INCOME TAX - Income (Loss) from Continuing Operations Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
United States	$ 91.6	$ 104.0	$ 84.5
Foreign	3.6	(0.2)	3.1
Income from continuing operations before income taxes	$ 95.2	$ 103.8	$ 87.6