Segment and Geographic Area Information - Long-Lived Assets by Geographic Region (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues From External Customers And Long Lived Assets [Line Items]
Consolidated long-lived assets	$ 1,019.8	$ 874.4	$ 955.8
U.S.
Revenues From External Customers And Long Lived Assets [Line Items]
Consolidated long-lived assets	747.5	621.9	642.0
Asia
Revenues From External Customers And Long Lived Assets [Line Items]
Consolidated long-lived assets	138.9	113.8	127.6
Europe
Revenues From External Customers And Long Lived Assets [Line Items]
Consolidated long-lived assets	57.4	75.5	81.0
Other
Revenues From External Customers And Long Lived Assets [Line Items]
Consolidated long-lived assets	$ 76.0	$ 63.2	$ 105.2