FAIR VALUE - Consolidated Funds Summary of Valuation Techniques and Quantitative Information (Details) $ in Thousands	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Consolidated Funds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Real estate investments, at fair value	$ 85,305	$ 74,471
Investments, at fair value	4,210,578	3,908,613
Consolidated Funds | Level III(1)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, at fair value	2,667,194	2,390,273
Consolidated Funds | Level III(1) | Recent transaction price | Industrials
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value		4,527
Consolidated Funds | Level III(1) | Comparable Component Valuation Technique | Equity investments:
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value	27,347
Consolidated Funds | Level III(1) | Consumer discretionary | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value		16,062
Consolidated Funds | Level III(1) | Consumer discretionary | Recent transaction price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value		43,934
Consolidated Funds | Level III(1) | Consumer discretionary | Market approach (comparable companies)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value		293
Consolidated Funds | Level III(1) | Energy | Recent market information
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	2,254
Consolidated Funds | Level III(1) | Energy | Recent transaction price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	104,061	0
Consolidated Funds | Level III(1) | Energy | Market approach (comparable companies)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value		2,676
Consolidated Funds | Level III(1) | Financials | Recent market information
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	12,744	12,880
Consolidated Funds | Level III(1) | Financials | Recent transaction price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	670	$ 6,143
Consolidated Funds | Level III(1) | Financials | Market approach (comparable companies)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	$ 7,840
Credit-oriented investments, measurement inputs	1.0	1
Consolidated Funds | Level III(1) | Financials | Market approach (comparable companies) | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.9	0.9
Consolidated Funds | Level III(1) | Financials | Market approach (comparable companies) | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	1.0	1.0
Consolidated Funds | Level III(1) | Industrials | Recent market information
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	$ 0	$ 35,124
Consolidated Funds | Level III(1) | Industrials | Recent transaction price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	21,643
Consolidated Funds | Level III(1) | Materials | Recent market information
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value		0
Consolidated Funds | Level III(1) | Materials | Recent transaction price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	0	$ 0
Consolidated Funds | Level III(1) | Real estate | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	$ 4,735
Credit-oriented investments, measurement inputs	0.09	9
Consolidated Funds | Level III(1) | Real estate | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.09	0.09
Consolidated Funds | Level III(1) | Real estate | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.09	0.09
Consolidated Funds | Level III(1) | Real estate | Recent market information
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	$ 40,137	$ 35,525
Consolidated Funds | Level III(1) | Real estate | Recent transaction price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	106,581	32,173
Consolidated Funds | Level III(1) | Other: | Recent market information
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	(1,414)	(1,137)
Consolidated Funds | Level III(1) | Other: | Recent transaction price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	40,408	22,732
Consolidated Funds | Level III(1) | Equity investments: | Recent market information
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value	75,505	75,181
Consolidated Funds | Level III(1) | Equity investments: | Recent transaction price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value	108,463	74,329
Consolidated Funds | Level III(1) | Real estate-oriented investments | Recent transaction price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Real estate investments, at fair value	$ 14,637	7,695
Consolidated Funds | Level III(1) | Communication services | Recent market information
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value		0
Consolidated Funds | Level III(1) | Communication services | Recent transaction price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value		0
Revenue multiple | Consolidated Funds | Level III(1) | Equity investments: | Discounted cash flow / market approach (comparable companies) | Weighted Average | Equity Investment One
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	7.0
Revenue multiple | Consolidated Funds | Level III(1) | Equity investments: | Market approach (comparable companies)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value		$ 83,644
Revenue multiple | Consolidated Funds | Level III(1) | Equity investments: | Market approach (comparable companies) | Equity Investment One
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value	$ 310,874
Revenue multiple | Consolidated Funds | Level III(1) | Equity investments: | Market approach (comparable companies) | Equity Investment Two
