Reconciliation of Total Segments to Income Before Provision for Taxes and Total Assets (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Revenues		$ 932,354	$ 2,512,358
Expenses		617,710	1,142,568
Other Income		19,142	93,555
Income Before Provision for Taxes		333,786	1,463,345
Total Assets		22,050,904		$ 22,526,080
Operating Segments
Segment Reporting Information [Line Items]
Revenues		929,449	2,508,719
Expenses		542,004	876,936
Income Before Provision for Taxes		387,445	1,631,783
Total Assets		17,124,534
Consolidation Adjustments and Reconciling Items
Segment Reporting Information [Line Items]
Revenues	[1]	2,905	3,639
Expenses	[2]	75,706	265,632
Other Income	[3]	19,142	93,555
Income Before Provision for Taxes	[4]	(53,659)	$ (168,438)
Total Assets	[5]	$ 4,926,370

[1] The Revenues adjustment represents management and performance fees earned from Blackstone Funds which were eliminated in consolidation to arrive at Blackstone consolidated revenues and non-segment related Investment Income (Loss), which is included in Blackstone consolidated revenues.

[2] The Expenses adjustment represents the addition of expenses of the consolidated Blackstone Funds to the Blackstone unconsolidated expenses, amortization of intangibles and expenses related to transaction-related equity-based compensation to arrive at Blackstone consolidated expenses.

[3] The Other Income adjustment results from the following:

[4] The reconciliation of Economic Income to Income Before Provision for Taxes as reported in the Condensed Consolidated Statements of Operations consists of the following:

[5] The Total Assets adjustment represents the addition of assets of the consolidated Blackstone Funds to the Blackstone unconsolidated assets to arrive at Blackstone consolidated assets.