Consolidated Statement of Changes in Partners' Capital - USD ($) $ in Thousands	Total	Common Units	Accumulated Other Comprehensive (Loss)	Parent	Noncontrolling Interest Consolidated Entities	Noncontrolling Interest Blackstone Holdings
Beginning Balance at Dec. 31, 2016	$ 12,322,091	$ 6,521,531	$ (62,887)	$ 6,458,644	$ 2,428,964	$ 3,434,483
Beginning Balance, Units at Dec. 31, 2016		643,459,542
Net Income	1,733,628	$ 789,316		789,316	251,629	692,683
Currency Translation Adjustment	46,593		15,408	15,408	31,185
Consolidation of a Fund Entity	387,006				387,006
Capital Contributions	375,161	(147)		(147)	375,308
Capital Distributions	(1,985,653)	(882,742)		(882,742)	(348,513)	(754,398)
Transfer of Non-Controlling Interests in Consolidated Entities	(2,408)				(2,408)
Deferred Tax Effects Resulting from Acquisition of Ownership Interests from Non-Controlling Interest Holders	7,286	7,286		7,286
Equity-Based Compensation	160,525	87,964		87,964		72,561
Net Delivery of Vested Blackstone Holdings Partnership Units and Blackstone Common Units	(13,219)	$ (12,429)		(12,429)		(790)
Net Delivery of Vested Blackstone Holdings Partnership Units and Blackstone Common Units, Units		3,775,544
Change in The Blackstone Group L.P.'s Ownership Interest	13,821	$ (13,821)		(13,821)		13,821
Conversion of Blackstone Holdings Partnership Units to Blackstone Common Units		$ 43,520		43,520		(43,520)
Conversion of Blackstone Holdings Partnership Units to Blackstone Common Units, Units		6,566,308
Ending Balance at Jun. 30, 2017	13,031,010	$ 6,540,478	(47,479)	6,492,999	3,123,171	3,414,840
Ending Balance, Units at Jun. 30, 2017		653,801,394
Beginning Balance at Dec. 31, 2016	185,390
Net Income	2,991
Capital Contributions	21,353
Capital Distributions	(19,034)
Ending Balance at Jun. 30, 2017	190,700
Beginning Balance at Dec. 31, 2017	13,512,147	$ 6,668,511	(34,018)	6,634,493	3,253,148	3,624,506
Beginning Balance, Units at Dec. 31, 2017		659,526,093
Transfer Out Due to Deconsolidation of Fund Entities	(197,091)				(197,091)
Net Income	2,393,651	$ 1,109,914		1,109,914	284,577	999,160
Currency Translation Adjustment	(26,248)		(23,858)	(23,858)	(2,390)
Capital Contributions	424,132				424,132
Capital Distributions	(1,781,297)	(806,770)		(806,770)	(291,963)	(682,564)
Transfer of Non-Controlling Interests in Consolidated Entities	22,208				22,208
Deferred Tax Effects Resulting from Acquisition of Ownership Interests from Non-Controlling Interest Holders	10,922	10,922		10,922
Equity-Based Compensation	180,419	100,519		100,519		79,900
Net Delivery of Vested Blackstone Holdings Partnership Units and Blackstone Common Units	(15,331)	$ (14,496)		(14,496)		(835)
Net Delivery of Vested Blackstone Holdings Partnership Units and Blackstone Common Units, Units		3,032,372
Repurchase of Common Units and Blackstone Holdings Partnership Units	(71,685)	$ (71,685)		(71,685)
Repurchase of Common Units and Blackstone Holdings Partnership Units, Units		(2,200,000)
Change in The Blackstone Group L.P.'s Ownership Interest	(835)	$ 835		835		(835)
Conversion of Blackstone Holdings Partnership Units to Blackstone Common Units		$ 82,505		82,505		(82,505)
Conversion of Blackstone Holdings Partnership Units to Blackstone Common Units, Units		12,434,878
Issuance of Common Units, Units		750,739
Ending Balance at Jun. 30, 2018	14,476,797	$ 7,105,225	$ (57,876)	7,047,349	$ 3,492,621	$ 3,936,827
Ending Balance, Units at Jun. 30, 2018		673,544,082
Beginning Balance at Dec. 31, 2017	210,944
Net Income	(370)
Capital Contributions	1,100
Capital Distributions	(52,875)
Ending Balance at Jun. 30, 2018	158,799
Issuance of Common Units	$ 24,970	$ 24,970		$ 24,970