Allowance for Doubtful Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 3.3	$ 2.1	$ 2.0
Provision for credit losses	1.8	2.2	0.6
Less net charge-offs	(0.9)	(1.0)	(0.5)
Balance at end of period	$ 4.2	$ 3.3	$ 2.1