Financing Arrangements and Derivative Financial Instruments Financing Arrangements and Derivative Financial Instruments (Derivatives - Narrative) (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 Designated as Hedging Instrument [Member]	Dec. 31, 2012 Designated as Hedging Instrument [Member]	Sep. 30, 2013 Not Designated as Hedging Instrument [Member]	Dec. 31, 2012 Not Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosure [Abstract]
(Gain) Loss on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	$ 28	$ 1	$ 21	$ 4
Notional Amount of Foreign Currency Cash Flow Hedge Derivatives					$ 156	$ 138	$ 1,491	$ 1,289