Business Acquisitions and Dispositions - Schedule of Discontinued Operations (Details) - USD ($) $ in Millions		10 Months Ended	12 Months Ended
		Nov. 06, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax expense					$ 33
Accretion			$ 47	$ 51
Accrued capital expenditures			834	801	888
EEGH
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net income from discontinued operations	[1]		0	0	141
Accretion			1	4
Accrued capital expenditures			$ 42	$ 30	$ 25
EEGH | East Ohio | Disposed of by Means Other than Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Operating revenue		$ 594
Depreciation and amortization		73
Other operating expenses		399
Other income (expense), net		28
Income tax expense		26
Net income from discontinued operations		124
Capital expenditures		299
Accretion		20
Accrued capital expenditures		2
EEGH | Eastern Gathering and Processing, Inc. | Disposed of by Means Other than Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Operating revenue		125
Depreciation and amortization		4
Other operating expenses		97
Income tax expense		7
Net income from discontinued operations		17
Capital expenditures		$ 11

[1] Includes income tax expense of $33 million for the year ended December 31, 2019.