DEBT - Components of Interest Expense (Details) - 1.25% Convertible Senior Notes, Due December 2026 - Convertible Debt - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Debt Instrument, Redemption [Line Items]
Contractual interest	$ 6.3	$ 6.3
Amortization of debt discounts and debt issuance costs	1.3	1.2
Interest expense	$ 7.6	$ 7.5

Amount of the cost of borrowed funds accounted for as interest expense for debt.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Name:	us-gaap_InterestExpenseDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration