v3.26.1
Investment in Unconsolidated Affiliates (Details)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Schedule of Equity Method Investments [Line Items]          
Investments in unconsolidated affiliates $ 1,610   $ 1,610   $ 1,624
Equity in earnings of unconsolidated affiliates 47 $ 31 [1] 89 $ 63 [1]  
Revenues $ 14,259 5,390 [1] $ 24,949 10,569  
Miles of pipeline 14,000   14,000    
ET-S Permian joint venture          
Schedule of Equity Method Investments [Line Items]          
Investments in unconsolidated affiliates $ 1,151   $ 1,151   1,161
Equity in earnings of unconsolidated affiliates $ 42 30 $ 79 60  
Equity Method Investment, Description of Principal Activities     Sunoco owns a 32.5% interest in ET-S Permian, which operates more than 5,000 miles of crude oil and water gathering pipelines with crude oil storage capacity in excess of 11 million barrels.    
Equity Method Investment, Ownership Percentage 32.50%   32.50%    
Miles of pipeline 5,000   5,000    
Crude oil storage capacity, measured in barrels 11,000,000   11,000,000    
J.C. Nolan Joint Venture          
Schedule of Equity Method Investments [Line Items]          
Investments in unconsolidated affiliates $ 117   $ 117   121
Equity in earnings of unconsolidated affiliates $ 1 1 $ 3 3  
Equity Method Investment, Description of Principal Activities     Sunoco owns a 50% interest in J.C. Nolan, which provides diesel fuel storage in Midland, Texas with storage capacity of 130,000 barrels and transports diesel fuel from a tank farm in Hebert, Texas to Midland, Texas on a 500-mile pipeline with a throughput capacity of approximately 36 thousand barrels per day.    
Equity Method Investment, Ownership Percentage 50.00%   50.00%    
Miles of pipeline 500   500    
Throughput capacity 36,000   36,000    
Storage capacity 130,000   130,000    
SARA          
Schedule of Equity Method Investments [Line Items]          
Investments in unconsolidated affiliates $ 132   $ 132   141
Equity in earnings of unconsolidated affiliates $ 2 0 $ 3 0  
Equity Method Investment, Description of Principal Activities     Sunoco owns a 29% interest in SARA, which is a refinery based in Martinique with operations to sell refined crude oil in Guadeloupe, French Guiana and Martinique.    
Equity Method Investment, Ownership Percentage 29.00%   29.00%    
Isla          
Schedule of Equity Method Investments [Line Items]          
Investments in unconsolidated affiliates $ 179   $ 179   $ 171
Equity in earnings of unconsolidated affiliates $ 2 0 $ 5 0  
Equity Method Investment, Description of Principal Activities     Sunoco owns a 50% interest in Isla, which is comprised of over 200 retail locations alongside an integrated commercial and aviation business in the Dominican Republic.    
Equity Method Investment, Ownership Percentage 50.00%   50.00%    
Number of retail locations 200   200    
ET-S Permian joint venture          
Schedule of Equity Method Investments [Line Items]          
Revenues $ 9,051 5,632 $ 16,189 9,092  
Related Party | ET-S Permian joint venture          
Schedule of Equity Method Investments [Line Items]          
Revenues $ 8,960 $ 5,550 $ 16,000 $ 8,900  
[1] See Note 1 regarding change in reporting entity.