RELATED PARTY TRANSACTIONS (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Jun. 30, 2017	Mar. 31, 2020	Dec. 31, 2019
ARCC | American Capital Ltd.
Due to affiliates:
Maximum fees waived	$ 10,000,000.0	$ 10,000,000
Consolidated Funds
Due from affiliates:
Due from affiliates			$ 6,192,000	$ 6,192,000
Due to affiliates:
Due to affiliates			0	0
Consolidated Funds | Affiliated entity
Due from affiliates:
Due from affiliates			6,192,000	6,192,000
Ares Management L.P
Due from affiliates:
Due from affiliates			288,030,000	268,099,000
Due to affiliates:
Due to affiliates			73,050,000	71,445,000
Ares Management L.P | Affiliated entity
Due from affiliates:
Management fees receivable from non-consolidated funds			211,887,000	203,554,000
Payments made on behalf of and amounts due from non-consolidated funds and employees			76,143,000	64,545,000
Due to affiliates:
Management fee rebate payable to non-consolidated funds			2,893,000	2,420,000
Management fees received in advance			6,100,000	3,012,000
Tax receivable agreement liability			33,694,000	26,542,000
Undistributed carried interest and incentive fees			17,459,000	28,086,000
Payments made by non-consolidated funds on behalf of and payable by the Company			$ 12,904,000	$ 11,385,000