INVESTMENTS AND FAIR VALUE MEASUREMENTS - NARRATIVE (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Debt securities, available-for-sale, total aggregated loss	$ 0.2	$ 0.3
Debt securities, available-for-sale, credit-related impairment loss	0.0	0.0
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Fair value of available-for-sale debt securities in unrealized loss position, Total	7.1	13.3
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Fair value of available-for-sale debt securities in unrealized loss position, Total	$ 2.7	$ 2.7