FAIR VALUE - Consolidated Funds Summary of Valuation Techniques and Quantitative Information (Detail) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2016 USD ($) investment	Jun. 30, 2015 investment	Dec. 31, 2015 USD ($)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value	$ 3,302,188		$ 45,179,906
Number of investments that changed valuation technique | investment		8
Credit-oriented investments: | Market approach (comparable companies) | Value Of Company's Underlying Assets
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Number of investments that changed valuation technique | investment	1	3
Credit-oriented investments: | Market approach (comparable companies) | Recent market information
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Number of investments that changed valuation technique | investment		1
Credit-oriented investments: | Discounted cash flow / Sales approach | Discounted cash flow
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Number of investments that changed valuation technique | investment		1
Equity securities: | Market approach (comparable companies) | Value Of Company's Underlying Assets
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Number of investments that changed valuation technique | investment		1
Real estate-oriented investments: | Discounted cash flow | Offers From Potential Buyers
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Number of investments that changed valuation technique | investment		1
Real estate-oriented investments: | Market approach (comparable companies) | Stabilization of Underlying Investments
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Number of investments that changed valuation technique | investment		1
Consolidated Funds
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value	$ 3,302,188		45,179,906
Consolidated Funds | Level III
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value	195,773		27,217,707
Consolidated Funds | Level III | Credit-oriented investments: | Consumer discretionary | Discounted cash flow
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value	$ 2,564		$ 289,107
Consolidated Funds | Level III | Credit-oriented investments: | Consumer discretionary | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)	12.00%		5.00%
Consolidated Funds | Level III | Credit-oriented investments: | Consumer discretionary | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)	15.00%		15.00%
Consolidated Funds | Level III | Credit-oriented investments: | Consumer discretionary | Discounted cash flow | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)	13.00%		12.00%
Consolidated Funds | Level III | Credit-oriented investments: | Consumer discretionary | Market approach (comparable companies)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 451,584
Consolidated Funds | Level III | Credit-oriented investments: | Consumer discretionary | Market approach (comparable companies) | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			3
Consolidated Funds | Level III | Credit-oriented investments: | Consumer discretionary | Market approach (comparable companies) | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			10
Consolidated Funds | Level III | Credit-oriented investments: | Consumer discretionary | Market approach (comparable companies) | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			6
Consolidated Funds | Level III | Credit-oriented investments: | Consumer discretionary | Recent transaction price
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 232,995
Consolidated Funds | Level III | Credit-oriented investments: | Consumer discretionary | Recent market information
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value	$ 36,217		156,160
Consolidated Funds | Level III | Credit-oriented investments: | Financials | Discounted cash flow
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value	$ 2,503		$ 595,066
Consolidated Funds | Level III | Credit-oriented investments: | Financials | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)	15.00%		6.00%
Consolidated Funds | Level III | Credit-oriented investments: | Financials | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)	17.00%		14.00%
Consolidated Funds | Level III | Credit-oriented investments: | Financials | Discounted cash flow | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)	16.00%		11.00%
Consolidated Funds | Level III | Credit-oriented investments: | Financials | Recent transaction price
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 232,958
Consolidated Funds | Level III | Credit-oriented investments: | Financials | Recent market information
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value	$ 21,341		241,667
Consolidated Funds | Level III | Credit-oriented investments: | Financials | Market approach (value of underlying assets)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 259,669
Consolidated Funds | Level III | Credit-oriented investments: | Financials | Market approach (value of underlying assets) | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Underlying asset multiple			1.1
Consolidated Funds | Level III | Credit-oriented investments: | Financials | Market approach (value of underlying assets) | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Underlying asset multiple			1.5
Consolidated Funds | Level III | Credit-oriented investments: | Financials | Market approach (value of underlying assets) | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Underlying asset multiple			1.2
Consolidated Funds | Level III | Credit-oriented investments: | Industrials | Discounted cash flow
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value	$ 30,458		$ 135,808
Consolidated Funds | Level III | Credit-oriented investments: | Industrials | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)	5.00%		5.00%
Consolidated Funds | Level III | Credit-oriented investments: | Industrials | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)	16.00%		15.00%
