Reconciliation of Realized and Net Change in Unrealized Gains (Losses) to Other Income - Net Gains from Fund Investment Activities in Condensed Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Gain (Loss) on Investments [Line Items]
Realized Gains	$ 13,382	$ 67,039
Net Change in Unrealized Gains (Losses)	(25,241)	3,933
Realized and Net Change in Unrealized Gains (Losses) from Consolidated Blackstone Funds	(11,859)	70,972
Interest and Dividend Revenue Attributable to Consolidated Blackstone Funds	31,001	22,583
Other Income - Net Gains from Fund Investment Activities	$ 19,142	$ 93,555