Leases - Net Rental Expense (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Leases [Abstract]
Noncancelable, Minimum rental expense	$ 71.5	$ 115.2	$ 102.1
Noncancelable, Contingent rental expense	2.1	2.3	2.4
Noncancelable, Sublease rental expense	(0.9)	(0.9)	(0.9)
Operating Leases, Rent Expense	57.7	77.9	74.6
Net rental expense	$ 130.4	$ 194.5	$ 178.2