Supplemental Balance Sheet Information (Property, Plant and Equipment) (Details) - USD ($) $ in Millions	Jan. 03, 2016	Dec. 28, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 776.1	$ 754.0
Accumulated depreciation and amortization	(454.8)	(417.5)
Total property, plant and equipment, net	321.3	336.5
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	32.9	33.7
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	182.0	175.3
Equipment and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 561.2	$ 545.0