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Advances to and Investments in Unconsolidated Affiliates Investment in Affiliates (Carrying Values) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Investments in unconsolidated affiliates [1] $ 3,266 $ 3,097 $ 2,893
Equity in earnings of unconsolidated affiliates [2] 379 383 257
Other Affiliates [Member]      
Equity in earnings of unconsolidated affiliates 82 72 67
Citrus [Member]      
Investments in unconsolidated affiliates 1,818 1,811  
Equity in earnings of unconsolidated affiliates 136 146 141
MEP [Member]      
Investments in unconsolidated affiliates 309 332  
Equity in earnings of unconsolidated affiliates 63 87 10
White Cliffs      
Investments in unconsolidated affiliates 196 203  
Equity in earnings of unconsolidated affiliates 19 10 (8)
Other      
Investments in unconsolidated affiliates 654 647  
Explorer      
Investments in unconsolidated affiliates 66 67  
Equity in earnings of unconsolidated affiliates 34 37 25
SESH      
Investments in unconsolidated affiliates 223 37  
Equity in earnings of unconsolidated affiliates $ 45 $ 31 $ 22
[1] Amounts reflected above exclude Sunoco LP’s investments in the ET-S Permian and J.C. Nolan joint ventures, which are eliminated in consolidation.
[2] Amounts reflected above exclude Sunoco LP’s earnings from the ET-S Permian and J.C. Nolan joint ventures, which are eliminated in consolidation.