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, 2014
Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity and Preferred Securities $ 83,404 $ 88,568
Total Assets 6,269,990 8,895,688
Total Liabilities 5,682,920 8,913,007
Corporate Bonds
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets of Consolidated CLO Vehicles: Corporate Bonds 196,703 [1] 161,382 [1]
Senior Secured Notes | Liabilities of Consolidated CLO Vehicles
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of Notes 5,322,648 [1] 8,302,572 [1]
Subordinated Notes | Liabilities of Consolidated CLO Vehicles
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of Notes 360,272 [1] 610,435 [1]
Other
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets of Consolidated CLO Vehicles: Other 49,456 [1] 41,061 [1]
Loans And Receivables
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans and Receivables 69,794 137,788
Corporate Loans
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets of Consolidated CLO Vehicles: Corporate Loans $ 5,870,633 [1] $ 8,466,889 [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.