Financing Arrangements and Derivative Financial Instruments Financing Arrangements and Derivative Financial Instruments (Derivatives - Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Notional Amount of Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	$ 1,386		$ 1,386		$ 1,289
(Gain) Loss on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	13	(21)	(7)	3
Notional Amount of Foreign Currency Cash Flow Hedge Derivatives	162		162		138
Foreign Currency Cash Flow Hedge (Gain) Loss to be Reclassified During Next 12 Months	$ (3)		$ (3)