Business Segment, Geographic Area, 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, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	$ 741.9	$ 589.8	$ 2,185.7	$ 1,669.8
Long-lived assets	539.0		539.0		$ 503.9
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	348.4	281.2	922.7	757.7
South Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	90.6	65.8	292.6	206.8
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	80.4	67.6	263.5	192.5
Taiwan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	44.1	27.8	164.8	73.3
Other Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	74.0	59.4	228.4	175.3
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	46.9	39.9	141.2	117.1
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	57.5	$ 48.1	172.5	$ 147.1
Long-lived assets	34.5		34.5		45.1
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	402.4		402.4		364.0
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 102.1		$ 102.1		$ 94.8