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Debt Schedule of Debt (Tables)
3 Months Ended
Mar. 31, 2025
Debt Disclosure [Abstract]  
Schedule of Debt
A summary of debt is as follows (in millions):
March 31, 2025December 31, 2024
MaturityCurrentLong-TermCurrentLong-Term
8.25% Notes:
Feb. 2027
Principal$— $— $— $74.3 
Interest— — 6.1 9.2 
2.25% Convertible Notes:
Nov. 2030
Principal— 402.5 — 402.5 
 Total$ $402.5 $6.1 $486.0 
A summary of interest expense and amortization of debt issuance costs is as follows (in millions):
Three Months Ended March 31,
20252024
Contractual interest expense (2.25% coupon)$2.3 $— 
Amortization of debt issuance costs and discount
0.5 — 
Convertible Notes interest expense$2.8 $