Leases Leases - Future Minimum Rental Commitments (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Leases [Abstract]
Capital Leases, Due 2014	$ 16.1
Noncancelable Operating Leases, Due 2014	61.1
Capital Leases, Due 2015	7.8
Noncancelable Operating Leases, Due 2015	58.9
Capital Leases, Due 2016	0
Noncancelable Operating Leases, Due 2016	54.7
Capital Leases, Due 2017	0
Noncancelable Operating Leases, Due 2017	53.8
Capital Leases, Due 2018	0
Noncancelable Operating Leases, Due 2018	53.9
Capital Leases, Due 2019 and thereafter	0
Noncancelable Operating Leases, Due 2019 and thereafter	1,059.1
Capital Leases, Total minimum rental commitments	23.9
Noncancelable Operating Leases, Total minimum rental commitments	1,341.5
Capital Leases: Less amounts representing interest	(1.7)
Capital Leases, Present value of net minimum lease payments	$ 22.2