Operations And Organization Goodwill Impairment (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Dec. 31, 2019
Goodwill [Line Items]
Goodwill	$ 3,835	$ 5,167
Goodwill, Impairment Loss	(1,325)
Goodwill, Other Increase (Decrease)	(7)
Intrastate Transportation And Storage [Member]
Goodwill [Line Items]
Goodwill	10	10
Goodwill, Impairment Loss	0
Goodwill, Other Increase (Decrease)	0
Interstate Transportation and Storage [Member]
Goodwill [Line Items]
Goodwill	43	226
Goodwill, Impairment Loss	(183)
Goodwill, Other Increase (Decrease)	0
Midstream [Member]
Goodwill [Line Items]
Goodwill	0	483
Goodwill, Impairment Loss	(483)
Goodwill, Other Increase (Decrease)	0
NGL and refined products transportation and services [Member]
Goodwill [Line Items]
Goodwill	693	693
Goodwill, Impairment Loss	0
Goodwill, Other Increase (Decrease)	0
Crude oil transportation and services [Member]
Goodwill [Line Items]
Goodwill	1,397	1,397
Goodwill, Impairment Loss	0
Goodwill, Other Increase (Decrease)	0
Investment In Sunoco LP [Member]
Goodwill [Line Items]
Goodwill	1,555	1,555
Goodwill, Impairment Loss	0
Goodwill, Other Increase (Decrease)	0
Investment In USAC [Member]
Goodwill [Line Items]
Goodwill	0	619
Goodwill, Impairment Loss	(619)
Goodwill, Other Increase (Decrease)	0
Other Segments [Member]
Goodwill [Line Items]
Goodwill	137	$ 184
Goodwill, Impairment Loss	(40)
Goodwill, Other Increase (Decrease)	$ (7)

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease), classified as other, of an asset representing the future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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