FAIR VALUE - Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Consolidated Funds
Assets, at fair value
Collateralized loan obligations and other fixed income	$ 11,349,343	$ 11,768,099
Common stock and other equity securities	351,780	340,272
Partnership interests	961,059	708,307
Total investments, at fair value	12,662,182	12,816,678
Total assets, at fair value	12,662,182	12,816,678
Liabilities, at fair value
Derivative liabilities	(11,402)	(20,927)
Loan obligations of CLOs	(10,397,615)	(10,657,661)
Total liabilities, at fair value	(10,409,017)	(10,678,588)
Consolidated Funds  | Derivatives-foreign currency forward contracts
Liabilities, at fair value
Derivative liabilities		(17,822)
Consolidated Funds  | Warrants
Liabilities, at fair value
Derivative liabilities	(8,240)
Consolidated Funds  | Asset swaps
Liabilities, at fair value
Derivative liabilities	(3,162)	(3,105)
Consolidated Funds  | Bonds
Assets, at fair value
Collateralized loan obligations and other fixed income	876,607	857,125
Consolidated Funds  | Loans
Assets, at fair value
Collateralized loan obligations and other fixed income	9,462,121	9,910,689
Consolidated Funds  | U.S. Treasury securities
Assets, at fair value
Collateralized loan obligations and other fixed income	1,000,615	1,000,285
Consolidated Funds  | Collateralized loan obligations
Assets, at fair value
Collateralized loan obligations and other fixed income	10,000
Consolidated Funds  | Level I
Assets, at fair value
Collateralized loan obligations and other fixed income	1,000,615	1,000,285
Common stock and other equity securities	640	956
Partnership interests	0	0
Total assets, at fair value	1,001,255	1,001,241
Liabilities, at fair value
Derivative liabilities	(8,240)	(17,822)
Loan obligations of CLOs	0	0
Total liabilities, at fair value	(8,240)	(17,822)
Consolidated Funds  | Level I  | Derivatives-foreign currency forward contracts
Liabilities, at fair value
Derivative liabilities		(17,822)
Consolidated Funds  | Level I  | Warrants
Liabilities, at fair value
Derivative liabilities	(8,240)
Consolidated Funds  | Level I  | Asset swaps
Liabilities, at fair value
Derivative liabilities	0	0
Consolidated Funds  | Level I  | Bonds
Assets, at fair value
Collateralized loan obligations and other fixed income	0	0
Consolidated Funds  | Level I  | Loans
Assets, at fair value
Collateralized loan obligations and other fixed income	0	0
Consolidated Funds  | Level I  | U.S. Treasury securities
Assets, at fair value
Collateralized loan obligations and other fixed income	1,000,615	1,000,285
Consolidated Funds  | Level I  | Collateralized loan obligations
Assets, at fair value
Collateralized loan obligations and other fixed income	0
Consolidated Funds  | Level II
Assets, at fair value
Collateralized loan obligations and other fixed income	9,489,427	10,024,862
Common stock and other equity securities	0	133
Partnership interests	0	0
Total assets, at fair value	9,489,427	10,024,995
Liabilities, at fair value
Derivative liabilities	0	0
Loan obligations of CLOs	(10,397,615)	(10,657,661)
Total liabilities, at fair value	(10,397,615)	(10,657,661)
Consolidated Funds  | Level II  | Derivatives-foreign currency forward contracts
Liabilities, at fair value
Derivative liabilities		0
Consolidated Funds  | Level II  | Warrants
Liabilities, at fair value
Derivative liabilities	0
Consolidated Funds  | Level II  | Asset swaps
Liabilities, at fair value
Derivative liabilities	0	0
Consolidated Funds  | Level II  | Bonds
Assets, at fair value
Collateralized loan obligations and other fixed income	547,060	525,393
Consolidated Funds  | Level II  | Loans
Assets, at fair value
Collateralized loan obligations and other fixed income	8,932,367	9,499,469
Consolidated Funds  | Level II  | U.S. Treasury securities
Assets, at fair value
Collateralized loan obligations and other fixed income	0	0
