v3.26.1
Fair Value Measurements - Additional Information (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Marketable securities contractual maturities $ 900.0  
Marketable securities, total estimated fair value 1,800.0  
Equity securities, cost or amortized cost 8.2 $ 9.5
Level 2 | 2026 Notes    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Convertible notes 46.4 45.8
Level 2 | 2027 Notes    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Convertible notes 101.0 99.1
Level 2 | 2028 Notes    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Convertible notes 469.5 467.9
Level 2 | 2030 Notes    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Convertible notes 603.4 655.4
Level 2 | 2033 Notes    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Convertible notes 1,421.4 1,553.8
Level 2 | 2034 Notes    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Convertible notes $ 517.6 $ 566.2
Minimum    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Marketable securities contractual maturities period 1 year  
Maximum    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Marketable securities contractual maturities period 5 years