Income Taxes - Provisions for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Current expense:
Federal	$ 16.0	$ 48.9	$ 42.1
State	1.4	5.2	5.6
Foreign	11.3	11.6	18.0
Deferred expense (credit):
Federal	(6.9)	(22.0)	(9.3)
State	(0.3)	(1.9)	(6.6)
Foreign	1.5	(0.4)	(2.2)
Total provision for income taxes	$ 23.0	$ 41.4	$ 47.6