INCOME TAXES (Components of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Current income tax (benefit) expense	$ (1.8)	$ 0.5	$ 0.5
Deferred income tax expense (benefit)	3.7	(3.2)	(14.5)
Total income tax expense (benefit)	$ 1.9	$ (2.7)	$ (14.0)