Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2017	Jul. 03, 2016	Jul. 02, 2017	Jul. 03, 2016
Income Taxes [Abstract]
Amount of unrecognized tax benefits	$ 14.3		$ 14.3
Unrecognized tax benefits that would impact effective tax rate	9.7		9.7
Unrecognized tax benefits, net reversal of accrued interest and penalties	0.2		0.3
Unrecognized tax benefits, accrued interest and penalties	1.5		1.5
Provision for taxes on income	$ 13.4	$ 4.5	$ 23.5	$ 15.2
Effective income tax rate	22.90%		21.30%