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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, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures        
Net equity $ 105,913,439 $ 100,252,480 $ 113,903,089 $ 90,583,772
Profit (loss) 18,498,875 25,383,071 $ 35,199,480  
Total assets 298,242,156 280,141,090    
Total liabilities $ 192,328,717 $ 179,888,610    
Serviport S.A.        
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures        
Functional currency Colombian Peso      
Ownership interest, associate 28.00%      
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 $ 17,309      
Profit (loss) (2,069)      
Total assets 35,953      
Total liabilities $ 18,644      
Sociedad Portuaria Olefinas y Derivados S.A.        
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures        
Functional currency Colombian Peso      
Ownership interest, 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 $ 6,761      
Profit (loss) (1,224)      
Total assets 8,500      
Total liabilities $ 1,739      
Equion Energia Limited        
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures        
Functional currency US Dollar      
Ownership interest, 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 $ 1,597,163      
Profit (loss) 49,936      
Total assets 1,667,884      
Total liabilities $ 70,721      
Ecodiesel Colombia S.A.        
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures        
Functional currency Colombian Peso      
Ownership interest, 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 $ 138,108      
Profit (loss) 30,895      
Total assets 253,132      
Total liabilities $ 115,024