Condensed Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues
Management and Advisory Fees, Net	$ 482,133	$ 471,676
Performance Fees
Performance Fees Realized - Carried Interest	294,170	13,560
Performance Fees Realized - Incentive Fees	23,741	5,279
Performance Fees Unrealized - Carried Interest	177,347	298,796
Performance Fees Unrealized - Incentive Fees	105,798	67,135
Total Performance Fees	601,056	384,770
Investment Income
Realized	42,353	16,335
Unrealized	106,230	72,826
Total Investment Income	148,583	89,161
Interest and Dividend Revenue	12,557	7,636
Other	2,144	(1,207)
Total Revenues	1,246,473	952,036
Expenses
Compensation	451,430	495,255
Performance Fee Compensation
Performance Fee Compensation - Realized Carried Interest	89,437	7,938
Performance Fee Compensation - Realized Incentive Fees	10,508	4,252
Performance Fee Compensation - Unrealized Carried Interest	95,472	84,543
Performance Fee Compensation - Unrealized Incentive Fees	44,478	12,779
Total Compensation and Benefits	691,325	604,767
General, Administrative and Other	109,306	142,766
Interest Expense	27,062	14,518
Fund Expenses	7,408	21,742
Total Expenses	835,101	783,793
Other Income
Net Gains from Fund Investment Activities	67,210	288,142
Income Before Provision for Taxes	478,582	456,385
Provision for Taxes	50,993	38,753
Net Income	427,589	417,632
Net Income Attributable to Redeemable Non-Controlling Interests in Consolidated Entities	62,316	54,259
Net Income (Loss) Attributable to Non-Controlling Interests in Consolidated Entities	(9,452)	197,643
Net Income Attributable to Non-Controlling Interests in Blackstone Holdings	207,090	107,405
Net Income Attributable to The Blackstone Group L.P.	167,635	58,325
Distributions Declared per Common Unit	$ 0.42	$ 0.22
Net Income Per Common Unit - Basic	$ 0.29	$ 0.12
Net Income Per Common Unit - Diluted	$ 0.29	$ 0.11
Weighted-Average Common Units Outstanding
Common Units, Basic	582,322,183	506,985,529
Common Units, Diluted	585,699,899	517,389,558
Revenues Earned from Affiliates
Management and Advisory Fees, Net	$ 39,371	$ 47,984