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
	Mar. 31, 2012	Mar. 31, 2011
Derivative Instruments, (Gain) Loss [Line Items]
Unrealized (Gain) Loss on Foreign Currency Derivatives, Net, before Tax	$ 8	$ 9
Foreign Currency Cash Flow Hedge (Gain) Loss Reclassified to Earnings, Net	(1)	0
(Gain) Loss on Components Excluded from Assessment of Foreign Currency Cash Flow Hedge Effectiveness	$ 0	$ 0