Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Disclosure Income Taxes Additional Information [Abstract]
Income taxes on continuing operations	$ 59.2	$ 56.6	$ 135.5	$ 139.3
Document Period End Date			Sep. 28, 2019
Effective tax rate	20.10%	18.60%	15.20%	16.40%
Business Combination, Acquisition Related Costs	21.50%	19.50%	16.10%	15.60%