Financing Arrangements and Derivative Financial Instruments 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	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Accounts Receivable [Member]	Dec. 31, 2012 Accounts Receivable [Member]	Sep. 30, 2013 Other Current Liabilities	Dec. 31, 2012 Other Current Liabilities	Sep. 30, 2013 Not Designated as Hedging Instrument [Member]	Dec. 31, 2012 Not Designated as Hedging Instrument [Member]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net [Abstract]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value					$ 8	$ 2
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value							(24)	(24)
Notional Amount of Foreign Currency Cash Flow Hedge Derivatives									1,491	1,289
(Gain) Loss on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	$ 28	$ 1	$ 21	$ 4