Derivative Financial Instruments (Location and Fair Value of All Derivative Instruments) (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
Derivative fair value
Loss (gain) on foreign exchange	$ 34.8	$ 7.9	$ 54.2	$ 1.3
Foreign Exchange Contract [Member]
Derivative fair value
Loss (gain) on foreign exchange		(4.4)	(3.0)
Common Stock Purchase Warrant Derivative [Member]
Derivative fair value
Change in fair value of common stock purchase warrants		$ 1.9	$ 1.8