DERIVATIVES AND HEDGING - Impact of Derivatives Held by Consolidated Funds on Income (Details) - Not Designated as Hedging Instrument - Consolidated Funds - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Derivatives, Fair Value [Line Items]
Net Realized Gain (Loss) on Investments	$ 2,945	$ (851)
Net Change in Unrealized Appreciation (Depreciation) on Investments	(27,064)	3,809
Foreign-currency forward contracts
Derivatives, Fair Value [Line Items]
Net Realized Gain (Loss) on Investments	956	(1,373)
Net Change in Unrealized Appreciation (Depreciation) on Investments	2,928	2,706
Total-return and interest-rate and credit default swaps
Derivatives, Fair Value [Line Items]
Net Realized Gain (Loss) on Investments	(3,984)	0
Net Change in Unrealized Appreciation (Depreciation) on Investments	(32,833)	(34)
Options and futures
Derivatives, Fair Value [Line Items]
Net Realized Gain (Loss) on Investments	5,973	522
Net Change in Unrealized Appreciation (Depreciation) on Investments	1,983	199
Warrants
Derivatives, Fair Value [Line Items]
Net Realized Gain (Loss) on Investments	0	0
Net Change in Unrealized Appreciation (Depreciation) on Investments	$ 858	$ 938

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959

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No definition available.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

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