INVESTMENTS - Fair Value Investments, excluding Equity Method Investments Held at Fair Value (Details) - Ares Management L.P - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Investments
Partnership interests	$ 8,618	$ 3,784
Collateralized loan obligations	32,724	31,766
Other fixed income	172,732	146,552
Common stock, at fair value	109,807	89,419
Total investments	$ 3,322,665	$ 1,682,759
Percentage of total investments	1.00%	1.90%
Crestline Denali Class B Interests
Investments
Collateralized loan obligations	$ 3,200	$ 3,400
Partnership Interests
Investments
Equity method investments:	$ 3,266,948	$ 1,628,403
Percentage of total investments	98.30%	96.80%
Other fixed income
Investments
Other fixed income	$ 21,583	$ 21,583
Percentage of total investments	0.60%	1.30%
Collateralized loan obligations and other fixed income, at fair value
Investments
Collateralized loan obligations	$ 54,307	$ 53,349
Percentage of total investments	1.60%	3.20%
Common stock, at fair value
Investments
Common stock, at fair value	$ 1,410	$ 1,007
Percentage of total investments	0.10%	0.10%
Partnership Interests
Investments
Equity method investments:	$ 492,482	$ 366,471
Percentage of total investments	14.80%	21.80%
Equity method - carried interest
Investments
Equity method investments:	$ 2,625,319	$ 1,145,853
Percentage of total investments	79.00%	68.10%
Equity method private investment partnership interests and other (held at fair value)
Investments
Equity method investments:	$ 117,015	$ 92,196
Percentage of total investments	3.50%	5.50%
Equity method private investment partnership interests and other
Investments
Partnership interests	$ 32,132	$ 23,883
Percentage of total investments	1.00%	1.40%

Collateralized Loan Obligations, Fair Value

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Fair value of investment other than investment in equity security, investment in debt security and equity method investment. Includes, but is not limited to, investment in certain entities that calculate net asset value per share. Example includes, but is not limited to, investment in hedge fund, venture capital fund, private equity fund, and real estate partnership or fund.

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Fair value portion of investments accounted under the equity method.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

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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.

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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.

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Sum of the carrying amounts as of the balance sheet date of all investments.

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

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