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		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	$ 749.9	$ 544.3	$ 1,443.8	$ 1,080.0
Long-lived assets	520.2		520.2		$ 503.9
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	291.5	245.0	574.3	476.5
Long-lived assets	380.5		380.5		364.0
South Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	104.1	65.0	202.0	141.0
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	101.8	75.2	183.1	124.9
Taiwan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	61.3	20.2	120.7	45.5
Other Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	84.3	57.0	154.4	115.9
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	46.3	37.2	94.3	77.2
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	60.6	$ 44.7	115.0	$ 99.0
Long-lived assets	37.5		37.5		45.1
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 102.2		$ 102.2		$ 94.8