SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) loan_obligation shares	Dec. 31, 2020 USD ($) loan_obligation	Dec. 31, 2019 USD ($)
Summary of Significant Accounting Policies [Line Items]
Number of CLOs consolidated | loan_obligation	23	21
Carried interest, contingent repayment obligations	$ 0	$ 0
Foreign currency transaction gain (loss)	$ (4,800,000)	$ 13,100,000	$ (8,500,000)
ARCC
Summary of Significant Accounting Policies [Line Items]
Management fees as a percentage of net investment income	20.00%
Hurdle rate per quarter	1.75%
Hurdle rate per annum	7.00%
Percentage of net investment income received from first dollar earned	20.00%
CADC
Summary of Significant Accounting Policies [Line Items]
Management fees as a percentage of net investment income	15.00%
Hurdle rate per quarter	1.50%
Hurdle rate per annum	6.00%
Percentage of net investment income received from first dollar earned	15.00%
Class A Common Stock | Ares Acquisition Corporation
Summary of Significant Accounting Policies [Line Items]
Temporary equity, shares outstanding (in shares) | shares	100,000,000
Minimum
Summary of Significant Accounting Policies [Line Items]
Estimated useful lives, intangible assets	2 years
Performance fee compensation, employment or service period	4 years
Minimum | Property Plant And Equipment Other Than Leasehold Improvements
Summary of Significant Accounting Policies [Line Items]
Estimated useful life, fixed assets	3 years
Maximum
Summary of Significant Accounting Policies [Line Items]
Estimated useful lives, intangible assets	13 years 6 months
Performance fee compensation, employment or service period	6 years
Maximum | Property Plant And Equipment Other Than Leasehold Improvements
Summary of Significant Accounting Policies [Line Items]
Estimated useful life, fixed assets	7 years