v3.26.3
Equity (Cash Distributions) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Nov. 19, 2026
Sep. 18, 2026
Aug. 19, 2026
May 20, 2026
Mar. 18, 2026
Feb. 19, 2026
Mar. 31, 2026
Dec. 31, 2025
Sep. 30, 2026
Sep. 30, 2025
[1]
Distribution Made To Managing Member Or General Partner [Line Items]                    
Distribution Made to Limited Liability Company (LLC) Member, Unit Distribution             $ 0.9899 $ 0.9317    
Distribution Made to Limited Liability Company (LLC) Member, Cash Distributions Paid     $ 52 $ 51   $ 48     $ 151 $ 0
Subsequent Event [Member]                    
Distribution Made To Managing Member Or General Partner [Line Items]                    
Distribution Made to Limited Liability Company (LLC) Member, Cash Distributions Paid $ 52                  
Sunoco LP                    
Distribution Made To Managing Member Or General Partner [Line Items]                    
Preferred Stock, Dividends, Per Share, Cash Paid   $ 39.375     $ 39.375          
Distribution to IDR Holders | Sunoco LP                    
Distribution Made To Managing Member Or General Partner [Line Items]                    
Incentive Distribution, Distribution Per Unit     $ 74 $ 71   $ 60        
Distribution to IDR Holders | Sunoco LP | Subsequent Event [Member]                    
Distribution Made To Managing Member Or General Partner [Line Items]                    
Incentive Distribution, Distribution Per Unit $ 76                  
Common Units [Member] | Sunoco LP                    
Distribution Made To Managing Member Or General Partner [Line Items]                    
Per Unit Distribution (in dollars per unit)     $ 1.0023 $ 0.9899   $ 0.9317        
Distributions on Common Units     $ 137 $ 136   $ 128        
Common Units [Member] | Sunoco LP | Subsequent Event [Member]                    
Distribution Made To Managing Member Or General Partner [Line Items]                    
Per Unit Distribution (in dollars per unit) $ 1.0148                  
Distributions on Common Units $ 139                  
Class D Units | Sunoco LP                    
Distribution Made To Managing Member Or General Partner [Line Items]                    
Distributions on Common Units     $ 52 $ 51   $ 48        
Class D Units | Sunoco LP | Subsequent Event [Member]                    
Distribution Made To Managing Member Or General Partner [Line Items]                    
Distributions on Common Units $ 52                  
[1] See Note 1 regarding change in reporting entity.