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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

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+ References

No definition available.

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
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Goodwill (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Goodwill (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Mar. 18, 2019	Dec. 31, 2017
Goodwill [Line Items]
Goodwill		$ 188	$ 0		$ 47
Utica East Ohio Midstream, LLC Acquisition [Member]
Goodwill [Line Items]
Goodwill				$ 188
Goodwill, Period Increase (Decrease)		188
Jackalope Gas Gathering Services LLC [Member]
Goodwill [Line Items]
Goodwill, Period Increase (Decrease)			(47)
West [Member]
Goodwill [Line Items]
Goodwill		0	0		47
West [Member] \| Jackalope Gas Gathering Services LLC [Member]
Goodwill [Line Items]
Goodwill, Period Increase (Decrease)	$ 47		(47)
Northeast G And P [Member]
Goodwill [Line Items]
Goodwill		188	$ 0		$ 0
Northeast G And P [Member] \| Utica East Ohio Midstream, LLC Acquisition [Member]
Goodwill [Line Items]
Goodwill, Period Increase (Decrease)		$ 188