Income Taxes - Provision for (Benefit from) Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 27, 2019	Dec. 28, 2018	Dec. 29, 2017
Current:
U.S. federal income tax	$ 2.1	$ (0.4)	$ 8.4
State	1.9	0.1	1.5
Non-U.S.	12.2	12.8	13.4
Total	16.2	12.5	23.3
Deferred:
U.S. federal income tax	3.0	2.1	2.1
State	1.1	1.3	0.5
Non-U.S.	1.1	0.2	(1.0)
Total	5.2	3.6	1.6
Provision for income taxes	$ 21.4	$ 16.1	$ 24.9