Income Taxes (Details 2) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Components of Profit before income taxes
U.S.									$ 213	$ 285	$ 249
Non-U.S.									220	305	312
Profit before income taxes	$ 46	$ 163	$ 100	$ 124	$ 133	$ 126	$ 164	$ 167	433	590	561
Current income tax provision (benefit)
U.S.									(46)	157	(18)
Non-U.S.									112	102	111
State (U.S.)									1	1	0
Current income tax provision (benefit)									67	260	93
Deferred income tax provision (benefit)
U.S.									67	(239)	90
Non-U.S.									(26)	(28)	(15)
State (U.S.)									0	3	3
Deferred income tax provision (benefit)									41	(264)	78
Total Provision (benefit) for income taxes									$ 108	$ (4)	$ 171