v2.4.0.8
Summary of Financial Instruments for Which Fair Value Option Has Been Elected (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets of Consolidated CLO Vehicles: Corporate Loans $ 8,800,348 [1] $ 11,053,513 [1]
Assets of Consolidated CLO Vehicles: Corporate Bonds 146,086 [1] 162,456 [1]
Assets of Consolidated CLO Vehicles: Other 14,348 [1] 18,285 [1]
Total Assets 9,124,473 11,281,064
Liabilities of Consolidated CLO Vehicles: Senior Secured Notes 8,641,507 [1] 10,695,136 [1]
Liabilities of Consolidated CLO Vehicles: Subordinated Notes 605,380 [1] 846,471 [1]
Total Liabilities 9,246,887 11,541,607
Loans And Receivables
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans and Receivables 98,077 30,663
Equity and Preferred Securities
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity and Preferred Securities 65,614 16,147
Corporate Loans
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets of Consolidated CLO Vehicles: Corporate Loans 8,800,348 11,053,513
Corporate Bonds
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets of Consolidated CLO Vehicles: Corporate Bonds 146,086 162,456
Other
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets of Consolidated CLO Vehicles: Other 14,348 18,285
Senior Secured Notes
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Liabilities of Consolidated CLO Vehicles: Senior Secured Notes 8,641,507 10,695,136
Subordinated Notes
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Liabilities of Consolidated CLO Vehicles: Subordinated Notes $ 605,380 $ 846,471
[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.