FAIR VALUE MEASUREMENTS (Details 3) (Level III, USD $)	3 Months Ended
	Mar. 31, 2013
Private Equity
Level III investments and other financial instruments by valuation methodologies
Fair Value	26,673,255,000
Private Equity | Health Care
Level III investments and other financial instruments by valuation methodologies
Fair Value	5,304,198,000
Private Equity | Retail
Level III investments and other financial instruments by valuation methodologies
Fair Value	3,735,858,000
Private Equity | Technology
Level III investments and other financial instruments by valuation methodologies
Fair Value	3,399,222,000
Private Equity | Manufacturing
Level III investments and other financial instruments by valuation methodologies
Fair Value	3,340,070,000
Private Equity | Consumer Products
Level III investments and other financial instruments by valuation methodologies
Fair Value	3,174,444,000
Private Equity | Other
Level III investments and other financial instruments by valuation methodologies
Fair Value	7,719,463,000
Fixed Income
Level III investments and other financial instruments by valuation methodologies
Fair Value	1,443,494,000
Natural Resources/Infrastructure
Level III investments and other financial instruments by valuation methodologies
Fair Value	1,668,151,000
Real Estate
Level III investments and other financial instruments by valuation methodologies
Fair Value	327,819,000
Real Assets
Level III investments and other financial instruments by valuation methodologies
Fair Value	1,995,970,000
Other
Level III investments and other financial instruments by valuation methodologies
Value of investments in real assets whose valuation inputs are not comparable to other private equity investments	228,600,000
Market Comparables and Discounted Cash Flows | Private Equity | Weighted Average | Health Care
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	7.00%
Weight Ascribed to Market Comparables (as a percent)	50.00%
Weight Ascribed to Discounted Cash Flow (as a percent)	50.00%
Market Comparables and Discounted Cash Flows | Private Equity | Weighted Average | Retail
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	8.00%
Weight Ascribed to Market Comparables (as a percent)	52.00%
Weight Ascribed to Discounted Cash Flow (as a percent)	48.00%
Market Comparables and Discounted Cash Flows | Private Equity | Weighted Average | Technology
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	10.00%
Weight Ascribed to Market Comparables (as a percent)	50.00%
Weight Ascribed to Discounted Cash Flow (as a percent)	50.00%
Market Comparables and Discounted Cash Flows | Private Equity | Weighted Average | Manufacturing
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	10.00%
Weight Ascribed to Market Comparables (as a percent)	45.00%
Weight Ascribed to Discounted Cash Flow (as a percent)	55.00%
Market Comparables and Discounted Cash Flows | Private Equity | Weighted Average | Consumer Products
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	11.00%
Weight Ascribed to Market Comparables (as a percent)	50.00%
Weight Ascribed to Discounted Cash Flow (as a percent)	50.00%
Market Comparables and Discounted Cash Flows | Private Equity | Weighted Average | Other
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	10.00%
Weight Ascribed to Market Comparables (as a percent)	51.00%
Weight Ascribed to Discounted Cash Flow (as a percent)	49.00%
Market Comparables and Discounted Cash Flows | Private Equity | Low end of range | Health Care
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	5.00%
Weight Ascribed to Market Comparables (as a percent)	50.00%
Weight Ascribed to Discounted Cash Flow (as a percent)	50.00%
Market Comparables and Discounted Cash Flows | Private Equity | Low end of range | Retail
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	5.00%
Weight Ascribed to Market Comparables (as a percent)	0.00%
Weight Ascribed to Discounted Cash Flow (as a percent)	33.00%
Market Comparables and Discounted Cash Flows | Private Equity | Low end of range | Technology
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	5.00%
Weight Ascribed to Market Comparables (as a percent)	50.00%
Weight Ascribed to Discounted Cash Flow (as a percent)	50.00%
Market Comparables and Discounted Cash Flows | Private Equity | Low end of range | Manufacturing
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	10.00%
Weight Ascribed to Market Comparables (as a percent)	33.00%
Weight Ascribed to Discounted Cash Flow (as a percent)	33.00%
Market Comparables and Discounted Cash Flows | Private Equity | Low end of range | Consumer Products
