Financing Arrangements and Derivative Financial Instruments Financing Arrangements and Derivative Financial Instruments (Schedule of Cash Flow Foreign Exchange Contracts) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Foreign Currency Cash Flow Derivatives and Hedging Activities [Abstract]
Amounts deferred to Accumulated Other Comprehensive Loss	$ (4)	$ 14	$ (2)	$ 0
Amount of deferred (gain) loss reclassified from AOCL into CGS	6	(7)	10	(9)
Amounts excluded from effectiveness testing	$ 1	$ (2)	$ 1	$ (2)