Income Taxes (Provision for Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Current
Federal	$ 36.9	$ 23.1	$ 13.5
State	(0.3)	3.5	0.2
Foreign	32.2	30.4	45.1
Total	68.8	57.0	58.8
Deferred
Federal	(7.2)	5.6	(2.0)
State	2.2	1.8	(0.9)
Foreign	(4.7)	(7.3)	(7.5)
Total	(9.7)	0.1	(10.4)
Total	$ 59.1	$ 57.1	$ 48.4