FAIR VALUE - Consolidated Funds Summary of Valuation Techniques and Quantitative Information (Details) $ in Thousands	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Level III | Discounted cash flow | Real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value		$ 211,211
Consolidated Funds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Real estate investments, at fair value	$ 186,681	175,353
Investments, at fair value	5,771,776	5,143,677
Consolidated Funds | Level III
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, at fair value	3,675,138	3,603,942
Consolidated Funds | Level III | Discounted cash flow | Consumer discretionary
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	51,724	55,326
Real estate securities, fair value disclosure		61,357
Real estate investments, at fair value	60,800
Consolidated Funds | Level III | Discounted cash flow | Energy
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	67,564	15,873
Consolidated Funds | Level III | Discounted cash flow | Financials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	29,467	26,689
Consolidated Funds | Level III | Discounted cash flow | Industrials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	154,026	79,824
Consolidated Funds | Level III | Discounted cash flow | Materials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	366,923	306,319
Consolidated Funds | Level III | Discounted cash flow | Real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	204,909
Consolidated Funds | Level III | Discounted cash flow | Other:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	576,440	551,047
Consolidated Funds | Level III | Discounted cash flow | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value	98,616	102,981
Consolidated Funds | Level III | Discounted cash flow | Real estate-oriented investments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Real estate investments, at fair value	125,881	113,996
Consolidated Funds | Level III | Recent market information | Consumer discretionary
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	29,664	351
Consolidated Funds | Level III | Recent market information | Energy
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	2,282	2,325
Consolidated Funds | Level III | Recent market information | Financials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	30,929	26,102
Consolidated Funds | Level III | Recent market information | Industrials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	7,870	452
Consolidated Funds | Level III | Recent market information | Materials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	3,708	0
Consolidated Funds | Level III | Recent market information | Real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	36,477	37,419
Consolidated Funds | Level III | Recent market information | Other:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	7,668	4,316
Consolidated Funds | Level III | Recent market information | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value	24,831	14,102
Consolidated Funds | Level III | Recent transaction price | Consumer discretionary
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	29,434	11,311
Consolidated Funds | Level III | Recent transaction price | Energy
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value		69,871
Consolidated Funds | Level III | Recent transaction price | Financials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value		3,646
Consolidated Funds | Level III | Recent transaction price | Industrials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	4,160	51,788
Consolidated Funds | Level III | Recent transaction price | Materials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	67,056	193,614
Consolidated Funds | Level III | Recent transaction price | Real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	32,174	35,084
Consolidated Funds | Level III | Recent transaction price | Other:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	972	1,612
Consolidated Funds | Level III | Recent transaction price | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value	150,186	179,009
Consolidated Funds | Level III | Market approach (comparable companies) | Financials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	21,252	20,520
Consolidated Funds | Level III | Market approach (comparable companies) | Industrials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value		62,544
Consolidated Funds | Level III | Market approach (comparable companies) | Real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	186,479	193,771
Consolidated Funds | Level III | Market approach (comparable companies) | Other:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	24,390	1,345
Consolidated Funds | Level III | Market approach (comparable companies) | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value	840,279	60,841
Consolidated Funds | Level III | Market approach (comparable companies) | Equity Investment One | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value	372,859
Consolidated Funds | Level III | Market approach (comparable companies) | Equity Investment Two | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value	31,742
Consolidated Funds | Level III | Expected Recovery | Financials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	197
Consolidated Funds | Level III | Expected Recovery | Equity Investment Two | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value	10,731
Consolidated Funds | Level III | Discounted cash flow / market approach (comparable companies) | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value	22,364	$ 22,573
Consolidated Funds | Level III | Black Scholes | Equity Investment Two | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value	$ 1,084
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.15
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Minimum | Consumer discretionary
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.13	0.13
Real estate oriented, measurement input	20.00%	20.00%
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Minimum | Energy
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.18	0.14
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Minimum | Financials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.09	0.12
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Minimum | Industrials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.10	0.11
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Minimum | Materials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.10	0.10
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Minimum | Real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.04	0.13
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Minimum | Other:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.06	0.09
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Minimum | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	0.12	0.20
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Minimum | Real estate-oriented investments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Real estate oriented, measurement input	4.00%	4.00%
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Maximum | Consumer discretionary
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.17	0.17
Real estate oriented, measurement input	20.00%	20.00%
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Maximum | Energy
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.18	0.14
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Maximum | Financials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.15	0.15
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Maximum | Industrials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.15	0.15
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Maximum | Materials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.15	0.15
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Maximum | Real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.19	0.15
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Maximum | Other:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.19	0.19
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Maximum | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	0.18	0.12
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Maximum | Real estate-oriented investments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Real estate oriented, measurement input	23.00%	27.00%
