Lease Commitments (Details) (USD $) In Millions, unless otherwise specified	Jan. 01, 2012
Future minimum lease payments for capital leases and for operating leases
2012, Capital Leases	$ 2.0
2013, Capital Leases	1.8
2014, Capital Leases	1.7
2015, Capital Leases	1.6
2016, Capital Leases	1.7
Thereafter, Capital Leases	10.2
Total minimum lease payments, Capital lease payment	19.0
2012, Operating Leases	21.3
2013, Operating Leases	19.2
2014, Operating Leases	15.9
2015, Operating Leases	13.5
2016, Operating Leases	9.7
Thereafter, Operating Leases	19.2
Total minimum lease payments, Operating lease payment	98.8
Imputed interest	(4.2)
Capital leases, current	(1.4)
Present value of minimum capital lease payments, net of current portion	$ 13.4

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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.