v3.25.4
Debt - Components of Convertible Debt (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Jun. 30, 2025
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net [Abstract]    
Principal $ 1,534.0 $ 1,539.0
Unamortized debt issuance costs (15.1) (17.4)
Unamortized debt discount (20.2) (22.7)
Net carrying amount 1,534.0  
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 (5.7) (6.4)
Net carrying amount 344.3 343.6
0.00% Convertible Senior Notes due 2026 | Convertible senior notes    
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net [Abstract]    
Principal 199.0 199.0
Unamortized debt issuance costs (0.1) (0.5)
Net carrying amount 198.9 198.5
0.00% Convertible Senior Notes due 2026 | Convertible senior notes | Term Loan Facility    
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net [Abstract]    
Principal 199.0  
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 (9.3) (10.4)
Principal payments (15.0) (10.0)
Unamortized debt discount (20.2) (22.7)
Net carrying amount $ 955.5 $ 956.9