Lease Commitments (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Future minimum lease payments from continuing operations
Noncancelable Operating Leases, 2012	$ 50.4
Capital Leases, 2012	2.1
Noncancelable Operating Leases, 2013	41.4
Capital Leases, 2013	1.9
Noncancelable Operating Leases, 2014	29.9
Capital Leases, 2014	3.0
Noncancelable Operating Leases, 2015	22.9
Capital Leases, 2015	2.9
Noncancelable Operating Leases, 2016	19.2
Capital Leases, 2016	2.9
Noncancelable operating leases, Thereafter	55.1
Capital leases, Thereafter	20.4
Total minimum payments, Noncancelable operating leases	218.9
Total minimum payments, Capital leases	33.2
Amounts representing interest	(9.5)
Present value of net minimum lease payments	23.7
Current portion of capital lease obligations	(1.6)
Capital lease obligations	22.1	13.2
Lease Commitments (Textual) [Abstract]
Net rent expense from continuing operation	$ 57.6	$ 49.5	$ 46.2

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid within one year (or one operating cycle, if longer) of the balance sheet date.

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

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Contractually required rental payments on leases meeting the criteria for capitalization, due within one year of the balance sheet date.

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Contractually required rental payments on leases meeting the criteria for capitalization, due within the third year from the balance sheet date.

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Contractually required rental payments on leases meeting the criteria for capitalization, due within the second year from the balance sheet date.

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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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The discounted value of future cash flows under leases meeting the criteria for capitalization.

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The total of future contractually required payments on leases defined as operating.

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Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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