DEBT - Schedule of Components of Interest Expense (Details) - 1.25% Convertible Senior Notes, Due December 2026 - Convertible Debt - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument, Redemption [Line Items]
Contractual interest	$ 25.2	$ 25.2	$ 1.2
Amortization of debt discounts and debt issuance costs	5.2	5.0	0.2
Interest expense	$ 30.4	$ 30.2	$ 1.4