Other Income (Expense), Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Other Income and Expenses [Abstract]
Income from cash and cash investments	$ 1	$ 1	$ 3	$ 2
Income from financial investments, net	1	1	4	7
Foreign currency transaction losses	(3)	(8)	(1)	(13)
Other items, net	2	0	(1)	2
Total other, net	$ 1	$ (6)	$ 5	$ (2)