INVESTMENTS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Summary of Investment Holdings [Line Items]
Equity method investments net gains	$ 23.9	$ 15.2
Consolidated Funds
Summary of Investment Holdings [Line Items]
Percent of total assets	5.00%		5.00%

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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