Condensed Consolidated Stockholders' Equity Statement (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2016	Jun. 28, 2015	Jul. 03, 2016	Jun. 28, 2015
Statement of Stockholders' Equity [Abstract]
Foreign currency translation, tax expense (benefit)	$ 0.3	$ (0.4)	$ (1.9)	$ 2.1
Adjustments to pension and postretirement liability, tax expense	$ 0.3	$ 0.5	$ 0.6	$ 1.1
Dividends declared per share	$ 0.05	$ 0.05	$ 0.10	$ 0.10