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Weighted Average | Consumer discretionary
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	16	0.16
Real estate oriented, measurement input	20.00%	20.00%
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Weighted Average | Energy
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	18	0.14
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Weighted Average | Financials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	15	0.15
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Weighted Average | Industrials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.13	0.13
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Weighted Average | Materials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	13	0.12
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Weighted Average | Real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs		0.15
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Weighted Average | Other:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.17	0.18
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Weighted Average | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	0.15	0.15
Discount rate | Consolidated Funds | Level III | Discounted cash flow | Weighted Average | Real estate-oriented investments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Real estate oriented, measurement input	15.00%	14.00%
Discount rate | Consolidated Funds | Level III | Discounted cash flow / market approach (comparable companies) | Minimum | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	0.11	0.12
Discount rate | Consolidated Funds | Level III | Discounted cash flow / market approach (comparable companies) | Maximum | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	0.11	0.12
Discount rate | Consolidated Funds | Level III | Discounted cash flow / market approach (comparable companies) | Weighted Average | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	0.11	0.12
Multiple of underlying assets | Consolidated Funds | Level III | Market approach (comparable companies) | Financials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.9
Multiple of underlying assets | Consolidated Funds | Level III | Market approach (comparable companies) | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value		$ 670,215
Multiple of underlying assets | Consolidated Funds | Level III | Market approach (comparable companies) | Minimum | Financials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.5	0.5
Multiple of underlying assets | Consolidated Funds | Level III | Market approach (comparable companies) | Minimum | Real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	1.0	1.0
Multiple of underlying assets | Consolidated Funds | Level III | Market approach (comparable companies) | Minimum | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	0.5	0.9
Multiple of underlying assets | Consolidated Funds | Level III | Market approach (comparable companies) | Maximum | Financials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	1.0	1.0
Multiple of underlying assets | Consolidated Funds | Level III | Market approach (comparable companies) | Maximum | Real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	1.0	1.0
Multiple of underlying assets | Consolidated Funds | Level III | Market approach (comparable companies) | Maximum | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	1.0	1.0
Multiple of underlying assets | Consolidated Funds | Level III | Market approach (comparable companies) | Weighted Average | Financials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs		0.7
Multiple of underlying assets | Consolidated Funds | Level III | Market approach (comparable companies) | Weighted Average | Real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	1.0	1.0
Multiple of underlying assets | Consolidated Funds | Level III | Market approach (comparable companies) | Weighted Average | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	1.0	1.0
Earning Multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Other:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value		$ 19,820
Earning Multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value		$ 396,688
Earning Multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Minimum | Industrials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs		9.8
Earning Multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Minimum | Other:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	6.0	6.0
Earning Multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Minimum | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	6.0
Earning Multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Minimum | Equity Investment One | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input		11.0
Earning Multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Maximum | Industrials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs		9.8
Earning Multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Maximum | Other:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	9.0	6.0
Earning Multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Maximum | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	13.0
Earning Multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Maximum | Equity Investment One | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input		2.0
Earning Multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Weighted Average | Industrials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs		9.8
Earning Multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Weighted Average | Other:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	6.5	6.0
Earning Multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Weighted Average | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	9.4
Earning Multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Weighted Average | Equity Investment One | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input		8.5
Earning Multiple | Consolidated Funds | Level III | Discounted cash flow / market approach (comparable companies) | Minimum | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	10.0
Earning Multiple | Consolidated Funds | Level III | Discounted cash flow / market approach (comparable companies) | Maximum | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	12.0
Earning Multiple | Consolidated Funds | Level III | Discounted cash flow / market approach (comparable companies) | Weighted Average | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	11.0
Revenue multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Minimum | Other:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs		0.3
Revenue multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Minimum | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	2.0
Revenue multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Minimum | Equity Investment Two | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input		2.0
Revenue multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Maximum | Other:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs		0.3
Revenue multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Maximum | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	2.0
Revenue multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Maximum | Equity Investment Two | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input		1.0
Revenue multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Weighted Average | Other:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs		0.3
Revenue multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Weighted Average | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	2.0
Revenue multiple | Consolidated Funds | Level III | Market approach (comparable companies) | Weighted Average | Equity Investment Two | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input		1.5
Revenue multiple | Consolidated Funds | Level III | Discounted cash flow / market approach (comparable companies) | Minimum | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input		9.0
Revenue multiple | Consolidated Funds | Level III | Discounted cash flow / market approach (comparable companies) | Maximum | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input		11.0
Revenue multiple | Consolidated Funds | Level III | Discounted cash flow / market approach (comparable companies) | Weighted Average | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input		10.0