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value	$ 70,365
Revenue multiple | Consolidated Funds | Level III(1) | Equity investments: | Market approach (comparable companies) | Minimum | Equity Investment One
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	6.0	20
Revenue multiple | Consolidated Funds | Level III(1) | Equity investments: | Market approach (comparable companies) | Minimum | Equity Investment Two
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	2.0	2
Revenue multiple | Consolidated Funds | Level III(1) | Equity investments: | Market approach (comparable companies) | Maximum | Equity Investment One
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	8.0	5
Revenue multiple | Consolidated Funds | Level III(1) | Equity investments: | Market approach (comparable companies) | Maximum | Equity Investment Two
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	4.0	1
Revenue multiple | Consolidated Funds | Level III(1) | Equity investments: | Market approach (comparable companies) | Weighted Average | Equity Investment One
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input		9
Revenue multiple | Consolidated Funds | Level III(1) | Equity investments: | Market approach (comparable companies) | Weighted Average | Equity Investment Two
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	3.0	1.81
Revenue multiple | Consolidated Funds | Level III(1) | Communication services | Market approach (comparable companies)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value		$ 67,500
Discount rate | Level III(1) | Discounted cash flow | Real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value		$ 3,643
Discount rate | Consolidated Funds | Level III(1) | Communication services | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs		0.12
Discount rate | Consolidated Funds | Level III(1) | Communication services | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs		0.13
Discount rate | Consolidated Funds | Level III(1) | Communication services | Discounted cash flow | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs		13
Discount rate | Consolidated Funds | Level III(1) | Consumer discretionary | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	$ 59,674
Discount rate | Consolidated Funds | Level III(1) | Consumer discretionary | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.13	0.12
Discount rate | Consolidated Funds | Level III(1) | Consumer discretionary | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.15	0.15
Discount rate | Consolidated Funds | Level III(1) | Consumer discretionary | Discounted cash flow | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	13	0.14
Discount rate | Consolidated Funds | Level III(1) | Consumer discretionary | Recent market information
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	$ 316
Discount rate | Consolidated Funds | Level III(1) | Energy | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	$ 32,282	$ 32,765
Discount rate | Consolidated Funds | Level III(1) | Energy | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.13	0.13
Discount rate | Consolidated Funds | Level III(1) | Energy | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.20	0.21
Discount rate | Consolidated Funds | Level III(1) | Energy | Discounted cash flow | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	18	0.18
Discount rate | Consolidated Funds | Level III(1) | Financials | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	$ 70,478	$ 66,204
Discount rate | Consolidated Funds | Level III(1) | Financials | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.12	0.12
Discount rate | Consolidated Funds | Level III(1) | Financials | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.42	0.19
Discount rate | Consolidated Funds | Level III(1) | Financials | Discounted cash flow | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	19	0.15
Discount rate | Consolidated Funds | Level III(1) | Industrials | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	$ 22,735	$ 9,875
Discount rate | Consolidated Funds | Level III(1) | Industrials | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.12	0.12
Discount rate | Consolidated Funds | Level III(1) | Industrials | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.16	0.15
Discount rate | Consolidated Funds | Level III(1) | Industrials | Discounted cash flow | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.13	0.14
Discount rate | Consolidated Funds | Level III(1) | Materials | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	$ 197,397	$ 197,427
Discount rate | Consolidated Funds | Level III(1) | Materials | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.10	0.10
Discount rate | Consolidated Funds | Level III(1) | Materials | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.14	0.14
Discount rate | Consolidated Funds | Level III(1) | Materials | Discounted cash flow | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.12	0.12
Discount rate | Consolidated Funds | Level III(1) | Real estate | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	$ 140,381
Discount rate | Consolidated Funds | Level III(1) | Real estate | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.10	0.10
Discount rate | Consolidated Funds | Level III(1) | Real estate | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.18	0.18
Discount rate | Consolidated Funds | Level III(1) | Real estate | Discounted cash flow | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	13	14
