Business Segment, Geographic Area, Product/Service Offerings and Significant Customer Information - Schedule of Net Revenues and Long-Lived Assets by Geographic Regions (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	$ 589.8	$ 462.5	$ 1,669.8	$ 1,400.1
Long-lived assets	479.1		479.1		$ 339.3
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	281.2	211.1	757.7	653.0
Long-lived assets	353.1		353.1		208.3
South Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	65.8	41.3	206.8	116.0
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	67.6	46.7	192.5	140.5
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	39.9	32.4	117.1	105.5
Israel [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	34.3	26.4	98.3	76.6
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	29.4	36.4	94.3	111.9
Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	71.6	$ 68.2	203.1	$ 196.6
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	37.3		37.3		41.4
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 88.7		$ 88.7		$ 89.6