Consolidated Funds  | Level II  | Collateralized loan obligations
Assets, at fair value
Collateralized loan obligations and other fixed income	10,000
Consolidated Funds  | Level III
Assets, at fair value
Collateralized loan obligations and other fixed income	859,301	742,952
Common stock and other equity securities	351,140	339,183
Partnership interests	241,123	238,673
Total assets, at fair value	1,451,564	1,320,808
Liabilities, at fair value
Derivative liabilities	(3,162)	(3,105)
Loan obligations of CLOs	0	0
Total liabilities, at fair value	(3,162)	(3,105)
Consolidated Funds  | Level III  | Derivatives-foreign currency forward contracts
Liabilities, at fair value
Derivative liabilities		0
Consolidated Funds  | Level III  | Warrants
Liabilities, at fair value
Derivative liabilities	0
Consolidated Funds  | Level III  | Asset swaps
Liabilities, at fair value
Derivative liabilities	(3,162)	(3,105)
Consolidated Funds  | Level III  | Bonds
Assets, at fair value
Collateralized loan obligations and other fixed income	329,547	331,732
Consolidated Funds  | Level III  | Loans
Assets, at fair value
Collateralized loan obligations and other fixed income	529,754	411,220
Consolidated Funds  | Level III  | U.S. Treasury securities
Assets, at fair value
Collateralized loan obligations and other fixed income	0	0
Consolidated Funds  | Level III  | Collateralized loan obligations
Assets, at fair value
Collateralized loan obligations and other fixed income	0
Consolidated Funds  | Investments Measured at NAV
Assets, at fair value
Collateralized loan obligations and other fixed income	0	0
Common stock and other equity securities	0	0
Partnership interests	719,936	469,634
Total assets, at fair value	719,936	469,634
Liabilities, at fair value
Derivative liabilities	0	0
Loan obligations of CLOs	0	0
Total liabilities, at fair value	0	0
Consolidated Funds  | Investments Measured at NAV | Derivatives-foreign currency forward contracts
Liabilities, at fair value
Derivative liabilities		0
Consolidated Funds  | Investments Measured at NAV | Warrants
Liabilities, at fair value
Derivative liabilities	0
Consolidated Funds  | Investments Measured at NAV | Asset swaps
Liabilities, at fair value
Derivative liabilities	0	0
Consolidated Funds  | Investments Measured at NAV | Bonds
Assets, at fair value
Collateralized loan obligations and other fixed income	0	0
Consolidated Funds  | Investments Measured at NAV | Loans
Assets, at fair value
Collateralized loan obligations and other fixed income	0	0
Consolidated Funds  | Investments Measured at NAV | U.S. Treasury securities
Assets, at fair value
Collateralized loan obligations and other fixed income	0	0
Consolidated Funds  | Investments Measured at NAV | Collateralized loan obligations
Assets, at fair value
Collateralized loan obligations and other fixed income	0
Ares Management L.P
Assets, at fair value
Common stock and other equity securities	115,970	110,389
Partnership interests	8,591	8,591
Total investments, at fair value	176,019	171,377
Total assets, at fair value	181,476	177,059
Liabilities, at fair value
Derivative liabilities		(328)
Contingent consideration	(10,550)	(57,435)
Total liabilities, at fair value	(10,753)	(57,763)
Ares Management L.P | Derivatives-foreign currency forward contracts and interest rate swaps
Assets, at fair value
Derivatives-foreign currency forward contracts and interest rate swaps	5,457
Ares Management L.P | Derivatives-foreign currency forward contracts
Assets, at fair value
Derivatives-foreign currency forward contracts and interest rate swaps		5,682
Liabilities, at fair value
Derivative liabilities	(203)
Ares Management L.P | Collateralized loan obligations and other fixed income
Assets, at fair value
Collateralized loan obligations and other fixed income	51,458	52,397
Ares Management L.P | Level I
Assets, at fair value
