Revenue from Contracts with Customers - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
Other Revenues [Line Items]
Stockholder's equity attributable to noncontrolling interest	$ 16,056		$ 16,056			$ 15,467
Expiration of stock rotation right			180 days
Net sales	1,726,540	$ 1,664,170	$ 3,304,250	$ 3,147,276
Unbilled receivables	37,169		37,169
Revenue, remaining performance obligation amount	$ 64,800		$ 64,800
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year		1 year
Difference between Revenue Guidance in Effect before and after Topic 606
Other Revenues [Line Items]
Net sales	$ 12,000		$ 28,500
Accounting Standards Update 2014-09
Other Revenues [Line Items]
Cumulative effect on opening retained accumulated deficit					$ 1,800
Stockholder's equity attributable to noncontrolling interest					$ 2,700