Consolidated Funds | Level III | Credit-oriented investments: | Industrials | Discounted cash flow | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)	7.00%		13.00%
Consolidated Funds | Level III | Credit-oriented investments: | Industrials | Market approach (comparable companies)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 7,549
Consolidated Funds | Level III | Credit-oriented investments: | Industrials | Market approach (comparable companies) | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			5
Consolidated Funds | Level III | Credit-oriented investments: | Industrials | Market approach (comparable companies) | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			9
Consolidated Funds | Level III | Credit-oriented investments: | Industrials | Market approach (comparable companies) | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			7
Consolidated Funds | Level III | Credit-oriented investments: | Industrials | Recent transaction price
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 45,647
Consolidated Funds | Level III | Credit-oriented investments: | Industrials | Recent market information
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value	$ 38,727		24,247
Consolidated Funds | Level III | Credit-oriented investments: | Industrials | Market approach (value of underlying assets)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 219,121
Consolidated Funds | Level III | Credit-oriented investments: | Industrials | Market approach (value of underlying assets) | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Underlying asset multiple			0.7
Consolidated Funds | Level III | Credit-oriented investments: | Industrials | Market approach (value of underlying assets) | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Underlying asset multiple			1.0
Consolidated Funds | Level III | Credit-oriented investments: | Industrials | Market approach (value of underlying assets) | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Underlying asset multiple			0.9
Consolidated Funds | Level III | Credit-oriented investments: | Industrials | Discounted cash flow / Sales approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 55,310
Consolidated Funds | Level III | Credit-oriented investments: | Industrials | Discounted cash flow / Sales approach | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate / Market transactions (as a percent)			9.00%
Consolidated Funds | Level III | Credit-oriented investments: | Industrials | Discounted cash flow / Sales approach | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate / Market transactions (as a percent)			11.00%
Consolidated Funds | Level III | Credit-oriented investments: | Industrials | Discounted cash flow / Sales approach | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate / Market transactions (as a percent)			10.00%
Consolidated Funds | Level III | Credit-oriented investments: | Materials | Discounted cash flow
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 417,749
Consolidated Funds | Level III | Credit-oriented investments: | Materials | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)			11.00%
Consolidated Funds | Level III | Credit-oriented investments: | Materials | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)			14.00%
Consolidated Funds | Level III | Credit-oriented investments: | Materials | Discounted cash flow | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)			14.00%
Consolidated Funds | Level III | Credit-oriented investments: | Materials | Market approach (comparable companies)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 128,230
Consolidated Funds | Level III | Credit-oriented investments: | Materials | Market approach (comparable companies) | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			7
Consolidated Funds | Level III | Credit-oriented investments: | Materials | Market approach (comparable companies) | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			9
Consolidated Funds | Level III | Credit-oriented investments: | Materials | Market approach (comparable companies) | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			8
Consolidated Funds | Level III | Credit-oriented investments: | Materials | Recent transaction price
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 3,938
Consolidated Funds | Level III | Credit-oriented investments: | Materials | Recent market information
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			71,174
Consolidated Funds | Level III | Credit-oriented investments: | Consumer staples | Discounted cash flow
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value	$ 6,221
Consolidated Funds | Level III | Credit-oriented investments: | Consumer staples | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)	5.00%
Consolidated Funds | Level III | Credit-oriented investments: | Consumer staples | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)	7.00%
Consolidated Funds | Level III | Credit-oriented investments: | Consumer staples | Discounted cash flow | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)	6.00%
Consolidated Funds | Level III | Credit-oriented investments: | Consumer staples | Recent market information
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value	$ 19,042
Consolidated Funds | Level III | Credit-oriented investments: | Other | Discounted cash flow
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value	$ 11,913		$ 442,797
Consolidated Funds | Level III | Credit-oriented investments: | Other | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)	9.00%		5.00%
Consolidated Funds | Level III | Credit-oriented investments: | Other | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)	27.00%		20.00%
Consolidated Funds | Level III | Credit-oriented investments: | Other | Discounted cash flow | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)	12.00%		12.00%
Consolidated Funds | Level III | Credit-oriented investments: | Other | Market approach (comparable companies)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value	$ 2,771
