Financial Instruments Schedule of Gains and Losses of Derivative Financial Instruments Not Designated as Hedges (Details) (Currency Derivatives, Nondesignated [Member], USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Income	$ 27.8	$ (38.4)	$ 35.9	$ (18.0)
Other, net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Income	$ 27.8	$ (38.4)	$ 35.9	$ (18.0)