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	10.00%
Weight Ascribed to Market Comparables (as a percent)	50.00%
Weight Ascribed to Discounted Cash Flow (as a percent)	50.00%
Market Comparables and Discounted Cash Flows | Private Equity | Low end of range | Other
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	5.00%
Weight Ascribed to Market Comparables (as a percent)	25.00%
Weight Ascribed to Discounted Cash Flow (as a percent)	0.00%
Market Comparables and Discounted Cash Flows | Private Equity | High end of range | Health Care
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	15.00%
Weight Ascribed to Market Comparables (as a percent)	50.00%
Weight Ascribed to Discounted Cash Flow (as a percent)	50.00%
Market Comparables and Discounted Cash Flows | Private Equity | High end of range | Retail
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	20.00%
Weight Ascribed to Market Comparables (as a percent)	67.00%
Weight Ascribed to Discounted Cash Flow (as a percent)	100.00%
Market Comparables and Discounted Cash Flows | Private Equity | High end of range | Technology
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	15.00%
Weight Ascribed to Market Comparables (as a percent)	50.00%
Weight Ascribed to Discounted Cash Flow (as a percent)	50.00%
Market Comparables and Discounted Cash Flows | Private Equity | High end of range | Manufacturing
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	15.00%
Weight Ascribed to Market Comparables (as a percent)	67.00%
Weight Ascribed to Discounted Cash Flow (as a percent)	67.00%
Market Comparables and Discounted Cash Flows | Private Equity | High end of range | Consumer Products
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	15.00%
Weight Ascribed to Market Comparables (as a percent)	50.00%
Weight Ascribed to Discounted Cash Flow (as a percent)	50.00%
Market Comparables and Discounted Cash Flows | Private Equity | High end of range | Other
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	20.00%
Weight Ascribed to Market Comparables (as a percent)	100.00%
Weight Ascribed to Discounted Cash Flow (as a percent)	75.00%
Market Comparables and Discounted Cash Flows | Real Estate | Weighted Average
Level III investments and other financial instruments by valuation methodologies
Weight Ascribed to Discounted Cash Flow (as a percent)	90.00%
Weight Ascribed to direct income capitalization (as a percent)	10.00%
Market Comparables and Discounted Cash Flows | Real Estate | Low end of range
Level III investments and other financial instruments by valuation methodologies
Weight Ascribed to Discounted Cash Flow (as a percent)	50.00%
Weight Ascribed to direct income capitalization (as a percent)	0.00%
Market Comparables and Discounted Cash Flows | Real Estate | High end of range
Level III investments and other financial instruments by valuation methodologies
Weight Ascribed to Discounted Cash Flow (as a percent)	100.00%
Weight Ascribed to direct income capitalization (as a percent)	50.00%
Market Comparables | Private Equity
Level III investments and other financial instruments by valuation methodologies
Maximum percentage of investments that utilize some control premium as a percent of the total investments	1.00%
Enterprise Value / LTM EBITDA Multiple, excluded investment	25
Enterprise Value / Forward EBITDA Multiple, excluded investment	18
Market Comparables | Private Equity | Weighted Average | Health Care
Level III investments and other financial instruments by valuation methodologies
Enterprise Value / LTM EBITDA Multiple	9
Enterprise Value / Forward EBITDA Multiple	9
Market Comparables | Private Equity | Weighted Average | Retail
Level III investments and other financial instruments by valuation methodologies
Enterprise Value / LTM EBITDA Multiple	7
Enterprise Value / Forward EBITDA Multiple	7
Market Comparables | Private Equity | Weighted Average | Technology
Level III investments and other financial instruments by valuation methodologies
Enterprise Value / LTM EBITDA Multiple	10
Enterprise Value / Forward EBITDA Multiple	10
Market Comparables | Private Equity | Weighted Average | Manufacturing
Level III investments and other financial instruments by valuation methodologies
Enterprise Value / LTM EBITDA Multiple	11
Enterprise Value / Forward EBITDA Multiple	10
Market Comparables | Private Equity | Weighted Average | Consumer Products
Level III investments and other financial instruments by valuation methodologies
Enterprise Value / LTM EBITDA Multiple	12
Enterprise Value / Forward EBITDA Multiple	10
