Derivative Financial Instruments (Location and Fair Value of All Derivative 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
Derivative fair value
Loss (gain) on foreign exchange	$ 24.2	$ 21.3	$ (30.0)	$ 20.0
Foreign Exchange Contract [Member]
Derivative fair value
Loss (gain) on foreign exchange		1.2	(1.8)
Common Stock Purchase Warrant Derivative [Member]
Derivative fair value
Change in fair value of common stock purchase warrants		$ 0	$ 1.8