v3.25.4
Fair Value Measurements - Other Financial Instruments (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Jun. 30, 2025
May 31, 2024
Feb. 28, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Carrying Amount $ 1,534.0 $ 1,539.0    
Estimated Fair Value 1,766.8 1,818.1    
Unamortized debt discount 20.2 22.7    
Debt issuance costs, net $ 15.1 $ 17.4    
0.00% Convertible Senior Notes due 2026        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Convertible debt, stated interest rate       0.00%
0.00% Convertible Senior Notes due 2026 | Convertible senior notes        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Convertible debt, stated interest rate 0.00% 0.00%    
Carrying Amount $ 199.0 $ 199.0    
Estimated Fair Value 197.4 192.3    
Debt issuance costs, net $ 0.1 $ 0.5    
5.50% Convertible Senior Notes due 2029 | Convertible senior notes        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Convertible debt, stated interest rate 5.50% 5.50% 5.50%  
Carrying Amount $ 350.0 $ 350.0    
Estimated Fair Value 584.4 635.8    
Debt issuance costs, net 5.7 6.4    
Term Loan due and payable on May 30, 2029 | Convertible senior notes        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Carrying Amount 985.0 990.0    
Estimated Fair Value $ 985.0 $ 990.0