Divestiture, Decommissioning and Restructuring Activities (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Severance Costs	$ 12
Gain (loss) on disposition of assets, net	(9)	$ 4
Accounts payable - Due to affiliates	181		$ 183
Divestiture related liabilities	128
Accelerated depreciation	23	$ 0
Employee severance
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Divestiture related liabilities	26		27
Pressure pumping assets
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Severance Costs	1
Reduction of gain recorded	10
Impairment of inventory and other property and other equipment	15
Sand mine
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of inventory and other property and other equipment	16
Accelerated depreciation	23
ProPetro | Sale of Productive Assets [Member] | Pressure pumping assets
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds, before normal closing adjustments	$ 110		$ 282