v3.24.3
Debt - Components of Convertible Debt (Details) - USD ($)
$ in Millions
Sep. 30, 2024
Jun. 30, 2024
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net [Abstract]    
Net carrying amount $ 1,546.5  
5.50% Convertible Senior Notes Due 2029 | Convertible senior notes    
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net [Abstract]    
Principal 350.0 $ 350.0
Unamortized debt issuance costs (7.3) (7.6)
Net carrying amount 342.7 342.4
0% Convertible Senior Notes Due February 15, 2026 | Convertible senior notes    
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net [Abstract]    
Principal 199.0 199.0
Unamortized debt issuance costs (1.2) (1.4)
Net carrying amount 197.8 197.6
Convertible Senior Notes Outstanding on November 16, 2025 | Convertible senior notes | Term Loan Facility    
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net [Abstract]    
Principal 1,000.0 1,000.0
Unamortized debt issuance costs (12.1) (12.6)
Principal payments (2.5) 0.0
Unamortized debt discount (26.3) (27.4)
Net carrying amount $ 959.1 $ 960.1