INVESTMENTS IN VARIABLE INTEREST ENTITIES - SCHEDULE OF INVESTMENTS IN OUR PORTFOLIO WHICH HAVE BEEN CONTINUOUSLY IN AN UNREALIZED LOSS POSITION EXCEEDING 20% OF AMORTIZED COST PRIOR TO SALE (Details) - Investments held by variable interest entities - corporate securities $ in Millions	Dec. 31, 2022 USD ($) issuer
Debt Securities, Available-for-sale [Line Items]
Less than 6 months prior to sale, Number of issuers | issuer	3
Greater than or equal to 6 months and less than 12 months prior to sale, Number of issuers | issuer	2
Less than 6 months prior to sale, Amortized cost	$ 7.0
Greater than or equal to 6 months and less than 12 months prior to sale, Amortized cost	1.7
Amortized cost, Total	8.7
Less than 6 months prior to sale, Fair value	3.9
Greater than or equal to 6 months and less than 12 months prior to sale, Fair value	0.6
Fair value, Total	$ 4.5