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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, 2022
Dec. 31, 2021
Dec. 31, 2020
Investments in unconsolidated affiliates $ 2,893 $ 2,947 $ 3,060
Equity in earnings of unconsolidated affiliates 257 246 119
Impairment losses and other 386 21 2,880
Other Affiliates [Member]      
Equity in earnings of unconsolidated affiliates [1] 89 82 (74)
Citrus [Member]      
Investments in unconsolidated affiliates 1,800 1,792  
Equity in earnings of unconsolidated affiliates 141 157 162
MEP [Member]      
Investments in unconsolidated affiliates 360 378  
Equity in earnings of unconsolidated affiliates 10 (17) (6)
White Cliffs      
Investments in unconsolidated affiliates 218 245  
Equity in earnings of unconsolidated affiliates (8) 0 20
Other      
Investments in unconsolidated affiliates 446 461  
FEP [Member]      
Impairment losses and other 208    
Explorer      
Investments in unconsolidated affiliates 69 71  
Equity in earnings of unconsolidated affiliates $ 25 $ 24 $ 17
[1] For the year ended December 31, 2020, equity in earnings (losses) of unconsolidated affiliates includes the impact of non-cash impairments recorded by FEP, which reduced the Partnership’s equity in earnings by $208 million.