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Reportable Segments (Assets Segments) (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Assets $ 105,963 $ 95,144 $ 98,973
Intrastate Transportation and Storage      
Assets 7,322 6,308 6,648
Interstate Transportation and Storage      
Assets 17,774 17,582 18,111
Midstream      
Assets 21,960 18,583 20,332
NGL and Refined Products Transportation and Services      
Assets 28,160 21,423 19,145
Crude Oil Transportation and Services      
Assets 19,649 17,960 22,933
Investment in Sunoco LP      
Assets 5,815 5,267 5,438
Investment in USAC      
Assets 2,768 2,949 3,730
Corporate and Other [Member]      
Assets $ 2,515 $ 5,072 $ 2,636