Description of Company and Summary of Significant Accounting Policies - Factoring Arrangements (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Accounting Policies [Abstract]
Proceeds from sales of accounts receivables			$ 62.7	$ 57.4
Factoring costs	$ 0.1	$ 0.1	$ 0.2	$ 0.4