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
	Mar. 31, 2013	Mar. 31, 2012
Foreign Currency Cash Flow Derivatives and Hedging Activities [Abstract]
Amounts deferred to Accumulated Other Comprehensive Loss	$ (4)	$ 8
Amount of deferred (gain) loss reclassified from AOCL into CGS	$ 0	$ (1)