Reportable Segments Table - Revenues (External and Intersegment) by Investments (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Revenues	$ (21,020)	$ (21,629)
Intersegment Eliminations [Member]
Revenues	(4,087)	(3,023)
Intrastate Transportation And Storage [Member] \| Operating Segments [Member]
Revenues	(1,294)	(918)
Intrastate Transportation And Storage [Member] \| Operating Segments [Member] \| External Customers [Member]
Revenues	(1,147)	(810)
Intrastate Transportation And Storage [Member] \| Operating Segments [Member] \| Intersegment [Member]
Revenues	(147)	(108)
Investment In Sunoco LP [Member] \| Operating Segments [Member]
Revenues	(5,179)	(5,499)
Investment In Sunoco LP [Member] \| Operating Segments [Member] \| External Customers [Member]
Revenues	(5,177)	(5,495)
Investment In Sunoco LP [Member] \| Operating Segments [Member] \| Intersegment [Member]
Revenues	(2)	(4)
Investment In USAC [Member] \| Operating Segments [Member]
Revenues	(245)	(229)
Investment In USAC [Member] \| Operating Segments [Member] \| External Customers [Member]
Revenues	(230)	(223)
Investment In USAC [Member] \| Operating Segments [Member] \| Intersegment [Member]
Revenues	(15)	(6)
Interstate Transportation and Storage [Member] \| Operating Segments [Member]
Revenues	(621)	(602)
Interstate Transportation and Storage [Member] \| Operating Segments [Member] \| External Customers [Member]
Revenues	(613)	(595)
Interstate Transportation and Storage [Member] \| Operating Segments [Member] \| Intersegment [Member]
Revenues	(8)	(7)
Midstream [Member] \| Operating Segments [Member]
Revenues	(3,656)	(2,774)
Midstream [Member] \| Operating Segments [Member] \| External Customers [Member]
Revenues	(884)	(806)
Midstream [Member] \| Operating Segments [Member] \| Intersegment [Member]
Revenues	(2,772)	(1,968)
NGL and refined products transportation and services [Member] \| Operating Segments [Member]
Revenues	(6,909)	(6,526)
NGL and refined products transportation and services [Member] \| Operating Segments [Member] \| External Customers [Member]
Revenues	(6,034)	(5,684)
NGL and refined products transportation and services [Member] \| Operating Segments [Member] \| Intersegment [Member]
Revenues	(875)	(842)
Crude oil transportation and services [Member] \| Operating Segments [Member]
Revenues	(6,208)	(7,638)
Crude oil transportation and services [Member] \| Operating Segments [Member] \| External Customers [Member]
Revenues	(6,205)	(7,638)
Crude oil transportation and services [Member] \| Operating Segments [Member] \| Intersegment [Member]
Revenues	(3)	0
Other Segments [Member] \| Operating Segments [Member]
Revenues	(995)	(466)
Other Segments [Member] \| Operating Segments [Member] \| External Customers [Member]
Revenues	(730)	(378)
Other Segments [Member] \| Operating Segments [Member] \| Intersegment [Member]
Revenues	$ (265)	$ (88)