Reportable Segments Table - Revenues (External and Intersegment) by Investments (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues	$ (20,739)	$ (22,939)	$ (58,054)	$ (69,375)
Intersegment Eliminations [Member]
Revenues	3,112	5,212	(9,391)	(14,971)
Intrastate Transportation And Storage [Member]
Revenues	(973)	(2,383)	(3,070)	(6,218)
Investment In Sunoco LP [Member]
Revenues	(6,320)	(6,594)	(17,427)	(19,811)
Investment In USAC [Member]
Revenues	(217)	(179)	(621)	(514)
Interstate Transportation and Storage [Member]
Revenues	(571)	(549)	(1,755)	(1,645)
Midstream [Member]
Revenues	(2,777)	(4,871)	(7,999)	(13,846)
NGL and refined products transportation and services [Member]
Revenues	(5,260)	(6,075)	(15,864)	(19,909)
Crude oil transportation and services [Member]
Revenues	(7,289)	(6,416)	(19,322)	(19,642)
Other Segments [Member]
Revenues	(444)	(1,084)	(1,387)	(2,761)
Intersegment [Member] \| Intrastate Transportation And Storage [Member]
Revenues	(93)	(302)	(646)	(668)
Intersegment [Member] \| Investment In Sunoco LP [Member]
Revenues	(3)	(17)	(32)	(44)
Intersegment [Member] \| Investment In USAC [Member]
Revenues	(5)	(3)	(16)	(11)
Intersegment [Member] \| Interstate Transportation and Storage [Member]
Revenues	(9)	(16)	(35)	(54)
Intersegment [Member] \| Midstream [Member]
Revenues	(2,002)	(3,756)	(5,629)	(10,447)
Intersegment [Member] \| NGL and refined products transportation and services [Member]
Revenues	(891)	(906)	(2,654)	(3,265)
Intersegment [Member] \| Crude oil transportation and services [Member]
Revenues	0	(1)	(1)	(2)
Intersegment [Member] \| Other Segments [Member]
Revenues	(109)	(211)	(378)	(480)
External Customers [Member] \| Intrastate Transportation And Storage [Member]
Revenues	(880)	(2,081)	(2,424)	(5,550)
External Customers [Member] \| Investment In Sunoco LP [Member]
Revenues	(6,317)	(6,577)	(17,395)	(19,767)
External Customers [Member] \| Investment In USAC [Member]
Revenues	(212)	(176)	(605)	(503)
External Customers [Member] \| Interstate Transportation and Storage [Member]
Revenues	(562)	(533)	(1,720)	(1,591)
External Customers [Member] \| Midstream [Member]
Revenues	(775)	(1,115)	(2,370)	(3,399)
External Customers [Member] \| NGL and refined products transportation and services [Member]
Revenues	(4,369)	(5,169)	(13,210)	(16,644)
External Customers [Member] \| Crude oil transportation and services [Member]
Revenues	(7,289)	(6,415)	(19,321)	(19,640)
External Customers [Member] \| Other Segments [Member]
Revenues	$ (335)	$ (873)	$ (1,009)	$ (2,281)