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DEBT (Tables) | 9 Months Ended
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Sep. 30, 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 September 30, 2024 and December 31, 2023 (in millions):
|  | September 30, 2024 |  | December 31, 2023
Principal Amount |  | $ | 2,012.5 |  |  | $ | 2,012.5 |
Unamortized Debt Discounts and Issuance Costs |  | (11.7) |  |  | (15.5) |
Net Carrying Amount |  | $ | 2,000.8 |  |  | $ | 1,997.0 |
Fair Value (Level 2) |  | $ | 1,363.5 |  |  | $ | 1,061.6 |
The components of interest expense related to the 2026 Notes were as follows (in millions):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2024 |  | 2023 |  | 2024 |  | 2023
Contractual interest | $ | 6.4 |  |  | $ | 6.3 |  |  | $ | 19.0 |  |  | $ | 18.9 |
Amortization of debt discounts and debt issuance costs | 1.3 |  |  | 1.3 |  |  | 3.8 |  |  | 3.9 |
Interest expense | $ | 7.7 |  |  | $ | 7.6 |  |  | $ | 22.8 |  |  | $ | 22.8 |

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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