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Reporting Segments (Additions To Property Plant And Equipment Including Acquisitions Net Of Contributions In Aid Of Construction Costs Segments) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Segment Reporting Information [Line Items]      
Property, Plant and Equipment, Additions [1] $ 2,158 $ 3,759 $ 5,268
Investment in Sunoco LP      
Segment Reporting Information [Line Items]      
Property, Plant and Equipment, Additions [1] 174 124 148
Intrastate Transportation and Storage      
Segment Reporting Information [Line Items]      
Property, Plant and Equipment, Additions [1] 52 49 124
Interstate Transportation and Storage      
Segment Reporting Information [Line Items]      
Property, Plant and Equipment, Additions [1] 159 150 375
Midstream      
Segment Reporting Information [Line Items]      
Property, Plant and Equipment, Additions [1] 484 487 827
NGL and Refined Products Transportation and Services      
Segment Reporting Information [Line Items]      
Property, Plant and Equipment, Additions [1] 751 2,403 2,976
Crude Oil Transportation and Services      
Segment Reporting Information [Line Items]      
Property, Plant and Equipment, Additions [1] 343 291 403
Investment in USAC      
Segment Reporting Information [Line Items]      
Property, Plant and Equipment, Additions [1] 60 119 200
All Other      
Segment Reporting Information [Line Items]      
Property, Plant and Equipment, Additions [1] $ 135 $ 136 $ 215
[1] Excluding acquisitions, net of contributions in aid of construction costs (capital expenditures related to the Partnership’s proportionate ownership on an accrual basis).