Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Activities
Net Income (Loss)	$ 2,892,919	$ 829,882	$ (268,453)
Blackstone Funds Related
Unrealized Depreciation (Appreciation) on Investments Allocable to Non-Controlling Interests in Consolidated Entities	(1,069,479)	(397,470)	59,973
Net Realized Gains on Investments	(1,792,106)	(710,755)	(540,353)
Changes in Unrealized Gains on Investments Allocable to The Blackstone Group L.P.	(506,546)	(181,481)	(116,183)
Unrealized Depreciation (Appreciation) on Hedge Activities		22,599	(1,283)
Non-Cash Performance Fees	(1,143,903)	(699,711)	(714,830)
Non-Cash Performance Fee Compensation	1,413,182	513,546	316,713
Equity-Based Compensation Expense	855,087	949,633	1,396,062
Excess Tax Benefits Related to Equity-Based Compensation	(5,769)
Amortization of Intangibles	95,671	139,174	207,591
Other Non-Cash Amounts Included in Net Income (Loss)	206,451	353,052	164,359
Cash Flows Due to Changes in Operating Assets and Liabilities
Cash Held by Blackstone Funds and Other	371,641	(367,101)	545,637
Cash Relinquished with Deconsolidation and Liquidation of Partnership	(173,726)	(48,284)	(110,607)
Accounts Receivable	(46,580)	(60,520)	116,714
Reverse Repurchase Agreements	99,034	(108,533)	41,940
Due from Affiliates	237,169	(73,485)	(31,403)
Other Assets	15,445	51,031	(19,233)
Accrued Compensation and Benefits	(454,724)	(119,862)	(273,281)
Securities Sold, Not Yet Purchased	(142,952)	88,474	22,407
Accounts Payable, Accrued Expenses and Other Liabilities	(316,082)	(408,256)	(203,419)
Repurchase Agreements	174,629	40,417	39,177
Due to Affiliates	(216,671)	(88,425)	(3,439)
Treasury Cash Management Strategies
Investments Purchased	(4,368,096)	(3,414,291)	(3,198,632)
Cash Proceeds from Sale of Investments	4,643,886	2,729,689	3,486,836
Blackstone Funds Related
Investments Purchased	(8,245,313)	(6,845,184)	(6,113,038)
Cash Proceeds from Sale or Pay Down of Investments	11,024,774	8,389,016	6,296,358
Net Cash Provided by Operating Activities	3,547,941	583,155	1,099,613
Investing Activities
Purchase of Furniture, Equipment and Leasehold Improvements	(25,637)	(37,020)	(36,484)
Net Cash Paid for Acquisitions, Net of Cash Acquired	(146,117)	(188,306)	(23,744)
Changes in Restricted Cash	5,850	2,345	330
Net Cash Used in Investing Activities	(165,904)	(222,981)	(59,898)
Financing Activities
Distributions to Non-Controlling Interest Holders in Consolidated Entities	(844,011)	(261,582)	(608,287)
Contributions from Non-Controlling Interest Holders in Consolidated Entities	1,114,457	773,714	1,183,952
Purchase of Interests from Certain Non-Controlling Interest Holders	(43)	(63)	(466)
Net Delivery of Vested Common Units and Repurchase of Common and Holdings Units	(24,140)	(22,364)	(36,711)
Excess Tax Benefits Related to Equity-Based Compensation	5,769
Proceeds from Loans Payable	11,367	633,742	13,301
Repayment and Repurchase of Loans Payable	(16,777)	(33,168)	(27,424)
Distributions to Unitholders	(1,469,479)	(614,530)	(702,832)
Blackstone Funds Related
Proceeds from Loans Payable	53,917	17,820	342,133
Repayment of Loans Payable	(2,090,674)	(898,980)	(1,037,181)
Net Cash Used in Financing Activities	(3,259,614)	(405,411)	(873,515)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	73	(5)	(77)
Net Increase (Decrease) in Cash and Cash Equivalents	122,496	(45,242)	166,123
Cash and Cash Equivalents, Beginning of Period	709,502	754,744	588,621
Cash and Cash Equivalents, End of Period	831,998	709,502	754,744
Supplemental Disclosure of Cash Flows Information
Payments for Interest	125,361	80,159	81,407
Payments for Income Taxes	69,858	30,234	43,945
Supplemental Disclosure of Non-Cash Investing and Financing Activities
Non-Cash Contributions from Non-Controlling Interest Holders	63,273	6,803
Non-Cash Distributions to Non-Controlling Interest Holders	(18,537)	(6,803)
Net Activities Related to Capital Transactions of Consolidated Blackstone Funds	(6,029)	(5,409)	(2,775)
Net Assets Related to the Consolidation of CLO Vehicles		233,541	97,773
Net Assets Related to the Consolidation of Certain Fund Entities	659,001	50,224
In-kind Redemption of Capital		(2,017)	(52,467)
In-kind Contribution of Capital	2,323	2,017	8,705
Notes Issuance Costs		4,788
Transfer of Interests to Non-Controlling Interest Holders	(2,403)	(4,584)	2,614
Change in The Blackstone Group L.P.'s Ownership Interest	(2,519)	(2,423)	(5,893)
Net Settlement of Vested Common Units	153,522	167,046	186,644
Conversion of Blackstone Holdings Units to Common Units	43,255	256,239	228,722
Acquisition of Ownership Interests from Non-Controlling Interest Holders
Deferred Tax Asset	(113,757)	(204,320)	(300,471)
Due to Affiliates	33,177	146,964	242,080
Partners' Capital	80,580	57,356	58,391
Issuance of New Units	$ 42,400		$ 44,500