v3.26.1
Document and Entity Information - shares
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Document and Entity Information      
Document Type 20-F    
Document Registration Statement false    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Document Transition Report false    
Document Shell Company Report false    
Entity File Number 001-34175    
Entity Registrant Name ECOPETROL S.A.    
Entity Incorporation, State or Country Code CO    
Entity Address, Address Line One Carrera 13 No. 36 – 24    
Entity Address, City or Town Bogotá    
Entity Address, Postal Zip Code 00000    
Entity Address, Country CO    
Entity Common Stock, Shares Outstanding 41,116,694,690    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Document Accounting Standard International Financial Reporting Standards    
Entity Shell Company false    
Entity Central Index Key 0001444406    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Amendment Flag false    
Auditor Name Deloitte & Touche S.A.S. Ernst & Young Audit S.A.S. Ernst & Young Audit S.A.S.
Auditor Firm ID 1183 1522 1522
Auditor Location Bogotá, Colombia Bogotá D.C., Colombia Bogotá D.C., Colombia
Common shares      
Document and Entity Information      
Title of 12(b) Security Ecopetrol common shares par value COP 609 per share    
Trading Symbol EC    
Security Exchange Name NYSE    
American depository receipts      
Document and Entity Information      
Title of 12(b) Security American Depository Shares (as evidenced by American Depository Receipts), each representing 20 common shares par value COP 609 per share    
Trading Symbol EC    
Security Exchange Name NYSE    
Business Contact      
Document and Entity Information      
Contact Personnel Name Maria Fernanda Moreno Rodriguez    
Contact Personnel Email Address investors@ecopetrol.com.co    
Entity Address, Address Line One Carrera 13 No.36 - 24    
Entity Address, City or Town Bogotá    
Entity Address, Postal Zip Code 00000    
Entity Address, Country CO    
Country Region 57    
City Area Code 310    
Local Phone Number 315 8600