Condensed Consolidated Stockholders' Equity Statement (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 02, 2016	Sep. 27, 2015	Oct. 02, 2016	Sep. 27, 2015
Statement of Stockholders' Equity [Abstract]
Foreign currency translation, tax expense (benefit)	$ 0.4	$ 2.1	$ 1.5	$ 0.0
Adjustments to pension and postretirement liability, tax expense	$ 3.1	$ 0.5	$ 3.7	$ 1.6
Dividends declared per share (in usd per share)	$ 0.05	$ 0.05	$ 0.15	$ 0.15