Other Income (Expense) - Net - Computation of Other Income (Expense) - Net (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Other Income and Expenses [Abstract]
Interest income	$ 0.4	$ 0.4
Net foreign exchange loss	(1.9)	(1.5)
Net periodic pension and postretirement benefits – non-service	3.0	2.2
Other	0.0	0.4
Total other income (expense) – net	$ 1.5	$ 1.5