v3.26.3
Investment in Unconsolidated Affiliates (Details)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Schedule of Equity Method Investments [Line Items]          
Investments in unconsolidated affiliates $ 1,607   $ 1,607   $ 1,624
Equity in earnings of unconsolidated affiliates 31 $ 40 [1] 120 $ 103 [1]  
Revenues $ 18,029 6,032 [1] $ 42,978 16,601  
Miles of pipeline 14,000   14,000    
ET-S Permian joint venture          
Schedule of Equity Method Investments [Line Items]          
Investments in unconsolidated affiliates $ 1,147   $ 1,147   1,161
Equity in earnings of unconsolidated affiliates $ 25 38 $ 104 98  
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 $ 118   $ 118   121
Equity in earnings of unconsolidated affiliates $ 3 2 $ 6 5  
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 $ 134   $ 134   141
Equity in earnings of unconsolidated affiliates $ 2 0 $ 5 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 $ 178   $ 178   $ 171
Equity in earnings of unconsolidated affiliates $ 2 0 $ 7 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 $ 7,392 5,735 $ 23,581 14,827  
Related Party | ET-S Permian joint venture          
Schedule of Equity Method Investments [Line Items]          
Revenues $ 7,310 $ 5,650 $ 23,310 $ 14,550  
[1] See Note 1 regarding change in reporting entity.