v3.3.0.814
Financial Assets and Liabilities at Fair Value (Detail) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total Blackstone's Treasury Cash Management Strategies $ 2,158,590 $ 1,666,061
Money Market Funds 308,504 198,278
Net Investment Hedges - Foreign Currency Contracts   523
Freestanding Derivatives, Assets 6,048 15,009
Investments of Consolidated Funds 4,743,145 11,375,407
Freestanding Derivatives, Liabilities 30,769 30,528
Other Investments 159,056 146,251
Total Financial Assets 7,552,253 13,430,207
Securities Sold, Not Yet Purchased 173,707 85,878
Total Financial Liabilities 3,560,084 6,913,510
Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Assets 6,048 14,486
Freestanding Derivatives, Liabilities 30,525 30,528
Loans and Receivables    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans and Receivables 179,255 40,397
Corporate Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Corporate Loans 3,194,584 6,279,592
Investments Of Consolidated Blackstone Funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investment Funds [1] 154,183 1,103,210
Equity Securities [1] 210,855 352,360
Partnership and LLC Interests [1] 626,281 1,683,562
Debt Instruments [1] 203,223 1,608,284
Investments of Consolidated Funds [1] 4,743,145 11,375,407
Investments Of Consolidated Blackstone Funds | Corporate Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Corporate Loans [1] 3,194,584 6,279,592
Blackstone's Treasury Cash Management Strategies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investment Funds 235,427 307,111
Equity Securities 242,534 71,746
Debt Instruments 1,547,752 1,226,195
Other 132,877 61,009
Total Blackstone's Treasury Cash Management Strategies 2,158,590 1,666,061
Credit Default Swap | Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Assets   85
Freestanding Derivatives, Liabilities 6,413 868
Credit Default Swap | Investments Of Consolidated Blackstone Funds | Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Liabilities 4,454 2,514
Other    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other   44,513
Other | Investments Of Consolidated Blackstone Funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other [1]   44,513
Corporate Bonds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Corporate Bonds 351,674 292,690
Corporate Bonds | Investments Of Consolidated Blackstone Funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Corporate Bonds [1] 351,674 292,690
Foreign Currency Contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Net Investment Hedges - Foreign Currency Contracts   523
Net Investment Hedges - Foreign Currency Contracts 244  
Foreign Currency Contracts | Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Assets 2,443 2,798
Freestanding Derivatives, Liabilities 1,849 681
Foreign Currency Contracts | Investments Of Consolidated Blackstone Funds | Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Assets [1] 2,345 8,915
Interest Rate Contracts | Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Assets 1,260 407
Freestanding Derivatives, Liabilities 11,834  
Interest Rate Contracts | Investments Of Consolidated Blackstone Funds | Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Assets [1]   2,281
Liabilities of Consolidated Funds and CLO Vehicles | Credit Default Swap | Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Liabilities [1] 4,454 2,514
Liabilities of Consolidated Funds and CLO Vehicles | Foreign Currency Contracts | Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Liabilities [1] 5,975 21,875
Liabilities of Consolidated Funds and CLO Vehicles | Interest Rate Contracts | Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Liabilities   4,590
Liabilities of Consolidated Funds and CLO Vehicles | Senior Secured Notes    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of Notes [1] 3,244,579 [2] 6,448,352
Liabilities of Consolidated Funds and CLO Vehicles | Subordinated Notes    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of Notes [1] 111,029 [2] 348,752
Net Asset Value    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other Investments 26,070 9,593
Total Financial Assets 430,920 1,224,319
Net Asset Value | Investments Of Consolidated Blackstone Funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investment Funds [1] 154,183 1,103,210
Investments of Consolidated Funds [1] 154,183 1,103,210
Net Asset Value | Blackstone's Treasury Cash Management Strategies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt Instruments 117,790 50,507
Other 132,877 61,009
Total Blackstone's Treasury Cash Management Strategies 250,667 111,516
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Money Market Funds 308,504 198,278
Other Investments 29,282 31,731
Total Financial Assets 881,446 668,076
Total Financial Liabilities 3,827 1,357
Level 1 | Investments Of Consolidated Blackstone Funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity Securities [1] 65,038 58,934
Investments of Consolidated Funds [1] 65,038 58,947
Level 1 | Blackstone's Treasury Cash Management Strategies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investment Funds 235,427 307,111
Equity Securities 242,534 71,746
Total Blackstone's Treasury Cash Management Strategies 477,961 378,857
Level 1 | Other | Investments Of Consolidated Blackstone Funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other [1]   13
Level 1 | Interest Rate Contracts | Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Assets 661 263
Freestanding Derivatives, Liabilities 3,827  
