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Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures - Associates and Joint ventures (Details) - COP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of consolidated subsidiaries, associates and joint ventures        
Net equity $ 100,252,480 $ 113,903,089 $ 90,583,772 $ 53,499,363
Profit (loss) for the period 25,383,071 35,199,480 $ 17,630,554  
Total assets 280,141,090 302,792,431    
Total liabilities $ 179,888,610 $ 188,889,342    
Equion Energia Limited        
Disclosure of consolidated subsidiaries, associates and joint ventures        
Functional Currency US Dollar      
Ownership interest Ecopetrol, joint venture 51.00%      
Activity, joint venture Exploration and exploitation of hydrocarbons      
Country/Domicile, joint venture United Kingdom      
Geographic area of operations, joint venture Colombia      
Net equity $ 1,329,394      
Profit (loss) for the period 38,718      
Total assets 1,401,176      
Total liabilities $ 71,782      
Ecodiesel Colombia S.A.        
Disclosure of consolidated subsidiaries, associates and joint ventures        
Functional Currency Colombian Peso      
Ownership interest Ecopetrol, joint venture 50.00%      
Activity, joint venture Production, trading, and distribution of biofuels and oleochemicals      
Country/Domicile, joint venture Colombia      
Geographic area of operations, joint venture Colombia      
Net equity $ 170,060      
Profit (loss) for the period 55,099      
Total assets 265,330      
Total liabilities $ 95,270      
Serviport S.A. [Member]        
Disclosure of consolidated subsidiaries, associates and joint ventures        
Functional Currency Colombian Peso      
Ownership interest Ecopetrol, associate 49.00%      
Activity, associate Services for the support of loading and unloading of oil ships, supply of equipment, technical inspections, and load measurements      
Country/Domicile, associate Colombia      
Geographic area of operations, associate Colombia      
Net equity $ 11,274      
Profit (loss) for the period (4,692)      
Total assets 41,082      
Total liabilities $ 29,808      
Sociedad Portuaria Olefinas y Derivados S.A.        
Disclosure of consolidated subsidiaries, associates and joint ventures        
Functional Currency Colombian Peso      
Ownership interest Ecopetrol, associate 50.00%      
Activity, associate Construction, use, maintenance and administration of port facilities, ports, private docks.      
Country/Domicile, associate Colombia      
Geographic area of operations, associate Colombia      
Net equity $ 8,476      
Profit (loss) for the period 2,904      
Total assets 12,219      
Total liabilities $ 3,743