Financing Arrangements and Derivative Financial Instruments (Schedule of Fair Values for Foreign Currency Contracts Designated as Cash Flow Hedging 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 Cash Flow Hedge	$ 0	$ 11
Other current liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Liabilities, Foreign Currency Cash Flow Hedge	$ (5)	$ 0