Schedule of Other Income (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Other (Expense) Income
Equity earnings	$ 4	$ 6	$ 10	$ 12
Gain on investments	4	37	2	36
Foreign currency remeasurement gain (loss)	7	(4)	11	15
Derivative (loss) gain	(6)	1	(19)	(8)
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	25	0	25	0
Other	1	(1)	5	(1)
Other Income	$ 35	$ 39	$ 34	$ 54