v3.26.1
Risk management - Additional Information (Details)
$ in Millions, $ in Billions
 12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2025
COP ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
COP ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
COP ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
COP ($)
Risk management                
Closing balance exchange rate   3,757.08 3,757.08 4,409.15 4,409.15      
Net position of assets and liabilities different functional currency $ 619              
variation in the exchange rate 15.00%              
Scenario / variation in the exchange rate 8.00%              
Bottom of range                
Risk management                
Renewable energy installed capacity 30.00%              
Top of range                
Risk management                
Renewable energy installed capacity 40.00%              
Floating interest rate                
Risk management                
Borrowings, interest rate   31.11% 31.11% 28.91% 28.91% 31.02% 31.02%  
Colombian Peso                
Risk management                
Net liabilities of companies in the group with a different functional currency     $ 16,813          
Exchange difference valuation of remaining net liabilities     535          
US Dollar                
Risk management                
Exchange difference valuation of remaining net liabilities     17,348          
variation in the exchange rate 15.00%              
Scenario / variation in the exchange rate 8.00%              
Hedge of a net investment in a foreign operation                
Risk management                
Hedging instrument at the end of the period   $ 2,718 10,001 $ 6,467   $ 3,141   $ 9,354
Hedge of a net investment in a foreign operation | Ecopetrol Business Group                
Risk management                
Hedging instrument at the end of the period     9,671          
Hedge of a net investment in a foreign operation | ISA Colombia                
Risk management                
Hedging instrument at the end of the period     330          
Cash flow hedging                
Risk management                
Hedging instrument at the end of the period     $ 7,347   $ 7,343   $ 6,265  
Credit risk in Peso portfolio                
Risk management                
Maximum percentage of cash investment held in portfolio 10.00%              
Us Dollar Portfolio                
Risk management                
variation in the exchange rate 5.00%              
Scenario / variation in the exchange rate 1.00%              
Commodity price risk | Brent Put Options                
Risk management                
Total net asset (liability) position in swaps   48            
Commodity price risk | TRM Collars                
Risk management                
Total net asset (liability) position in swaps   $ 33            
Currency risk                
Risk management                
Increase decrease in foreign exchange rate 14.79%