Income Taxes - Provision for (Benefit from) Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 29, 2017	Dec. 30, 2016	Jan. 01, 2016
Current:
U.S. federal income tax	$ 8.4	$ 7.6	$ 4.7
State	1.5	1.4	0.5
Non-U.S.	13.4	11.0	7.6
Current Income Tax Expense (Benefit), Total	23.3	20.0	12.8
Deferred:
U.S. federal income tax	2.1	(3.3)	1.6
State	0.5	(0.6)	0.3
Non-U.S.	(1.0)	(4.3)	(1.0)
Deferred Income Tax Expense (Benefit), Total	1.6	(8.2)	0.9
Provision for income taxes	$ 24.9	$ 11.8	$ 13.7