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DEBT (Tables)
 12 Months Ended
Dec. 31, 2024
Debt Disclosure [Abstract]  
Schedule of Convertible Notes and Components of Interest Expense The following table is a summary of the 2026 Notes as of December 31, 2024 and 2023 (in millions):
December 31, 2024December 31, 2023
Principal Amount$2,012.5 $2,012.5 
Unamortized Debt Discounts and Issuance Costs(10.3)(15.5)
Net Carrying Amount $2,002.2 $1,997.0 
Fair Value (Level 2)$1,579.8 $1,061.6 
The components of interest expense related to the 2026 Notes were as follows (in millions):
Year Ended December 31,
202420232022
Contractual interest$25.2 $25.2 $25.2 
Amortization of debt discounts and debt issuance costs5.2 5.2 5.0 
Interest expense$30.4 $30.4 $30.2