Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2017	Apr. 03, 2016
Income Tax Disclosure [Abstract]
Effective income tax rate	24.90%	27.60%
Net discrete income tax expense	$ 1.4	$ 0.6
Additional income tax benefit related to adoption of ASU 2016-09	$ 1.6	$ 0.6
Effective income tax rate, excluding discrete items	28.30%	28.80%