FAIR VALUE (Valuation Techniques) (Details) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)
Ares Management L.P
FAIR VALUE
Assets, at fair value	$ 582,924	$ 451,507
Liabilities, at fair value	4,194	22,156
Ares Management L.P | Level III
FAIR VALUE
Assets, at fair value	198,700	122,521
Liabilities, at fair value	0	22,156
Ares Management L.P | Level III | Liabilities | Other Valuation Technique
FAIR VALUE
Liabilities, at fair value		20,278
Ares Management L.P | Level III | Liabilities | Discounted cash flow
FAIR VALUE
Liabilities, at fair value		$ 1,878
Unobservable Input
Discount rate		6.50%
Ares Management L.P | Level III | Partnership interests | Other Valuation Technique
FAIR VALUE
Assets, at fair value	36,439	$ 33,410
Ares Management L.P | Level III | Fixed income-collateralized loan obligations | Broker quotes and/or 3rd party pricing services
FAIR VALUE
Assets, at fair value	162,261	89,111
Consolidated Funds
FAIR VALUE
Assets, at fair value	4,916,357	3,331,023
Liabilities, at fair value	4,476,844	3,034,111
Consolidated Funds | Level III
FAIR VALUE
Assets, at fair value	701,772	544,930
Liabilities, at fair value	201	2,999
Consolidated Funds | Level III | Derivatives liabilities of Consolidated Funds | Broker quotes and/or 3rd party pricing services
FAIR VALUE
Liabilities, at fair value	201	2,999
Consolidated Funds | Level III | Equity securities | Broker quotes and/or 3rd party pricing services
FAIR VALUE
Assets, at fair value		421
Consolidated Funds | Level III | Equity securities | Discounted cash flow
FAIR VALUE
Assets, at fair value	$ 224,010	$ 171,696
Unobservable Input
Discount rate	18.50%	20.00%
Consolidated Funds | Level III | Equity securities | Discounted cash flow | Weighted Average
Unobservable Input
Discount rate	18.50%	20.00%
Consolidated Funds | Level III | Equity securities | Enterprise value market multiple analysis
FAIR VALUE
Assets, at fair value	$ 57,562	$ 43,011
Unobservable Input
EBITDA multiple	2.8
Consolidated Funds | Level III | Equity securities | Enterprise value market multiple analysis | Minimum
Unobservable Input
EBITDA multiple		2.0
Consolidated Funds | Level III | Equity securities | Enterprise value market multiple analysis | Maximum
Unobservable Input
EBITDA multiple		11.2
Consolidated Funds | Level III | Equity securities | Enterprise value market multiple analysis | Weighted Average
Unobservable Input
EBITDA multiple	2.8	2.3
Consolidated Funds | Level III | Equity securities | Market approach (comparable companies)
FAIR VALUE
Assets, at fair value	$ 61,215	$ 32,598
Unobservable Input
Illiquidity discount (as a percent)		25.00%
Consolidated Funds | Level III | Equity securities | Market approach (comparable companies) | Minimum
Unobservable Input
Net income multiple	30.0	30.0
Illiquidity discount (as a percent)	25.00%
Consolidated Funds | Level III | Equity securities | Market approach (comparable companies) | Maximum
Unobservable Input
Net income multiple	45.0	40.0
Consolidated Funds | Level III | Equity securities | Market approach (comparable companies) | Weighted Average
Unobservable Input
Net income multiple	34.7	35.0
Illiquidity discount (as a percent)	25.00%	25.00%
Consolidated Funds | Level III | Equity securities | Recent transaction price
FAIR VALUE
Assets, at fair value	$ 38,081	$ 54,660
Consolidated Funds | Level III | Fixed Income | Broker quotes and/or 3rd party pricing services
FAIR VALUE
Assets, at fair value	238,764	170,231
Consolidated Funds | Level III | Fixed Income | Discounted cash flow
FAIR VALUE
Assets, at fair value		$ 24,052
Consolidated Funds | Level III | Fixed Income | Discounted cash flow | Minimum
Unobservable Input
Discount rate		7.80%
Consolidated Funds | Level III | Fixed Income | Discounted cash flow | Maximum
Unobservable Input
Discount rate		15.30%
Consolidated Funds | Level III | Fixed Income | Discounted cash flow | Weighted Average
Unobservable Input
Discount rate		11.10%
Consolidated Funds | Level III | Fixed Income | Enterprise value market multiple analysis
FAIR VALUE
Assets, at fair value		$ 6,693
Unobservable Input
EBITDA multiple		7.1
Consolidated Funds | Level III | Fixed Income | Enterprise value market multiple analysis | Weighted Average
Unobservable Input
EBITDA multiple		7.1
Consolidated Funds | Level III | Fixed Income | Market approach (comparable companies)
FAIR VALUE
Assets, at fair value	$ 222	$ 1,776
Unobservable Input
EBITDA multiple	5.6	6.5
Consolidated Funds | Level III | Fixed Income | Market approach (comparable companies) | Weighted Average
Unobservable Input
EBITDA multiple	5.6	6.5
Consolidated Funds | Level III | Fixed Income | Recent transaction price
FAIR VALUE
Assets, at fair value		$ 4,887
Consolidated Funds | Level III | Fixed Income | Income approach, Yield
FAIR VALUE
Assets, at fair value	$ 80,590	$ 28,595
Consolidated Funds | Level III | Fixed Income | Income approach, Yield | Minimum
Unobservable Input
Yield	4.90%	6.00%
Consolidated Funds | Level III | Fixed Income | Income approach, Yield | Maximum
Unobservable Input
Yield	14.30%	13.60%
Consolidated Funds | Level III | Fixed Income | Income approach, Yield | Weighted Average
Unobservable Input
Yield	9.40%	10.90%
Consolidated Funds | Level III | Fixed Income | Income approach, collection rate
FAIR VALUE
Assets, at fair value		$ 5,473
Unobservable Input
Collection rates		1.2
Consolidated Funds | Level III | Fixed Income | Income approach, collection rate | Weighted Average
Unobservable Input
Collection rates		1.2
Consolidated Funds | Level III | Fixed Income | Market approach
FAIR VALUE
Assets, at fair value		$ 546
Consolidated Funds | Level III | Fixed Income | Market approach | Minimum
Unobservable Input
EBITDA multiple		6.1
Consolidated Funds | Level III | Fixed Income | Market approach | Weighted Average
Unobservable Input
EBITDA multiple		6.1
Consolidated Funds | Level III | Derivative Financial Instruments | Broker quotes and/or 3rd party pricing services
FAIR VALUE
Assets, at fair value	$ 1,328	$ 291