INCOME TAXES (Deferred tax assets and liabilities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Jan. 01, 2011
Deferred tax assets:
Accrued expenses and reserves	$ 9.1	$ 7.4
Compensation and employee benefits	33.3	29.6
Other items	11.7	11.5
Valuation allowance on state deferred tax	(3.6)	(3.4)
Total deferred tax assets	50.5	45.1
Deferred tax liabilities:
Accelerated depreciation on fixed assets	12.6	11.4
Amortization of intangibles	27.4	26.4
Other items	14.0	12.0
Total deferred tax liabilities	54.0	49.8
Net deferred tax liabilities	(3.5)	(4.7)
Deferred Tax Assets, Gross
Deferred Tax Assets, Gross, Current	14.9	17.2
Deferred Tax Assets, Gross, Noncurrent	35.6	27.9
Total deferred tax assets	50.5	45.1
Deferred Tax Liabilities, Gross, Classification
Deferred Tax Liabilities, Gross, Current	3.1	4.0
Deferred Tax Liabilities, Gross, Noncurrent	50.9	45.8
Total deferred tax liabilities	$ 54.0	$ 49.8