Balance Sheet Details - Property, Plant and Equipment (Details) - USD ($) $ in Millions	Dec. 27, 2020	Dec. 29, 2019
Property, Plant and Equipment [Line Items]
Finance lease right of use assets	$ 40.6	$ 39.6
Property and equipment	243.1	198.6
Accumulated depreciation and amortization	(99.3)	(81.7)
Total property and equipment, net	143.8	116.9
Land and buildings
Property, Plant and Equipment [Line Items]
Property and equipment	19.1	12.2
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment	37.0	32.7
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment	105.3	78.7
Furniture and office equipment
Property, Plant and Equipment [Line Items]
Property and equipment	7.9	7.1
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment	15.0	12.3
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment	$ 18.2	$ 16.0