Derivative Instruments and Hedging Activities (Details 3) - Not designated as a hedge - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivative instruments and hedging activities
Total (loss) gain	$ (5)	$ 1	$ (7)	$ (5)
Foreign currency exchange contracts | Other, net
Derivative instruments and hedging activities
Total (loss) gain	(1)	(1)	3	(3)
Foreign currency forward contracts | Other, net
Derivative instruments and hedging activities
Total (loss) gain			(4)	(1)
Metal contracts | Cost of sales
Derivative instruments and hedging activities
Total (loss) gain	(3)	3	(5)
Interest Rate Swaps
Derivative instruments and hedging activities
Total (loss) gain	$ (1)	$ (1)	$ (1)	$ (1)