v2.4.0.8
Financial Assets and Liabilities at Fair Value (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investment Funds $ 897,843 [1] $ 892,264 [1]
Equity Securities 375,662 [1] 341,612 [1]
Partnership and LLC Interests 1,343,458 [1] 593,738 [1]
Debt Instruments 1,200,397 [1] 920,847 [1]
Corporate Loans 8,466,889 [1] 11,053,513 [1]
Corporate Bonds 161,382 [1] 162,456 [1]
Other 41,061 [1] 18,285 [1]
Investments of Consolidated Funds 12,521,248 [1] 14,026,745 [1]
Blackstone's Treasury Cash Management Strategies 1,104,800 1,411,680
Money Market Funds 173,781 129,549
Freestanding Derivatives, Assets 44,899 99,374
Securities Sold, Not Yet Purchased 76,195 226,425
Total Financial Liabilities 9,003,502 11,790,102
Loans and Receivables 137,788 30,663
Other Investments 118,804 46,124
Total Financial Assets 14,066,764 15,700,105
Senior Secured Notes 8,302,572 [1] 10,695,136 [1]
Subordinated Notes 610,435 [1] 846,471 [1]
Freestanding Derivatives-Foreign Currency Contracts 10,018 [1] 17,101 [1]
Freestanding Derivatives-Interest Rate Contracts   772 [1]
Foreign Currency Contracts
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives - Foreign Currency Contracts 30,830 [1] 37,898 [1]
Freestanding Derivatives, Assets 1,480 74
Freestanding Derivatives, Liabilities 1,015 81
Interest Rate Contracts
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives - Interest Rate Contracts 3,726 [1] 6,132 [1]
Freestanding Derivatives, Assets 8,521 55,270
Freestanding Derivatives, Liabilities 2,676 4,116
Total Return Swaps
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Assets 342  
Credit Default Swaps
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Liabilities 591  
Level 1
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity Securities 51,147 [1] 95,898 [1]
Partnership and LLC Interests   212 [1]
Other 3,477 [1]  
Investments of Consolidated Funds 54,624 [1] 96,110 [1]
Blackstone's Treasury Cash Management Strategies 19,629 672,766
Money Market Funds 173,781 129,549
Total Financial Liabilities 2,484 277
Other Investments 87,068 12,443
Total Financial Assets 342,525 911,354
Level 1 | Interest Rate Contracts
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Assets 7,423 486
Freestanding Derivatives, Liabilities 2,484 277
Level 2
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investment Funds   1,799 [1]
Equity Securities 130,816 [1] 28,654 [1]
Partnership and LLC Interests 88,555 [1] 12,375 [1]
Debt Instruments 1,154,902 [1] 903,123 [1]
Corporate Loans 7,537,661 [1] 9,775,070 [1]
Corporate Bonds 161,382 [1] 146,625 [1]
Other   1,260 [1]
Investments of Consolidated Funds 9,107,872 [1] 10,912,936 [1]
Blackstone's Treasury Cash Management Strategies 1,041,039 737,708
Securities Sold, Not Yet Purchased 76,195 226,425
Total Financial Liabilities 88,011 248,218
Other Investments 17,270 6,783
Total Financial Assets 10,169,101 11,712,285
Freestanding Derivatives-Foreign Currency Contracts 10,018 [1] 17,101 [1]
Freestanding Derivatives-Interest Rate Contracts   772 [1]
Level 2 | Foreign Currency Contracts
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives - Foreign Currency Contracts 30,830 [1] 37,898 [1]
Freestanding Derivatives, Assets 1,480 74
Freestanding Derivatives, Liabilities 1,015 81
Level 2 | Interest Rate Contracts
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives - Interest Rate Contracts 3,726 [1] 6,132 [1]
Freestanding Derivatives, Assets 1,098 54,784
Freestanding Derivatives, Liabilities 192 3,839
Level 2 | Total Return Swaps
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Assets 342  
Level 2 | Credit Default Swaps
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Freestanding Derivatives, Liabilities 591  
Level 3
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investment Funds 897,843 [1] 890,465 [1]
Equity Securities 193,699 [1] 217,060 [1]
Partnership and LLC Interests 1,254,903 [1] 581,151 [1]
Debt Instruments 45,495 [1] 17,724 [1]
Corporate Loans 929,228 [1] 1,278,443 [1]
Corporate Bonds   15,831 [1]
Other 37,584 [1] 17,025 [1]
Investments of Consolidated Funds 3,358,752 [1] 3,017,699 [1]
Blackstone's Treasury Cash Management Strategies 44,132 1,206
Total Financial Liabilities 8,913,007 11,541,607
Loans and Receivables 137,788 30,663
Other Investments 14,466 26,898
Total Financial Assets 3,555,138 3,076,466
Senior Secured Notes 8,302,572 [1] 10,695,136 [1]
Subordinated Notes $ 610,435 [1] $ 846,471 [1]
[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.