Reportable Segments - Summary of Segment Data (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jun. 25, 2021	Jul. 01, 2022	Jun. 25, 2021	Dec. 31, 2021
Revenues:
Revenues	$ 608.7	$ 515.2	$ 1,172.9	$ 932.8
Gross profit:
Total segment gross profit	118.4	99.9	232.2	186.8
Operating profit:
Income (loss) from operations	(5.5)	31.9	40.3	72.3
ASSETS
Total segment assets	1,945.4		1,945.4		$ 2,025.4
Products [Member]
Revenues:
Revenues	532.0	442.5	1,018.9	788.1
Gross profit:
Total segment gross profit	90.9	74.6	178.3	136.6
Operating profit:
Income (loss) from operations	(14.4)	24.0	23.3	58.2
ASSETS
Total segment assets	1,672.3		1,672.3		1,757.6
Service [Member]
Revenues:
Revenues	76.7	72.7	154.0	144.7
Gross profit:
Total segment gross profit	27.5	25.3	53.9	50.2
Operating profit:
Income (loss) from operations	8.9	$ 7.9	17.0	$ 14.1
ASSETS
Total segment assets	$ 273.1		$ 273.1		$ 267.8