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 89 $ 63  
Revenues $ 14,259 5,390 $ 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, Ownership Percentage 32.50%   32.50%    
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.    
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, Ownership Percentage 50.00%   50.00%    
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.    
Miles of pipeline 500   500    
Storage capacity 130,000   130,000    
Throughput capacity 36,000   36,000    
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, Ownership Percentage 29.00%   29.00%    
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.    
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, Ownership Percentage 50.00%   50.00%    
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.    
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