Income Taxes - Schedule of Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits at beginning of period	$ (395)	$ (94)
Balance acquired from Baker Hughes	(142)	(326)
Additions for tax positions of the current year	(21)	(13)
Additions for tax positions of prior years	(95)	(19)
Reductions for tax positions of prior years	101	32
Settlements with tax authorities	35	14
Lapse of statute of limitations	(45)	(11)
Unrecognized tax benefits at end of period	$ (472)	$ (395)