Other Financial Data - Schedule of Other Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Other (Expense) Income
Foreign currency remeasurement (loss) gain	$ 1	$ (7)	$ (16)	$ 17
Gain on disposal of business	6	1	41	20
Equity earnings	1	4	3	6
Income (loss) on financial instruments	(8)	3	(10)	0
Total	$ 0	$ 1	$ 18	$ 43