Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011
Minimum commitments under all non-cancelable leases outstanding
2012, Operating Leases	$ 50.5
2012, Capital leases	1.2
2013, Operating leases	39.0
2013, Capital leases	1.0
2014, Operating leases	26.3
2014, Capital leases	0.9
2015, Operating leases	18.2
2015, Capital leases	0.8
2016, Operating leases	12.9
2016, Capital Leases	0
Thereafter, Operating leases	22.3
Thereafter, Capital leases	14.6
Total minimum lease payments, Operating leases	169.2
Total minimum lease payments, Capital leases	18.5
Less amount representing interest	1.1
Present value of minimum payments	$ 17.4

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The total of contractually required rental payments on leases meeting the criteria for capitalization.

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Amount necessary to reduce net minimum lease payments to present value calculated at the lesser of the interest rate implicit in the lease (if known) or the entity's incremental borrowing rate (as defined) at inception of the lease.

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