Discount rate | Consolidated Funds | Level III(1) | Equity investments: | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value	$ 220,395	$ 214,172
Discount rate | Consolidated Funds | Level III(1) | Equity investments: | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	0.12	0.21
Discount rate | Consolidated Funds | Level III(1) | Equity investments: | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	0.22	0.12
Discount rate | Consolidated Funds | Level III(1) | Equity investments: | Discounted cash flow | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	20	0.19
Discount rate | Consolidated Funds | Level III(1) | Equity investments: | Discounted cash flow / market approach (comparable companies)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value	$ 29,567
Equity securities, FV-NI, measurement input		14
Discount rate | Consolidated Funds | Level III(1) | Equity investments: | Discounted cash flow / market approach (comparable companies) | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	0.13	0.14
Discount rate | Consolidated Funds | Level III(1) | Equity investments: | Discounted cash flow / market approach (comparable companies) | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	0.13	0.14
Discount rate | Consolidated Funds | Level III(1) | Equity investments: | Discounted cash flow / market approach (comparable companies) | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	0.13
Discount rate | Consolidated Funds | Level III(1) | Real estate-oriented investments | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Real estate investments, at fair value	$ 70,669	$ 66,776
Discount rate | Consolidated Funds | Level III(1) | Real estate-oriented investments | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	0.23	0.14
Discount rate | Consolidated Funds | Level III(1) | Real estate-oriented investments | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	0.25	0.25
Discount rate | Consolidated Funds | Level III(1) | Real estate-oriented investments | Discounted cash flow | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	24	0.18
Multiple of underlying assets | Consolidated Funds | Level III(1) | Industrials | Market approach (comparable companies)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	$ 35,531
Multiple of underlying assets | Consolidated Funds | Level III(1) | Industrials | Market approach (comparable companies) | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.9	1.0
Multiple of underlying assets | Consolidated Funds | Level III(1) | Industrials | Market approach (comparable companies) | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	1.0	0.9
Multiple of underlying assets | Consolidated Funds | Level III(1) | Industrials | Market approach (comparable companies) | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	1.0	1
Multiple of underlying assets | Consolidated Funds | Level III(1) | Real estate | Market approach (comparable companies)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value	$ 291,026	$ 302,179
Multiple of underlying assets | Consolidated Funds | Level III(1) | Real estate | Market approach (comparable companies) | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.2	1.0
Multiple of underlying assets | Consolidated Funds | Level III(1) | Real estate | Market approach (comparable companies) | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	1.0	0.76
Multiple of underlying assets | Consolidated Funds | Level III(1) | Real estate | Market approach (comparable companies) | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, measurement inputs	0.9	0.95
Multiple of underlying assets | Consolidated Funds | Level III(1) | Other: | Market approach (comparable companies)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit-oriented investments, at fair value		$ 31,474
Multiple of underlying assets | Consolidated Funds | Level III(1) | Equity investments: | Market approach (comparable companies)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value	$ 577,240	$ 582,299
Multiple of underlying assets | Consolidated Funds | Level III(1) | Equity investments: | Market approach (comparable companies) | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	1.0	0.9
Multiple of underlying assets | Consolidated Funds | Level III(1) | Equity investments: | Market approach (comparable companies) | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	2.0	1.1
Multiple of underlying assets | Consolidated Funds | Level III(1) | Equity investments: | Market approach (comparable companies) | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	1.0	1
Earning Multiple | Consolidated Funds | Level III(1) | Equity investments: | Market approach (comparable companies)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments, at fair value		$ 336,831
Earning Multiple | Consolidated Funds | Level III(1) | Equity investments: | Market approach (comparable companies) | Minimum | Equity Investment One
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	5.0
Earning Multiple | Consolidated Funds | Level III(1) | Equity investments: | Market approach (comparable companies) | Maximum | Equity Investment One
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	20.0
Earning Multiple | Consolidated Funds | Level III(1) | Equity investments: | Market approach (comparable companies) | Weighted Average | Equity Investment One
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities, FV-NI, measurement input	8.5