Leases - Cash Paid (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Leases [Abstract]
Finance lease - cash paid for interest	$ 0.6	$ 0.6
Finance lease - financing cash flows	0.1	0.1
Operating lease - operating cash flows (fixed payments)	$ 4.1	$ 3.3