v3.26.1
Marketable Securities and Fair Value Measurements (Details) - Level 2 - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Amortized Cost $ 474.4 $ 541.3
Gross Unrealized Gains 0.1 1.2
Gross Unrealized Losses (0.9) 0.0
Fair Value 473.6 542.5
Corporate bonds    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Amortized Cost 450.1 528.0
Gross Unrealized Gains 0.1 1.1
Gross Unrealized Losses (0.8) 0.0
Fair Value 449.4 529.1
Government securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Amortized Cost 24.3 13.3
Gross Unrealized Gains 0.0 0.1
Gross Unrealized Losses (0.1) 0.0
Fair Value $ 24.2 $ 13.4