Revenues - Summary of Trade Accounts Receivable, Net (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable, net	$ 391,476	$ 401,632
Receivables, Net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable, net, current	364,625	375,136
Deferred Charges and Other Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable, net, noncurrent	$ 26,851	$ 26,496