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		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Derivative Instruments, (Gain) Loss [Line Items]
Amounts deferred to Accumulated Other Comprehensive Loss (AOCL)	$ (10)	$ 5	$ (2)	$ 14
Amount of deferred (gain) loss reclassified from AOCL into CGS	(3)	2	(4)	2
Amounts excluded from effectiveness testing	$ 0	$ 0	$ 0	$ 0