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LONG-TERM DEBT (Tables) | 6 Months Ended
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Jun. 30, 2026
Long-Term Debt, Unclassified [Abstract] |
Schedule of convertible debt | The following is a summary of our convertible debt instruments as of June 30, 2026:
(in millions) |  | Principal Amount |  | Unamortized Debt Issuance Costs |  | Net Carrying Amount |  | Fair Value Amount (1)
2027 Notes |  | $ | 862.5 |  |  | $ | (3.0) |  |  | $ | 859.5 |  |  | $ | 1,044.2 |
2028 Notes |  | 900.0 |  |  | (6.8) |  |  | 893.2 |  |  | 936.0 |
2029 Notes |  | 862.5 |  |  | (5.8) |  |  | 856.7 |  |  | 1,069.2 |
(1) The fair values are categorized in Level 2 of the fair value hierarchy. See Note 14, Fair Value Measurements, for more information on the levels of the fair value hierarchy.
Schedule of convertible debt interest expense | The following table provides a summary of the interest expense recorded for each of the 2027 Notes, 2028 Notes, and 2029 Notes:
|  | Three Months Ended June 30 |  | Six Months Ended June 30
(in millions) |  | 2026 |  | 2025 |  | 2026 |  | 2025
2027 Notes |  |  |  |  |  |  |  |
Contractual interest expense |  | $ | 9.5 |  |  | $ | 9.5 |  |  | $ | 18.9 |  |  | $ | 18.9 |
Amortization of debt issuance costs |  | 0.9 |  |  | 0.9 |  |  | 1.7 |  |  | 1.7 |
Total interest expense – 2027 Notes |  | 10.4 |  |  | 10.4 |  |  | 20.6 |  |  | 20.6 |
2028 Notes |  |  |  |  |  |  |  |
Contractual interest expense |  | 7.6 |  |  | 1.8 |  |  | 15.2 |  |  | 1.8 |
Amortization of debt issuance costs |  | 0.9 |  |  | 0.3 |  |  | 1.8 |  |  | 0.3 |
Total interest expense – 2028 Notes |  | $ | 8.5 |  |  | $ | 2.1 |  |  | $ | 17.0 |  |  | $ | 2.1 |
2029 Notes |  |  |  |  |  |  |  |
Contractual interest expense |  | 9.5 |  |  | 9.5 |  |  | 18.9 |  |  | 18.9 |
Amortization of debt issuance costs |  | 0.5 |  |  | 0.5 |  |  | 1.0 |  |  | 1.0 |
Total interest expense – 2029 Notes |  | $ | 10.0 |  |  | $ | 10.0 |  |  | $ | 19.9 |  |  | $ | 19.9 |

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- Definition Tabular disclosure of convertible debt instrument. Includes, but is not limited to, principal amount and amortized premium or discount. + References No definition available. + Details
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