Other Expense (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Other Income and Expenses [Abstract]
Restructuring expense	$ 39.5	$ 0
Program termination agreement	0	11.3
Retirement related obligations	0	5.9
Other income	(0.7)	(0.3)
Other expense	$ 38.8	$ 16.9