income) (Details) - COP ($)
$ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2024
Dec. 31, 2023
Risk management    
Opening balance $ (601,744) $ 2,473,999
Exchange difference 2,016,943 (5,194,529)
Realized exports (Note 24) 40,114 (479,779)
Ineffectiveness 2,330 (25,454)
Deferred tax (908,135) 2,624,019
Closing balance $ 549,508 $ (601,744)