Partnership's Borrowings Through Consolidated CLO Vehicles (Detail) (Partnership's Borrowings Through Consolidated CLO Vehicles, USD $) In Thousands, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
Debt Instrument [Line Items]
Borrowing Outstanding	$ 9,263,784		$ 9,826,621
Senior Secured Notes
Debt Instrument [Line Items]
Borrowing Outstanding	8,104,418		8,605,553
Weighted Average Interest Rate	1.05%		1.09%
Weighted Average Remaining Maturity in Years	3 years 10 months 24 days		4 years 1 month 6 days
Subordinated Notes
Debt Instrument [Line Items]
Borrowing Outstanding	$ 1,159,366		$ 1,221,068
Weighted Average Interest Rate		[1]		[1]
Weighted Average Remaining Maturity in Years

[1] The Subordinated Notes do not have contractual interest rates but instead receive distributions from the excess cash flows of the CLO vehicles.