INVESTMENTS (Investments of the Consolidated Funds) (Details) - Consolidated Funds - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Investments
Total investments	$ 10,604,856	$ 8,727,947
Percent of total assets	5.00%	5.00%
Fixed Income Securities
Investments
Total investments	$ 10,248,425	$ 8,319,551
Percentage of total investments as of	96.70%	95.30%
Fixed Income Securities \| Bonds
Investments
Total investments	$ 331,228	$ 212,376
Percentage of total investments as of	3.20%	2.40%
Fixed Income Securities \| Loans
Investments
Total investments	$ 9,917,197	$ 8,062,740
Percentage of total investments as of	93.50%	92.40%
Fixed Income Securities \| Investments in CLO warehouse
Investments
Total investments	$ 0	$ 44,435
Percentage of total investments as of	0.00%	0.50%
Equity Securities
Investments
Total investments	$ 47,197	$ 112,384
Percentage of total investments as of	0.40%	1.30%
Partnership Interests
Investments
Total investments	$ 309,234	$ 296,012
Percentage of total investments as of	2.90%	3.40%

Percent by which the fair value of a single issuer or investment exceeds the entity's total consolidated net assets. This is used as a threshold for a count of such issuers or investments at balance sheet date.

No definition available.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Percent of net assets at close of period. For schedules of investments that are categorized, each category has a percent of net assets for the aggregated value of the Investments in the category.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column D))
-URI http://asc.fasb.org/extlink&oid=120401592&loc=d3e611197-123010

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=99383244&loc=d3e12121-115841

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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