v2.4.0.6

Summary of Changes in Financial Liabilities Measured at Fair Value for Which Level III Inputs Were Used (Detail) (Level 3, USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance, Beginning of Period	$ 11,841,790	$ 6,591,328		$ 8,080,002		$ 6,433,589
Transfer In Due to Consolidation and Acquisition		1,925,466	[1]	3,568,309	[1]	1,925,466	[1]
Issuances	227	204		5,458		404
Settlements	(140,974)	(74,058)		(275,593)		(247,754)
Realized Gains (Losses), Net	(1)	2,319		43		7,715
Changes in Unrealized Gains (Losses) Included in Earnings Related to Liabilities Still Held at the Reporting Date	(465,141)	120,917		(142,318)		446,756
Balance, End of Period	11,235,901	8,566,176		11,235,901		8,566,176
Collateralized Loan Obligations Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance, Beginning of Period	10,984,018	6,023,892		7,449,766		5,877,957
Transfer In Due to Consolidation and Acquisition		1,829,899	[1]	3,419,084	[1]	1,829,899	[1]
Issuances	227	204		4,620		404
Settlements	(140,736)	(73,830)		(272,609)		(235,273)
Realized Gains (Losses), Net	(1)	2,319		43		7,715
Changes in Unrealized Gains (Losses) Included in Earnings Related to Liabilities Still Held at the Reporting Date	(309,255)	77,043		(66,651)		378,825
Balance, End of Period	10,534,253	7,859,527		10,534,253		7,859,527
Collateralized Loan Obligations Subordinated Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance, Beginning of Period	857,772	567,436		630,236		555,632
Transfer In Due to Consolidation and Acquisition		95,567	[1]	149,225	[1]	95,567	[1]
Issuances				838
Settlements	(238)	(228)		(2,984)		(12,481)
Changes in Unrealized Gains (Losses) Included in Earnings Related to Liabilities Still Held at the Reporting Date	(155,886)	43,874		(75,667)		67,931
Balance, End of Period	$ 701,648	$ 706,649		$ 701,648		$ 706,649
[1] Represents the transfer into Level III of financial assets and liabilities held by CLO vehicles as a result of the acquisition of management contracts on May 16, 2011 and the Harbourmaster acquisition on January 5, 2012.

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- Definition

Fair Value Liabilities Measured On Recurring Basis Realized Gain Loss Net

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- Definition

Amount of gain (loss) recognized in earnings, arising from liabilities measured at fair value on a recurring basis using unobservable inputs (level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

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-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258



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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Issues that have taken place during the period in relation to liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy.

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Settlements that have taken place during the period in relation to liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy.

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This element represents [net] transfers in to and out of liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3) which have taken place during the period.

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This element represents a liability measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

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