v3.26.1
Document And Entity Information - shares
6 Months Ended
Jun. 30, 2026
Jul. 31, 2026
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Entity File Number 001-42928  
Entity Registrant Name SUNOCOCORP LLC  
Entity Incorporation, State or Country Code TX  
Entity Tax Identification Number 85-0470977  
Entity Address, Address Line One 8111 Westchester Drive  
Entity Address, Address Line Two Suite 400  
Entity Address, City or Town Dallas  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 75225  
City Area Code 214  
Local Phone Number 981-0700  
Title of 12(b) Security Common Units Representing Limited Liability Company Interests  
Trading Symbol SUNC  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Central Index Key 0002089661  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Entity Partnership Units Outstanding   51,517,198