v3.26.1
Fair Value Measurements - Schedule of Financial Instruments Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash equivalents $ 920.6 $ 764.8
Short-term investments 57.6 146.9
Assets, fair value disclosure 978.2 911.7
Corporate notes and obligations    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments 34.6 79.1
U.S. Treasury securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments 11.7 45.3
Municipal securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments 10.8 10.7
Asset backed securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments 0.5 6.2
U.S. agency obligations    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments   3.8
Supranational Securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments   1.8
Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash equivalents 920.6 764.8
Short-term investments 0.0 0.0
Assets, fair value disclosure 920.6 764.8
Level 1 | Corporate notes and obligations    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments 0.0 0.0
Level 1 | U.S. Treasury securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments 0.0 0.0
Level 1 | Municipal securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments 0.0 0.0
Level 1 | Asset backed securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments 0.0 0.0
Level 1 | U.S. agency obligations    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments   0.0
Level 1 | Supranational Securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments   0.0
Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash equivalents 0.0 0.0
Short-term investments 57.6 146.9
Assets, fair value disclosure 57.6 146.9
Level 2 | Corporate notes and obligations    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments 34.6 79.1
Level 2 | U.S. Treasury securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments 11.7 45.3
Level 2 | Municipal securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments 10.8 10.7
Level 2 | Asset backed securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments 0.5 6.2
Level 2 | U.S. agency obligations    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments   3.8
Level 2 | Supranational Securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments   1.8
Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash equivalents 0.0 0.0
Short-term investments 0.0 0.0
Assets, fair value disclosure 0.0 0.0
Level 3 | Corporate notes and obligations    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments 0.0 0.0
Level 3 | U.S. Treasury securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments 0.0 0.0
Level 3 | Municipal securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments 0.0 0.0
Level 3 | Asset backed securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments 0.0 0.0
Level 3 | U.S. agency obligations    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments   0.0
Level 3 | Supranational Securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term investments   0.0
Money market funds    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash equivalents 920.6 764.8
Money market funds | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash equivalents 920.6 764.8
Money market funds | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash equivalents 0.0 0.0
Money market funds | Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash equivalents $ 0.0 $ 0.0