Financing Arrangements and Derivative Financial Instruments 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	Jun. 30, 2013	Dec. 31, 2012
Accounts Receivable [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Cash Flow Hedge Asset at Fair Value	$ 5	$ 0
Other current liabilities [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Cash Flow Hedge Liability at Fair Value	$ (1)	$ (5)