v2.4.0.6

Summary of Quantitative Inputs and Assumptions for Items Categorized in Level III of Fair Value Hierarchy (Detail) (USD $) In Thousands, unless otherwise specified			6 Months Ended				6 Months Ended						6 Months Ended						6 Months Ended			6 Months Ended			6 Months Ended			6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Level 3 Collateralized Loan Obligations Discounted Cash Flows	Jun. 30, 2012 Level 3 Collateralized Loan Obligations Discounted Cash Flows Minimum	Jun. 30, 2012 Level 3 Collateralized Loan Obligations Discounted Cash Flows Maximum	Jun. 30, 2012 Level 3 Consolidated Equity Securities Discounted Cash Flows	Jun. 30, 2012 Level 3 Consolidated Equity Securities Discounted Cash Flows Minimum	Jun. 30, 2012 Level 3 Consolidated Equity Securities Discounted Cash Flows Maximum	Jun. 30, 2012 Level 3 Consolidated Equity Securities Market Comparable Companies	Jun. 30, 2012 Level 3 Consolidated Equity Securities Market Comparable Companies Minimum	Jun. 30, 2012 Level 3 Consolidated Equity Securities Market Comparable Companies Maximum	Jun. 30, 2012 Level 3 Partnership And LLC Interests Discounted Cash Flows	Jun. 30, 2012 Level 3 Partnership And LLC Interests Discounted Cash Flows Minimum	Jun. 30, 2012 Level 3 Partnership And LLC Interests Discounted Cash Flows Maximum	Jun. 30, 2012 Level 3 Debt Instruments Discounted Cash Flows	Jun. 30, 2012 Level 3 Debt Instruments Discounted Cash Flows Minimum	Jun. 30, 2012 Level 3 Debt Instruments Discounted Cash Flows Maximum	Jun. 30, 2012 Level 3 Debt Instruments Market Comparable Companies	Jun. 30, 2012 Level 3 Debt Instruments Market Comparable Companies Minimum	Jun. 30, 2012 Level 3 Debt Instruments Market Comparable Companies Maximum	Jun. 30, 2012 Level 3 Assets Of Consolidated CLO Vehicles Discounted Cash Flows	Jun. 30, 2012 Level 3 Assets Of Consolidated CLO Vehicles Discounted Cash Flows Minimum	Jun. 30, 2012 Level 3 Assets Of Consolidated CLO Vehicles Discounted Cash Flows Maximum	Jun. 30, 2012 Level 3 Assets Of Consolidated CLO Vehicles Market Comparable Companies	Jun. 30, 2012 Level 3 Assets Of Consolidated CLO Vehicles Market Comparable Companies Minimum	Jun. 30, 2012 Level 3 Assets Of Consolidated CLO Vehicles Market Comparable Companies Maximum	Jun. 30, 2012 Level 3 Loans And Receivables Discounted Cash Flows	Jun. 30, 2012 Level 3 Loans And Receivables Discounted Cash Flows Minimum	Jun. 30, 2012 Level 3 Loans And Receivables Discounted Cash Flows Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	$ 11,830,719	$ 8,140,523				$ 124,105			$ 1,931			$ 533,520			$ 8,499			$ 772			$ 128,694			$ 86,555			$ 104,207
Fair value liabilities	$ 11,235,901	$ 8,080,002	$ 11,235,901
Discount Rate				1.10%	80.00%		8.10%	25.00%					3.10%	22.50%		10.70%	48.00%					6.00%	18.00%					6.80%	23.30%
Revenue CAGR							1.60%	83.40%					(5.60%)	62.00%
Exit Multiple							5.8	17.0					4.5	14.8
Book Value Multiple									0.8
EBITDA Multiple										6.5	8.3								3.5	8.3					2.0	10.6
Exit Capitalization Rate													1.00%	9.50%	7.50%
Liquidity Discount																									1.00%	25.00%
Default Rate				2.00%	5.00%										2.00%
Recovery Rate				30.00%	70.00%										70.00%
Recovery Lag			12 months												12 months
Pre-payment Rate				5.00%	20.00%										20.00%
Reinvestment Rate			3.20%												3.20%

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- Definition

Fair Value Inputs, Book Value Multiple

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Fair Value Inputs, Exit Multiple

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Fair Value Inputs, Liquidity Discount

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Fair Value Inputs, Recovery Lag

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Fair Value Inputs, Recovery Rate

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This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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- Definition

Ratio of the net operating income produced by an asset and its capital cost (original prices paid to buy the asset), used as an input to measure fair value.

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Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

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Market valuation of entity divided by earnings before interest, taxes, depreciation, and amortization (EBITDA), used as an input to measure fair value.

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- Definition

Percentage of assumed long-term growth in revenues, used as an input to measure fair value.

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- Definition

Rate at which loans or a loan portfolio are expected to prepay principal balances, used as an input to measure fair value.

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Percentage of likelihood a loan will not be repaid and instead default, used as an input to measure fair value.

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This element represents the aggregate of the liabilities reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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