Consolidated Funds | Level III | Credit-oriented investments: | Other | Market approach (comparable companies) | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple	7
Consolidated Funds | Level III | Credit-oriented investments: | Other | Market approach (comparable companies) | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple	9
Consolidated Funds | Level III | Credit-oriented investments: | Other | Market approach (comparable companies) | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple	8
Consolidated Funds | Level III | Credit-oriented investments: | Other | Recent transaction price
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 60,643
Consolidated Funds | Level III | Credit-oriented investments: | Other | Recent market information
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value	$ 20,042		331,485
Consolidated Funds | Level III | Credit-oriented investments: | Information technology | Discounted cash flow
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 199,841
Consolidated Funds | Level III | Credit-oriented investments: | Information technology | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)			6.00%
Consolidated Funds | Level III | Credit-oriented investments: | Information technology | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)			13.00%
Consolidated Funds | Level III | Credit-oriented investments: | Information technology | Discounted cash flow | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)			12.00%
Consolidated Funds | Level III | Credit-oriented investments: | Information technology | Market approach (comparable companies)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 143,596
Consolidated Funds | Level III | Credit-oriented investments: | Information technology | Market approach (comparable companies) | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			6
Consolidated Funds | Level III | Credit-oriented investments: | Information technology | Market approach (comparable companies) | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			8
Consolidated Funds | Level III | Credit-oriented investments: | Information technology | Market approach (comparable companies) | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			7
Consolidated Funds | Level III | Credit-oriented investments: | Information technology | Recent transaction price
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 63,594
Consolidated Funds | Level III | Credit-oriented investments: | Information technology | Recent market information
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			62,353
Consolidated Funds | Level III | Equity securities: | Market approach (comparable companies)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value	$ 601
Consolidated Funds | Level III | Equity securities: | Market approach (comparable companies) | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple	4
Consolidated Funds | Level III | Equity securities: | Market approach (comparable companies) | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple	13
Consolidated Funds | Level III | Equity securities: | Market approach (comparable companies) | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple	6
Consolidated Funds | Level III | Equity securities: | Recent market information
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value	$ 3,373
Consolidated Funds | Level III | Equity securities: | Financials | Discounted cash flow
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 58,352
Consolidated Funds | Level III | Equity securities: | Financials | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)			14.00%
Consolidated Funds | Level III | Equity securities: | Financials | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)			16.00%
Consolidated Funds | Level III | Equity securities: | Financials | Discounted cash flow | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)			15.00%
Consolidated Funds | Level III | Equity securities: | Financials | Recent transaction price
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 189,714
Consolidated Funds | Level III | Equity securities: | Financials | Market approach (value of underlying assets)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 1,029,904
Consolidated Funds | Level III | Equity securities: | Financials | Market approach (value of underlying assets) | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Underlying asset multiple			1.0
Consolidated Funds | Level III | Equity securities: | Financials | Market approach (value of underlying assets) | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Underlying asset multiple			1.5
Consolidated Funds | Level III | Equity securities: | Financials | Market approach (value of underlying assets) | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Underlying asset multiple			1.4
Consolidated Funds | Level III | Equity securities: | Industrials | Discounted cash flow
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 37,130
Consolidated Funds | Level III | Equity securities: | Industrials | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)			10.00%
Consolidated Funds | Level III | Equity securities: | Industrials | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)			12.00%
Consolidated Funds | Level III | Equity securities: | Industrials | Discounted cash flow | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)			11.00%
Consolidated Funds | Level III | Equity securities: | Industrials | Market approach (comparable companies)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 2,385,995
Consolidated Funds | Level III | Equity securities: | Industrials | Market approach (comparable companies) | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			5
Consolidated Funds | Level III | Equity securities: | Industrials | Market approach (comparable companies) | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			18