Market Comparables | Private Equity | Weighted Average | Other
Level III investments and other financial instruments by valuation methodologies
Enterprise Value / LTM EBITDA Multiple	11
Enterprise Value / Forward EBITDA Multiple	9
Control Premium (as a percent)	1.00%
Market Comparables | Private Equity | Low end of range | Health Care
Level III investments and other financial instruments by valuation methodologies
Enterprise Value / LTM EBITDA Multiple	8
Enterprise Value / Forward EBITDA Multiple	8
Market Comparables | Private Equity | Low end of range | Retail
Level III investments and other financial instruments by valuation methodologies
Enterprise Value / LTM EBITDA Multiple	6
Enterprise Value / Forward EBITDA Multiple	6
Market Comparables | Private Equity | Low end of range | Technology
Level III investments and other financial instruments by valuation methodologies
Enterprise Value / LTM EBITDA Multiple	5
Enterprise Value / Forward EBITDA Multiple	8
Market Comparables | Private Equity | Low end of range | Manufacturing
Level III investments and other financial instruments by valuation methodologies
Enterprise Value / LTM EBITDA Multiple	8
Enterprise Value / Forward EBITDA Multiple	8
Market Comparables | Private Equity | Low end of range | Consumer Products
Level III investments and other financial instruments by valuation methodologies
Enterprise Value / LTM EBITDA Multiple	8
Enterprise Value / Forward EBITDA Multiple	7
Market Comparables | Private Equity | Low end of range | Other
Level III investments and other financial instruments by valuation methodologies
Enterprise Value / LTM EBITDA Multiple	6
Enterprise Value / Forward EBITDA Multiple	6
Control Premium (as a percent)	0.00%
Market Comparables | Private Equity | High end of range
Level III investments and other financial instruments by valuation methodologies
Portfolio company's investments as a percentage of total investments, at fair value	0.50%
Market Comparables | Private Equity | High end of range | Health Care
Level III investments and other financial instruments by valuation methodologies
Enterprise Value / LTM EBITDA Multiple	11
Enterprise Value / Forward EBITDA Multiple	10
Market Comparables | Private Equity | High end of range | Retail
Level III investments and other financial instruments by valuation methodologies
Enterprise Value / LTM EBITDA Multiple	13
Enterprise Value / Forward EBITDA Multiple	10
Market Comparables | Private Equity | High end of range | Technology
Level III investments and other financial instruments by valuation methodologies
Enterprise Value / LTM EBITDA Multiple	12
Enterprise Value / Forward EBITDA Multiple	12
Market Comparables | Private Equity | High end of range | Manufacturing
Level III investments and other financial instruments by valuation methodologies
Enterprise Value / LTM EBITDA Multiple	13
Enterprise Value / Forward EBITDA Multiple	12
Market Comparables | Private Equity | High end of range | Consumer Products
Level III investments and other financial instruments by valuation methodologies
Enterprise Value / LTM EBITDA Multiple	16
Enterprise Value / Forward EBITDA Multiple	12
Market Comparables | Private Equity | High end of range | Other
Level III investments and other financial instruments by valuation methodologies
Enterprise Value / LTM EBITDA Multiple	16
Enterprise Value / Forward EBITDA Multiple	13
Control Premium (as a percent)	20.00%
Discounted Cash Flows | Private Equity | Weighted Average | Health Care
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	8.00%
Enterprise Value / Exit Multiple LTM EBITDA	11
Discounted Cash Flows | Private Equity | Weighted Average | Retail
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	10.00%
Enterprise Value / Exit Multiple LTM EBITDA	7
Discounted Cash Flows | Private Equity | Weighted Average | Technology
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	11.00%
Enterprise Value / Exit Multiple LTM EBITDA	9
Discounted Cash Flows | Private Equity | Weighted Average | Manufacturing
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	12.00%
Enterprise Value / Exit Multiple LTM EBITDA	9
Discounted Cash Flows | Private Equity | Weighted Average | Consumer Products
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	11.00%
Enterprise Value / Exit Multiple LTM EBITDA	10
Discounted Cash Flows | Private Equity | Weighted Average | Other
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	10.00%
Enterprise Value / Exit Multiple LTM EBITDA	10
Discounted Cash Flows | Private Equity | Low end of range | Health Care
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	8.00%
