Supplemental Balance Sheet Information (Property, Plant and Equipment) (Details) (USD $) In Millions, unless otherwise specified	Dec. 28, 2014	Dec. 29, 2013
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 754.0	$ 724.7
Accumulated depreciation and amortization	(417.5)	(367.0)
Total property, plant and equipment, net	336.5	357.7
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	33.7	34.0
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	175.3	171.0
Equipment and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 545.0	$ 519.7