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