Other Assets and Other Liabilities - Schedule of Other Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Current income and other tax receivables	$ 35,439	$ 38,804
Prepaid compensation (see Note 15)	76,362	60,355
Other advances and prepayments	66,266	56,595
Other	80,567	72,390
Total	$ 258,634	$ 228,144