Segments, Concentrations and Geographic Information - Net Sales to Third Parties by Geographic Region (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 498.1	$ 488.6	$ 1,009.8	$ 960.7
North America (primarily U.S.) [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	280.8	255.5	572.1	502.5
Europe Excluding Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	93.2	90.3	186.6	175.2
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	55.1	50.5	111.5	101.5
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	39.3	64.0	81.2	128.1
Asia and Other Excluding China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 29.7	$ 28.3	$ 58.4	$ 53.4