Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2017	Oct. 02, 2016	Oct. 01, 2017	Oct. 02, 2016
Income Tax Disclosure [Abstract]
Effective income tax rate	15.60%	16.70%	19.70%	23.90%
Net discrete income tax expense	$ (9.9)	$ 6.6	$ (15.9)	$ 1.5
Effective income tax rate, excluding discrete items	27.70%	27.20%	27.70%	27.40%
Effective income tax rate reconciliation, remeasurement of uncertain tax positions	$ (7.4)		$ (7.7)
Discrete tax expense (benefit), valuation allowance	(0.4)		(8.5)
Discrete tax expense (benefit), uncertain tax positions			4.6
Discrete tax expense (benefit), share-based accounting	$ (2.3)	$ (4.0)	(5.1)	$ (5.8)
Discrete tax expense (benefit), sale of operating facility		6.7
Gain on sale of facility		$ 17.9	$ 0.0	$ 17.9