Other Financial Data - Schedule of Other Income (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Other (Expense) Income
Foreign currency remeasurement gain (loss)	$ (20,000,000)	$ 3,000,000	$ (32,000,000)	$ (14,000,000)
Gain (loss) on disposal of business	0	0	(2,000,000)	41,000,000
Equity earnings	2,000,000	4,000,000	11,000,000	7,000,000
Gain (loss) on financial instruments	16,000,000	3,000,000	6,000,000	(7,000,000)
Other	(3,000,000)	0	(3,000,000)	0
Total	$ (5,000,000)	$ 10,000,000	$ (20,000,000)	$ 27,000,000