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Reportable Segments (Assets Segments) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Assets $ 113,698 $ 105,643 $ 105,963
Intrastate Transportation and Storage | Operating Segments      
Assets 6,112 6,609 7,322
Interstate Transportation and Storage | Operating Segments      
Assets 17,708 17,979 17,774
Midstream | Operating Segments      
Assets 25,592 21,851 21,960
NGL and Refined Products Transportation and Services | Operating Segments      
Assets 27,214 27,903 28,160
Crude Oil Transportation and Services | Operating Segments      
Assets 25,464 19,200 19,649
Investment in Sunoco LP | Operating Segments      
Assets 6,826 6,830 5,815
Investment in USAC | Operating Segments      
Assets 2,737 2,666 2,768
Corporate and Other [Member]      
Assets $ 2,045 $ 2,605 $ 2,515