Supplemental Balance Sheet Information (Property, Plant and Equipment) (Details) - USD ($) $ in Millions	Jan. 01, 2017	Jan. 03, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 809.3	$ 776.1
Accumulated depreciation and amortization	(468.5)	(454.8)
Total property, plant and equipment, net	340.8	321.3
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	37.5	32.9
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	204.3	182.0
Equipment and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 567.5	$ 561.2