INCOME TAXES (Provision for Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
Total current income tax expense (benefit)	$ 44,525	$ 27,903	$ (15,477)
Deferred:
Total deferred income tax expense (benefit)	7,851	4,299	(7,575)
Total:
Income tax expense (benefit)	52,376	32,202	(23,052)
Pro Forma
Current:
Total current income tax expense (benefit)			11,225
Deferred:
Total deferred income tax expense (benefit)			15,881
Total:
Income tax expense (benefit)			27,106
Ares Management L.P
Current:
U.S. federal income tax expense (benefit)	32,012	16,859	(21,559)
State and local income tax expense	6,940	4,306	454
Foreign income tax expense	6,103	6,607	3,741
Total current income tax expense (benefit)	45,055	27,772	(17,364)
Deferred:
U.S. federal income tax expense (benefit)	8,820	10,572	(3,466)
State and local income tax expense (benefit)	1,001	(4,789)	(2,414)
Foreign income tax benefit	(1,970)	(1,484)	(1,695)
Total deferred income tax expense (benefit)	7,851	4,299	(7,575)
Total:
U.S. federal income tax expense (benefit)	40,832	27,431	(25,025)
State and local income tax expense (benefit)	7,941	(483)	(1,960)
Foreign income tax expense	4,133	5,123	2,046
Income tax expense (benefit)	52,906	32,071	(24,939)
Ares Management L.P | Pro Forma
Current:
U.S. federal income tax expense (benefit)			2,634
State and local income tax expense			2,963
Foreign income tax expense			3,741
Total current income tax expense (benefit)			9,338
Deferred:
U.S. federal income tax expense (benefit)			18,297
State and local income tax expense (benefit)			(721)
Foreign income tax benefit			(1,695)
Total deferred income tax expense (benefit)			15,881
Total:
U.S. federal income tax expense (benefit)			20,931
State and local income tax expense (benefit)			2,242
Foreign income tax expense			2,046
Income tax expense (benefit)			25,219
Consolidated Funds
Current:
Foreign income tax expense	(530)	131	1,887
Total current income tax expense (benefit)	$ (530)	$ 131	1,887
Consolidated Funds | Pro Forma
Current:
Foreign income tax expense			1,887
Total current income tax expense (benefit)			$ 1,887