Consolidated Funds | Level III | Equity securities: | Industrials | Market approach (comparable companies) | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			9
Consolidated Funds | Level III | Equity securities: | Industrials | Recent transaction price
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 248,894
Consolidated Funds | Level III | Equity securities: | Industrials | Recent market information
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			53,005
Consolidated Funds | Level III | Equity securities: | Industrials | Market approach (value of underlying assets)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 1,287,791
Consolidated Funds | Level III | Equity securities: | Industrials | Market approach (value of underlying assets) | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Underlying asset multiple			0.9
Consolidated Funds | Level III | Equity securities: | Industrials | Market approach (value of underlying assets) | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Underlying asset multiple			1.0
Consolidated Funds | Level III | Equity securities: | Industrials | Market approach (value of underlying assets) | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Underlying asset multiple			1.0
Consolidated Funds | Level III | Equity securities: | Materials | Market approach (comparable companies)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 1,238,760
Consolidated Funds | Level III | Equity securities: | Materials | Market approach (comparable companies) | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			7
Consolidated Funds | Level III | Equity securities: | Materials | Market approach (comparable companies) | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			9
Consolidated Funds | Level III | Equity securities: | Materials | Market approach (comparable companies) | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			8
Consolidated Funds | Level III | Equity securities: | Materials | Recent transaction price
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 25,133
Consolidated Funds | Level III | Equity securities: | Other | Market approach (comparable companies)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 1,898,334
Consolidated Funds | Level III | Equity securities: | Other | Market approach (comparable companies) | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			6
Consolidated Funds | Level III | Equity securities: | Other | Market approach (comparable companies) | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			18
Consolidated Funds | Level III | Equity securities: | Other | Market approach (comparable companies) | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			10
Consolidated Funds | Level III | Equity securities: | Other | Recent transaction price
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 221,350
Consolidated Funds | Level III | Equity securities: | Other | Recent market information
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			171,463
Consolidated Funds | Level III | Equity securities: | Other | Market approach (value of underlying assets)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 164,026
Consolidated Funds | Level III | Equity securities: | Other | Market approach (value of underlying assets) | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Underlying asset multiple			1.1
Consolidated Funds | Level III | Equity securities: | Other | Market approach (value of underlying assets) | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Underlying asset multiple			1.3
Consolidated Funds | Level III | Equity securities: | Other | Market approach (value of underlying assets) | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Underlying asset multiple			1.2
Consolidated Funds | Level III | Equity securities: | Utilities | Market approach (comparable companies)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 616,596
Consolidated Funds | Level III | Equity securities: | Utilities | Market approach (comparable companies) | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			8
Consolidated Funds | Level III | Equity securities: | Utilities | Market approach (comparable companies) | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			11
Consolidated Funds | Level III | Equity securities: | Utilities | Market approach (comparable companies) | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			9
Consolidated Funds | Level III | Equity securities: | Utilities | Recent transaction price
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 200,112
Consolidated Funds | Level III | Equity securities: | Utilities | Other
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			266,185
Consolidated Funds | Level III | Real estate-oriented investments: | Discounted cash flow
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 3,863,639
Consolidated Funds | Level III | Real estate-oriented investments: | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)			6.00%
Consolidated Funds | Level III | Real estate-oriented investments: | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)			44.00%
Consolidated Funds | Level III | Real estate-oriented investments: | Discounted cash flow | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)			13.00%
Consolidated Funds | Level III | Real estate-oriented investments: | Terminal Capitalization Rate Valuation Technique | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Terminal capitalization rate (as a percent)			0.05
Consolidated Funds | Level III | Real estate-oriented investments: | Terminal Capitalization Rate Valuation Technique | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Terminal capitalization rate (as a percent)			0.10
Consolidated Funds | Level III | Real estate-oriented investments: | Terminal Capitalization Rate Valuation Technique | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Terminal capitalization rate (as a percent)			0.07
Consolidated Funds | Level III | Real estate-oriented investments: | Direct Capitalization Rate Valuation Technique | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Direct capitalization rate (as a percent)			0.05
