DEBT OBLIGATIONS AND CREDIT FACILITIES - Collateralized Loan Obligation Loans Payable (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Fair value		$ 6,536,858
Consolidated Funds
Debt Instrument [Line Items]
Fair value	$ 7,806,263
Consolidated Funds | Senior secured notes
Debt Instrument [Line Items]
Fair value	$ 7,472,521	$ 6,321,580
Weighted Average Interest Rate	1.75%	2.00%
Weighted Average Remaining Maturity (years)	11 years	10 years 2 months 12 days
Consolidated Funds | Subordinated notes
Debt Instrument [Line Items]
Fair value	$ 333,742	$ 215,278
Weighted Average Remaining Maturity (years)	11 years 2 months 12 days	10 years 7 months 6 days