Other Income (Expense), Net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Other Income (Expense), Net
Income from cash and cash investments		$ 1	$ 1	$ 2
Income from financial investments	3	5	2	15
Other items, net	3	(2)
Total other, net	6	4	3	17
Currency (losses) gains included in other items, net	$ 2	$ (2)	$ 0	$ 1