Income Taxes (Deferred Income Tax) (Details) - USD ($) $ in Millions	Jan. 01, 2017	Jan. 03, 2016
Long-term:
Accrued liabilities	$ 36.4	$ 31.3
Inventory valuation	17.7	17.3
Accrued vacation	10.7	10.5
Deferred compensation and other benefit plans	24.5	16.8
Postretirement benefits other than pensions	4.6	4.8
Tax credit and net operating loss carryforward	47.7	49.1
Valuation allowance	(16.9)	(18.8)
Total deferred income tax assets	124.7	111.0
Long-term:
Property, plant and equipment differences	30.6	26.5
Intangible amortization	110.7	111.6
Other	4.8	3.3
Total deferred income tax liabilities	146.1	141.4
Net deferred income tax liabilities	$ 21.4	$ 30.4