FAIR VALUE MEASUREMENTS - UNREALIZED GAIN OR LOSS ON INVESTMENTS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Net unrealized losses included in earnings related to investments held at end of period	$ 2.5	$ 0.1	$ 15.9
Net unrealized gains included in earnings related to investments held at end of period				$ 9.7