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Taxes - Deferred tax assets and liabilities (Details) - COP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2019
Taxes        
Deferred tax assets (liabilities) $ (1,301,790) $ (86,856) $ (1,825,605) $ 6,034,706
Ecopetrol USA Inc.        
Taxes        
Deferred tax assets operating loss carry forwards not subject to expiration 60,568 339,950    
Refineria De Cartagana [Member]        
Taxes        
Deferred tax assets operating loss carry forwards not subject to expiration 1,916,114 1,871,732    
ISA Interchile        
Taxes        
Operating loss carryforwards, subject to expiration $ 933,113 1,104,625    
Invercolsa S.A.        
Taxes        
Deferred tax asset attributable to deductible operating loss carryforwards 12 years      
Operating loss carryforwards, subject to expiration $ 16,112 17,524    
Ruta de la Araucana and Transamerican        
Taxes        
Operating loss carryforwards, subject to expiration 45,147 111,273    
Ruta Costera        
Taxes        
Operating loss carryforwards, subject to expiration 174,855 84,964    
Internexa Chile        
Taxes        
Operating loss carryforwards, subject to expiration 16,062      
Ruta del Maipo        
Taxes        
Operating loss carryforwards, subject to expiration 759,609 1,000,632    
Ruta del Loa        
Taxes        
Operating loss carryforwards, subject to expiration 30,057 27,472    
Loans        
Taxes        
Deferred tax assets (liabilities) 192,923 8,707,743    
Loss carry forwards        
Taxes        
Deferred tax assets (liabilities) 5,519,519 6,497,845    
Deferred tax asset (liability) $ 5,519,519 6,497,845    
Deferred tax asset attributable to deductible operating loss carryforwards 20 years      
Operating loss carryforwards, subject to expiration $ 1,499,997 1,887,805    
Provisions        
Taxes        
Deferred tax assets (liabilities) 5,063,332 3,712,239    
Other assets        
Taxes        
Deferred tax assets (liabilities) 689,369 1,144,097    
Employee benefits        
Taxes        
Deferred tax assets (liabilities) 3,623,801 963,558    
Accounts payable        
Taxes        
Deferred tax assets (liabilities) (60,255) 54,611    
Goodwill        
Taxes        
Deferred tax assets (liabilities) (603,445) (604,350)    
Intangibles        
Taxes        
Deferred tax assets (liabilities) (1,208,349) (1,573,224)    
Other        
Taxes        
Deferred tax assets (liabilities) (387,146) (182,419)    
Other liabilities        
Taxes        
Deferred tax assets (liabilities) (3,429,662) (2,887,670)    
Accounts receivable        
Taxes        
Deferred tax assets (liabilities) (3,766,299) (4,558,699)    
Property plant and equipment and Natural and environmental resources        
Taxes        
Deferred tax assets (liabilities) $ (6,935,578) $ (11,360,587)