Financing Arrangements and Derivative Financial Instruments (Schedule of Fair Values for Foreign Currency Contracts Not Designated as Heding Instruments) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Accounts receivable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets, Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	$ 2	$ 26
Other current liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Liabilities, Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	(24)	(5)
Other long term liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Liabilities, Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	$ 0	$ (1)