Income Taxes - Schedule of Provision (Benefit) for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Federal, current	$ 8,177	$ 3,112	$ (3,678)
Foreign, current	78,086	61,143	41,084
State and local (primarily UBT), current	4,970	5,519	(167)
Total current	91,233	69,774	37,239
Federal, deferred	(988,900)	2,766	19,934
Foreign, deferred	(3,960)	9,239	(4,520)
State and local, deferred	(107,925)	3,623	(960)
Total deferred	(1,100,785)	15,628	14,454
Total	$ (1,009,552)	$ 85,402	$ 51,693