Reportable Segments Table - Revenues (External and Intersegment) by Investments (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Revenues	$ (19,954)	$ (20,772)	$ (60,216)	$ (63,130)
Intersegment Eliminations [Member]
Revenues	(3,612)	(2,771)	(11,378)	(8,600)
Intrastate Transportation And Storage [Member] \| Operating Segments [Member]
Revenues	(869)	(678)	(3,094)	(2,233)
Intrastate Transportation And Storage [Member] \| Operating Segments [Member] \| External Customers [Member]
Revenues	(773)	(622)	(2,739)	(2,010)
Intrastate Transportation And Storage [Member] \| Operating Segments [Member] \| Intersegment [Member]
Revenues	(96)	(56)	(355)	(223)
Investment In Sunoco LP [Member] \| Operating Segments [Member]
Revenues	(6,032)	(5,751)	(16,601)	(17,424)
Investment In Sunoco LP [Member] \| Operating Segments [Member] \| External Customers [Member]
Revenues	(6,023)	(5,738)	(16,586)	(17,406)
Investment In Sunoco LP [Member] \| Operating Segments [Member] \| Intersegment [Member]
Revenues	(9)	(13)	(15)	(18)
Investment In USAC [Member] \| Operating Segments [Member]
Revenues	(251)	(240)	(746)	(705)
Investment In USAC [Member] \| Operating Segments [Member] \| External Customers [Member]
Revenues	(234)	(227)	(698)	(680)
Investment In USAC [Member] \| Operating Segments [Member] \| Intersegment [Member]
Revenues	(17)	(13)	(48)	(25)
Interstate Transportation and Storage [Member] \| Operating Segments [Member]
Revenues	(603)	(575)	(1,814)	(1,696)
Interstate Transportation and Storage [Member] \| Operating Segments [Member] \| External Customers [Member]
Revenues	(595)	(568)	(1,792)	(1,676)
Interstate Transportation and Storage [Member] \| Operating Segments [Member] \| Intersegment [Member]
Revenues	(8)	(7)	(22)	(20)
Midstream [Member] \| Operating Segments [Member]
Revenues	(2,992)	(2,758)	(9,783)	(8,039)
Midstream [Member] \| Operating Segments [Member] \| External Customers [Member]
Revenues	(819)	(1,064)	(2,560)	(2,646)
Midstream [Member] \| Operating Segments [Member] \| Intersegment [Member]
Revenues	(2,173)	(1,694)	(7,223)	(5,393)
NGL and refined products transportation and services [Member] \| Operating Segments [Member]
Revenues	(5,853)	(5,853)	(18,703)	(18,174)
NGL and refined products transportation and services [Member] \| Operating Segments [Member] \| External Customers [Member]
Revenues	(4,919)	(5,017)	(15,982)	(15,598)
NGL and refined products transportation and services [Member] \| Operating Segments [Member] \| Intersegment [Member]
Revenues	(934)	(836)	(2,721)	(2,576)
Crude oil transportation and services [Member] \| Operating Segments [Member]
Revenues	(6,043)	(7,309)	(17,999)	(22,319)
Crude oil transportation and services [Member] \| Operating Segments [Member] \| External Customers [Member]
Revenues	(6,043)	(7,294)	(17,996)	(22,294)
Crude oil transportation and services [Member] \| Operating Segments [Member] \| Intersegment [Member]
Revenues	0	(15)	(3)	(25)
Other Segments [Member] \| Operating Segments [Member]
Revenues	(923)	(379)	(2,854)	(1,140)
Other Segments [Member] \| Operating Segments [Member] \| External Customers [Member]
Revenues	(548)	(242)	(1,863)	(820)
Other Segments [Member] \| Operating Segments [Member] \| Intersegment [Member]
Revenues	$ (375)	$ (137)	$ (991)	$ (320)