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Investments in Affiliates (Summarized Income Statement Information) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]      
Revenues $ 67,417 $ 38,954 $ 54,213
Net income 6,687 140 4,825
Equity in earnings of unconsolidated affiliates 246 119 302
Equity Method Investments [Member]      
Schedule of Equity Method Investments [Line Items]      
Revenues 1,003 1,243 1,192
Equity Method Investments Summarized Financial Information, Operating Income 459 6 683
Net income 282 (199) 443
Citrus [Member]      
Schedule of Equity Method Investments [Line Items]      
Equity in earnings of unconsolidated affiliates 157 162 148
FEP [Member]      
Schedule of Equity Method Investments [Line Items]      
Equity in earnings of unconsolidated affiliates [1] 0 (139) 59
MEP [Member]      
Schedule of Equity Method Investments [Line Items]      
Equity in earnings of unconsolidated affiliates (17) (6) 15
Other Affiliates [Member]      
Schedule of Equity Method Investments [Line Items]      
Equity in earnings of unconsolidated affiliates 106 82 76
White Cliffs      
Schedule of Equity Method Investments [Line Items]      
Equity in earnings of unconsolidated affiliates $ 0 $ 20 $ 4
[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.