Enterprise Value / Exit Multiple LTM EBITDA	9
Discounted Cash Flows | Private Equity | Low end of range | Retail
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	8.00%
Enterprise Value / Exit Multiple LTM EBITDA	6
Discounted Cash Flows | Private Equity | Low end of range | Technology
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	7.00%
Enterprise Value / Exit Multiple LTM EBITDA	6
Discounted Cash Flows | Private Equity | Low end of range | Manufacturing
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	10.00%
Enterprise Value / Exit Multiple LTM EBITDA	6
Discounted Cash Flows | Private Equity | Low end of range | Consumer Products
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	8.00%
Enterprise Value / Exit Multiple LTM EBITDA	6
Discounted Cash Flows | Private Equity | Low end of range | Other
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	8.00%
Enterprise Value / Exit Multiple LTM EBITDA	5
Discounted Cash Flows | Private Equity | High end of range | Health Care
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	10.00%
Enterprise Value / Exit Multiple LTM EBITDA	12
Discounted Cash Flows | Private Equity | High end of range | Retail
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	25.00%
Enterprise Value / Exit Multiple LTM EBITDA	8
Discounted Cash Flows | Private Equity | High end of range | Technology
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	14.00%
Enterprise Value / Exit Multiple LTM EBITDA	10
Discounted Cash Flows | Private Equity | High end of range | Manufacturing
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	19.00%
Enterprise Value / Exit Multiple LTM EBITDA	11
Discounted Cash Flows | Private Equity | High end of range | Consumer Products
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	21.00%
Enterprise Value / Exit Multiple LTM EBITDA	11
Discounted Cash Flows | Private Equity | High end of range | Other
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	18.00%
Enterprise Value / Exit Multiple LTM EBITDA	12
Discounted Cash Flows | Natural Resources/Infrastructure | Weighted Average
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	11.00%
Enterprise Value / Exit Multiple LTM EBITDA	8
Discounted Cash Flows | Natural Resources/Infrastructure | Low end of range
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	6.00%
Enterprise Value / Exit Multiple LTM EBITDA	7
Discounted Cash Flows | Natural Resources/Infrastructure | High end of range
Level III investments and other financial instruments by valuation methodologies
Weighted average cost of capital (as a percent)	22.00%
Enterprise Value / Exit Multiple LTM EBITDA	11
Discounted Cash Flows | Real Estate | Weighted Average
Level III investments and other financial instruments by valuation methodologies
Unlevered Discount Rate (as a percent)	15.00%
Discounted Cash Flows | Real Estate | Low end of range
Level III investments and other financial instruments by valuation methodologies
Unlevered Discount Rate (as a percent)	9.00%
Discounted Cash Flows | Real Estate | High end of range
Level III investments and other financial instruments by valuation methodologies
Unlevered Discount Rate (as a percent)	23.00%
Direct income capitalization | Real Estate | Weighted Average
Level III investments and other financial instruments by valuation methodologies
Capitalization Rate (as a percent)	8.00%
Direct income capitalization | Real Estate | Low end of range
Level III investments and other financial instruments by valuation methodologies
Capitalization Rate (as a percent)	7.00%
Direct income capitalization | Real Estate | High end of range
Level III investments and other financial instruments by valuation methodologies
Capitalization Rate (as a percent)	8.00%
Yield analysis | Fixed Income | Weighted Average
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	3.00%
Discount Margin (as a percent)	9.62%
Yield to maturity (as a percent)	7.00%
Net Leverage	4
Yield analysis | Fixed Income | Low end of range
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	1.00%
Discount Margin (as a percent)	6.50%
Yield to maturity (as a percent)	4.00%
Net Leverage	1
Yield analysis | Fixed Income | High end of range
Level III investments and other financial instruments by valuation methodologies
Illiquidity Discount (as a percent)	15.00%
Discount Margin (as a percent)	19.61%
Yield to maturity (as a percent)	20.00%
Net Leverage	11
Dealer quotes or third party fund managers | Fixed Income
Level III investments and other financial instruments by valuation methodologies
Fair Value	121,500,000