Income Taxes (Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 29, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 30, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Current
Federal									$ 66.0	$ 22.9	$ 54.0
State									10.6	8.1	6.4
Foreign									28.4	31.8	22.8
Total current									105.0	62.8	83.2
Deferred
Federal									(37.0)	2.3	(10.7)
State									(2.3)	0.6	(3.6)
Foreign									5.7	(5.6)	(9.1)
Total deferred									(33.6)	(2.7)	(23.4)
Provision for income taxes	$ 13.8	$ 16.7	$ 23.3	$ 17.6	$ 16.0	$ 9.9	$ 18.5	$ 15.7	$ 71.4	$ 60.1	$ 59.8