Derivative Instruments and Hedging Activities (Details) (Not designated as a hedge, USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Derivative instruments and hedging activities
Total (loss) gain	$ (6)	$ 5
Foreign currency exchange contracts | Other income (expense), net
Derivative instruments and hedging activities
Total (loss) gain	(2)	7
Foreign currency forward contracts | Other income (expense), net
Derivative instruments and hedging activities
Total (loss) gain	(1)	2
Metals contracts | Cost of sales
Derivative instruments and hedging activities
Total (loss) gain	$ (3)	$ (4)