Related Party Transactions - Additional Information (Detail) - USD ($) $ in Thousands	2 Months Ended	12 Months Ended
	Feb. 26, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Related Party Transaction [Line Items]
Founder's, other senior managing directors' and employees' investments		$ 746,300	$ 1,000,000
Founder's, other senior managing directors' and employees' share of the Net Income Attributable to Redeemable Non-Controlling Interests		49,000	176,000	$ 224,700
Management and Advisory Fees, Net from Affiliates		210,672	327,134	253,877
Interest from loans to affiliates		$ 5,000	$ 2,900	3,400
Partnership Unit to Blackstone Common Unit ratio		100.00%
Cash saving in tax receivable agreements, percentage		85.00%
Reduction in tax receivable agreement		$ 82,707		$ 20,469
Expected future payments under the tax receivable agreements		$ 1,200,000
Expected future payments under the tax receivable agreements in years		15 years
After-tax net present value estimated payments		$ 402,400
After-tax net present value discount rate assumption		15.00%
Subsequent Event
Related Party Transaction [Line Items]
Payments made under tax receivable agreements and related tax benefits	$ 79,000