Revenue Recognition - Contract Liabilities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 28, 2021	Mar. 29, 2020	Dec. 31, 2020	Dec. 31, 2019
Contract with Customer, Asset
Contract Assets		$ 0.3		$ 0.4
Change in period		(0.1)
Contract Liabilities
Contract Liabilities - Current	$ 14.5	11.7	$ 13.5	11.5
Increase (decrease) - Current Liabilities	1.0	0.2
Contract Liabilities - Noncurrent	2.3	2.8	$ 2.5	$ 2.9
Increase (decrease) - Noncurrent Liabilities	(0.2)	(0.1)
Revenue recognized, contract liability	3.7	2.3
Impairment loss related to Contract Assets	$ 0.0	$ 0.0