Financing Arrangements and Derivative Financial Instruments (Derivative Financial Instruments - Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Financing Arrangements and Derivative Financial Instruments [Abstract]
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	$ 5
Notional Amount of Foreign Currency Cash Flow Hedge Derivatives	138	171
Notional Amount of Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	1,289	1,056
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	$ (32)	$ 30