Property and Equipment - Additional Information (Detail) - USD ($)	1 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Depreciation expenses of continuing operations including amortization of asset under capital lease obligation		$ 110,400,000	$ 108,100,000	$ 112,200,000
Property tax abatement, period	8 years
Amounts in Industrial revenue bond exchanged for property tax abatement	$ 650,000,000
Cash exchanged for property tax abatement	$ 0
Industrial revenue bonds maturity period	9 years