Common stock and other equity securities	0	0
Partnership interests	0	0
Total investments, at fair value	0	0
Total assets, at fair value	0	0
Liabilities, at fair value
Derivative liabilities		0
Contingent consideration	0	0
Total liabilities, at fair value	0	0
Ares Management L.P | Level I  | Derivatives-foreign currency forward contracts and interest rate swaps
Assets, at fair value
Derivatives-foreign currency forward contracts and interest rate swaps	0
Ares Management L.P | Level I  | Derivatives-foreign currency forward contracts
Assets, at fair value
Derivatives-foreign currency forward contracts and interest rate swaps		0
Liabilities, at fair value
Derivative liabilities	0
Ares Management L.P | Level I  | Collateralized loan obligations and other fixed income
Assets, at fair value
Collateralized loan obligations and other fixed income	0	0
Ares Management L.P | Level II
Assets, at fair value
Common stock and other equity securities	1,471	1,440
Partnership interests	0	0
Total investments, at fair value	1,471	1,440
Total assets, at fair value	6,928	7,122
Liabilities, at fair value
Derivative liabilities		(328)
Contingent consideration	0	0
Total liabilities, at fair value	(203)	(328)
Ares Management L.P | Level II  | Derivatives-foreign currency forward contracts and interest rate swaps
Assets, at fair value
Derivatives-foreign currency forward contracts and interest rate swaps	5,457
Ares Management L.P | Level II  | Derivatives-foreign currency forward contracts
Assets, at fair value
Derivatives-foreign currency forward contracts and interest rate swaps		5,682
Liabilities, at fair value
Derivative liabilities	(203)
Ares Management L.P | Level II  | Collateralized loan obligations and other fixed income
Assets, at fair value
Collateralized loan obligations and other fixed income	0	0
Ares Management L.P | Level III
Assets, at fair value
Common stock and other equity securities	114,499	108,949
Partnership interests	2,575	2,575
Total investments, at fair value	168,532	163,921
Total assets, at fair value	168,532	163,921
Liabilities, at fair value
Derivative liabilities		0
Contingent consideration	(10,550)	(57,435)
Total liabilities, at fair value	(10,550)	(57,435)
Ares Management L.P | Level III  | Derivatives-foreign currency forward contracts and interest rate swaps
Assets, at fair value
Derivatives-foreign currency forward contracts and interest rate swaps	0
Ares Management L.P | Level III  | Derivatives-foreign currency forward contracts
Assets, at fair value
Derivatives-foreign currency forward contracts and interest rate swaps		0
Liabilities, at fair value
Derivative liabilities	0
Ares Management L.P | Level III  | Collateralized loan obligations and other fixed income
Assets, at fair value
Collateralized loan obligations and other fixed income	51,458	52,397
Ares Management L.P | Investments Measured at NAV
Assets, at fair value
Common stock and other equity securities	0	0
Partnership interests	6,016	6,016
Total investments, at fair value	6,016	6,016
Total assets, at fair value	6,016	6,016
Liabilities, at fair value
Derivative liabilities		0
Contingent consideration	0	0
Total liabilities, at fair value	0	0
Ares Management L.P | Investments Measured at NAV | Derivatives-foreign currency forward contracts and interest rate swaps
Assets, at fair value
Derivatives-foreign currency forward contracts and interest rate swaps	0
Ares Management L.P | Investments Measured at NAV | Derivatives-foreign currency forward contracts
Assets, at fair value
Derivatives-foreign currency forward contracts and interest rate swaps		0
Liabilities, at fair value
Derivative liabilities	0
Ares Management L.P | Investments Measured at NAV | Collateralized loan obligations and other fixed income
Assets, at fair value
Collateralized loan obligations and other fixed income	$ 0	$ 0