Operations And Basis of Presentation Schedule of Goodwill (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Goodwill	$ 3,807	$ 5,132	[1]
Goodwill, Impairment Loss	(1,325)
Intrastate transportation and storage
Segment Reporting Information [Line Items]
Goodwill	10	10
Goodwill, Impairment Loss	0
Interstate transportation and storage
Segment Reporting Information [Line Items]
Goodwill	43	226
Goodwill, Impairment Loss	(183)
Midstream
Segment Reporting Information [Line Items]
Goodwill	0	483
Goodwill, Impairment Loss	(483)
NGL and refined products transportation and services
Segment Reporting Information [Line Items]
Goodwill	693	693
Goodwill, Impairment Loss	0
Crude oil transportation and services
Segment Reporting Information [Line Items]
Goodwill	1,397	1,397
Goodwill, Impairment Loss	0
Investment In Sunoco LP [Member]
Segment Reporting Information [Line Items]
Goodwill	1,555	1,555
Goodwill, Impairment Loss	0
Investment In USAC [Member]
Segment Reporting Information [Line Items]
Goodwill	0	619
Goodwill, Impairment Loss	(619)
All other
Segment Reporting Information [Line Items]
Goodwill	109	$ 149
Goodwill, Impairment Loss	$ (40)

[1] *As adjusted. See Note 1.