v3.25.3
Cover - shares
 9 Months Ended
Sep. 30, 2025
Oct. 29, 2025
Entity Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2025  
Document Transition Report false  
Entity File Number 1-12295  
Entity Registrant Name GENESIS ENERGY LP  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 76-0513049  
Entity Address, Address Line One 811 Louisiana, Suite 1200,  
Entity Address, City or Town Houston  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 77002  
City Area Code (713)  
Local Phone Number 860-2500  
Title of 12(b) Security Common units  
Trading Symbol GEL  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Central Index Key 0001022321  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q3  
Amendment Flag false  
Class A Common Units    
Entity Information [Line Items]    
Entity Common Stock, Shares Outstanding   122,424,321
Class B Common Units    
Entity Information [Line Items]    
Entity Common Stock, Shares Outstanding   39,997