Reportable Segments - Summary of Segment Data (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 24, 2021	Sep. 30, 2022	Sep. 24, 2021	Dec. 31, 2021
Revenues:
Revenues	$ 635.0	$ 553.7	$ 1,807.9	$ 1,486.5
Gross profit:
Total segment gross profit	124.4	114.1	356.6	300.9
Operating profit:
Income (loss) from operations	36.3	50.6	76.6	122.9
ASSETS
Total segment assets	1,956.0		1,956.0		$ 2,025.4
Products [Member]
Revenues:
Revenues	556.3	482.0	1,575.2	1,270.1
Gross profit:
Total segment gross profit	97.0	88.6	275.3	225.2
Operating profit:
Income (loss) from operations	26.8	43.8	50.1	102.0
ASSETS
Total segment assets	1,661.0		1,661.0		1,757.6
Service [Member]
Revenues:
Revenues	78.7	71.7	232.7	216.4
Gross profit:
Total segment gross profit	27.4	25.5	81.3	75.7
Operating profit:
Income (loss) from operations	9.5	$ 6.8	26.5	$ 20.9
ASSETS
Total segment assets	$ 295.0		$ 295.0		$ 267.8