Level 1 | Liabilities of Consolidated Funds and CLO Vehicles | Interest Rate Contracts | Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Liabilities   1,357
Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other Investments   436
Total Financial Assets 5,074,479 8,913,207
Securities Sold, Not Yet Purchased 173,707 85,878
Total Financial Liabilities 3,556,257 115,049
Level 2 | Investments Of Consolidated Blackstone Funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity Securities [1] 53,506 114,115
Partnership and LLC Interests [1] 118,342 187,140
Debt Instruments [1] 171,179 1,502,314
Investments of Consolidated Funds [1] 3,686,068 7,818,427
Level 2 | Investments Of Consolidated Blackstone Funds | Corporate Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Corporate Loans [1] 2,992,996 5,691,517
Level 2 | Blackstone's Treasury Cash Management Strategies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt Instruments 1,385,369 1,090,794
Total Blackstone's Treasury Cash Management Strategies 1,385,369 1,090,794
Level 2 | Credit Default Swap | Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Assets   85
Freestanding Derivatives, Liabilities 6,413 868
Level 2 | Other | Investments Of Consolidated Blackstone Funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other [1]   19,455
Level 2 | Corporate Bonds | Investments Of Consolidated Blackstone Funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Corporate Bonds [1] 347,700 292,690
Level 2 | Foreign Currency Contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Net Investment Hedges - Foreign Currency Contracts   523
Net Investment Hedges - Foreign Currency Contracts 244  
Level 2 | Foreign Currency Contracts | Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Assets 2,443 2,798
Freestanding Derivatives, Liabilities 1,849 681
Level 2 | Foreign Currency Contracts | Investments Of Consolidated Blackstone Funds | Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Assets [1] 2,345 8,915
Level 2 | Interest Rate Contracts | Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Assets 599 144
Freestanding Derivatives, Liabilities 8,007  
Level 2 | Interest Rate Contracts | Investments Of Consolidated Blackstone Funds | Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Assets [1]   2,281
Level 2 | Liabilities of Consolidated Funds and CLO Vehicles | Credit Default Swap | Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Liabilities [1] 4,454 2,514
Level 2 | Liabilities of Consolidated Funds and CLO Vehicles | Foreign Currency Contracts | Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Liabilities [1] 5,975 21,875
Level 2 | Liabilities of Consolidated Funds and CLO Vehicles | Interest Rate Contracts | Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Liabilities   3,233
Level 2 | Liabilities of Consolidated Funds and CLO Vehicles | Senior Secured Notes    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of Notes [1],[2] 3,244,579  
Level 2 | Liabilities of Consolidated Funds and CLO Vehicles | Subordinated Notes    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of Notes [1],[2] 111,029  
Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other Investments 103,704 104,491
Total Financial Assets 1,165,408 2,624,605
Total Financial Liabilities   6,797,104
Level 3 | Loans and Receivables    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans and Receivables 179,255 40,397
Level 3 | Investments Of Consolidated Blackstone Funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity Securities [1] 92,311 179,311
Partnership and LLC Interests [1] 507,939 1,496,422
Debt Instruments [1] 32,044 105,970
Investments of Consolidated Funds [1] 837,856 2,394,823
Level 3 | Investments Of Consolidated Blackstone Funds | Corporate Loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Corporate Loans [1] 201,588 588,075
Level 3 | Blackstone's Treasury Cash Management Strategies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt Instruments 44,593 84,894
Total Blackstone's Treasury Cash Management Strategies 44,593 84,894
Level 3 | Other | Investments Of Consolidated Blackstone Funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other [1]   25,045
Level 3 | Corporate Bonds | Investments Of Consolidated Blackstone Funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Corporate Bonds [1] $ 3,974  
Level 3 | Liabilities of Consolidated Funds and CLO Vehicles | Senior Secured Notes    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of Notes [1]   6,448,352
Level 3 | Liabilities of Consolidated Funds and CLO Vehicles | Subordinated Notes    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of Notes [1]   $ 348,752
[1] Pursuant to GAAP consolidation guidance, the Partnership is required to consolidate all VIEs in which it has been identified as the primary beneficiary, including certain CLO vehicles, and other funds in which a consolidated entity of the Partnership, as the general partner of the fund, is presumed to have control. While the Partnership is required to consolidate certain funds, including CLO vehicles, for GAAP purposes, the Partnership has no ability to utilize the assets of these funds and there is no recourse to the Partnership for their liabilities since these are client assets and liabilities.
[2] Senior and subordinate notes issued by CLO vehicles are classified based on the more observable fair value of CLO assets less (a) the fair value of any beneficial interests held by Blackstone, and (b) the carrying value of any beneficial interests that represent compensation for services.