Financing Arrangements and Derivative Financial Instruments Financing Arrangements and Derivative Financial Instruments (Schedule of Classification of Changes in Fair Values of Foreign Currency Contracts) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Foreign Currency Cash Flow Derivatives and Hedging Activities [Abstract]
Amounts deferred to Accumulated Other Comprehensive Loss	$ (3)	$ (10)	$ (7)	$ (2)
Amount of deferred (gain) loss reclassified from AOCL into CGS	$ 2	$ (3)	$ 2	$ (4)