Summary of Tax Effects of Temporary Differences (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred Tax Assets
Fund Management Fees	$ 16,357	$ 21,607
Equity-Based Compensation	57,552	56,783
Unrealized Gains from Investments		(119,428)
Depreciation and Amortization	1,326,395	1,314,570
Net Operating Loss Carry Forward	15,874
Other		(21,302)
Total Deferred Tax Assets	1,416,178	1,252,230
Deferred Tax Liabilities
Unrealized Gains from Investments	105,830
Other	32,919
Depreciation and Amortization		10
Total Deferred Tax Liabilities	138,749	10
Net Deferred Tax Assets	$ 1,277,429	$ 1,252,220