Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current income tax expense (benefit):
U.S. federal	$ (4)	$ 15	$ (22)
U.S. state and local	(6)	(4)	(23)
Non-U.S.	11	20	22
Total current income tax expense (benefit)	1	31	(23)
Deferred income tax expense (benefit):
U.S. federal	10	(5)	0
U.S. state and local	1	0	0
Non-U.S.	3	12	(12)
Total deferred income tax expense (benefit)	14	7	(12)
Total income tax expense (benefit)	$ 15	$ 38	$ (35)