INCOME TAXES - Summary of Change in Income Tax Valuation Allowance (Details) - SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ 250.4	$ 241.6	$ 282.6
Additions (reductions) charged to expense	(100.4)	33.6	(24.0)
Reductions charged to other accounts	(3.2)	(24.8)	(17.0)
Ending balance	$ 146.8	$ 250.4	$ 241.6