Consolidated Funds | Level III | Real estate-oriented investments: | Direct Capitalization Rate Valuation Technique | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Direct capitalization rate (as a percent)			0.10
Consolidated Funds | Level III | Real estate-oriented investments: | Direct Capitalization Rate Valuation Technique | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Direct capitalization rate (as a percent)			0.07
Consolidated Funds | Level III | Real estate-oriented investments: | Net Operating Income Growth Rate Valuation Technique | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Net operating income growth rate (as a percent)			0.00%
Consolidated Funds | Level III | Real estate-oriented investments: | Net Operating Income Growth Rate Valuation Technique | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Net operating income growth rate (as a percent)			38.00%
Consolidated Funds | Level III | Real estate-oriented investments: | Net Operating Income Growth Rate Valuation Technique | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Net operating income growth rate (as a percent)			10.00%
Consolidated Funds | Level III | Real estate-oriented investments: | Absorption Rate Valuation Technique | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Absorption rate (as a percent)			25.00%
Consolidated Funds | Level III | Real estate-oriented investments: | Absorption Rate Valuation Technique | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Absorption rate (as a percent)			44.00%
Consolidated Funds | Level III | Real estate-oriented investments: | Absorption Rate Valuation Technique | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Absorption rate (as a percent)			30.00%
Consolidated Funds | Level III | Real estate-oriented investments: | Market approach (comparable companies)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 218,817
Consolidated Funds | Level III | Real estate-oriented investments: | Market approach (comparable companies) | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			9
Consolidated Funds | Level III | Real estate-oriented investments: | Market approach (comparable companies) | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			11
Consolidated Funds | Level III | Real estate-oriented investments: | Market approach (comparable companies) | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Earnings multiple			11
Consolidated Funds | Level III | Real estate-oriented investments: | Recent transaction price
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 512,120
Consolidated Funds | Level III | Real estate-oriented investments: | Sales approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			1,385,418
Consolidated Funds | Level III | Real estate-oriented investments: | Recent market information
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 2,385,895
Consolidated Funds | Level III | Real estate-oriented investments: | Recent market information | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Quoted prices / discount (as a percent)			0.00%
Consolidated Funds | Level III | Real estate-oriented investments: | Recent market information | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Quoted prices / discount (as a percent)			5.00%
Consolidated Funds | Level III | Real estate-oriented investments: | Recent market information | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Quoted prices / discount (as a percent)			3.00%
Consolidated Funds | Level III | Real estate-oriented investments: | Market approach (value of underlying assets)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 992,695
Consolidated Funds | Level III | Real estate-oriented investments: | Market approach (value of underlying assets) | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Underlying asset multiple			1
Consolidated Funds | Level III | Real estate-oriented investments: | Market approach (value of underlying assets) | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Underlying asset multiple			1.8
Consolidated Funds | Level III | Real estate-oriented investments: | Market approach (value of underlying assets) | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Underlying asset multiple			1.6
Consolidated Funds | Level III | Real estate-oriented investments: | Other
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 164,046
Consolidated Funds | Level III | Real estate-oriented investments: | Discounted cash flow / Sales approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 132,640
Consolidated Funds | Level III | Real estate-oriented investments: | Discounted cash flow / Sales approach | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate / Market transactions (as a percent)			6.00%
Consolidated Funds | Level III | Real estate-oriented investments: | Discounted cash flow / Sales approach | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate / Market transactions (as a percent)			8.00%
Consolidated Funds | Level III | Real estate-oriented investments: | Discounted cash flow / Sales approach | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate / Market transactions (as a percent)			7.00%
Consolidated Funds | Level III | Real estate loan portfolios | Discounted cash flow
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 2,101,463
Consolidated Funds | Level III | Real estate loan portfolios | Discounted cash flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)			7.00%
Consolidated Funds | Level III | Real estate loan portfolios | Discounted cash flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)			23.00%
Consolidated Funds | Level III | Real estate loan portfolios | Discounted cash flow | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate (as a percent)			13.00%
Consolidated Funds | Level III | Real estate loan portfolios | Recent transaction price
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total investments, at fair value			$ 495,942