Leases - Supplemental Balance Sheet (Details) - USD ($) $ in Millions	Mar. 29, 2020	Dec. 29, 2019
Operating Leases:
Operating lease right-of-use assets	$ 39.8	$ 42.1
Current portion of operating lease liabilities	8.7	9.9
Operating lease liabilities, net of current portion	36.0	37.6
Finance leases:
Property, plant and equipment, net	37.9	38.1
Other current liabilities	0.7	0.6
Other long-term liabilities	$ 38.6	$ 38.4