Property and Equipment, Net - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 155.0	$ 155.2	$ 191.5
Accelerated depreciation related to the disposal of the lifting floors			33.7
Operating Expense [Member]
Property, Plant and Equipment [Line Items]
Fixed Asset Disposals	$ 10.9
Impairment loss of long-lived assets		$ 7.8
Project asset write-offs			$ 6.4