Segment and Geographic Area Information - Long-Lived Assets by Geographic Region (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues From External Customers And Long Lived Assets [Line Items]
Consolidated long-lived assets	$ 874.4	$ 955.8	$ 993.9
U.S.
Revenues From External Customers And Long Lived Assets [Line Items]
Consolidated long-lived assets	621.9	642.0	720.1
Asia
Revenues From External Customers And Long Lived Assets [Line Items]
Consolidated long-lived assets	113.8	127.6	102.6
Europe
Revenues From External Customers And Long Lived Assets [Line Items]
Consolidated long-lived assets	75.5	81.0	65.3
Other
Revenues From External Customers And Long Lived Assets [Line Items]
Consolidated long-lived assets	$ 63.2	$ 105.2	$ 105.9