COMMITMENTS AND CONTINGENCIES - Private Equity Commitments (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Other Commitments [Line Items]
Total unfunded equity commitments	$ 29.0	$ 32.0
Equity investment commitments
Other Commitments [Line Items]
Total equity commitments	191.3	168.9
Less: funded commitments	(88.0)	(64.0)
Total unfunded equity commitments	103.3	104.6
Less: equity commitments substantially at discretion of the Company	(42.9)	(43.0)
Total net unfunded revolving and delayed draw loan commitments	$ 60.4	$ 61.6