COMMITMENTS AND CONTINGENCIES - Schedule of Private Equity Commitments (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Other Commitments [Line Items]
Total unfunded commitments	$ 57.0	$ 20.0
Private equity commitments
Other Commitments [Line Items]
Total commitments	119.8	110.9
Less: funded commitments	(69.2)	(67.6)
Total unfunded commitments	50.6	43.3
Less: commitments substantially at discretion of the Company	(50.6)	(43.3)
Total net adjusted unfunded revolving and delayed draw commitments	$ 0.0	$ 0.0