v3.26.1
Income Taxes - Summary of Reconciliation of U.S. Federal Statutory Income Tax Rate (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Amount      
Income tax provision at the federal statutory rate $ 137.8    
Tax Jurisdiction of Domicile [Extensible Enumeration] United States    
State and local income taxes, net of federal $ 16.0    
Effects of cross-border tax laws:      
Foreign derived intangible income deduction (8.2)    
Tax credits:      
Research and development tax credit (5.6)    
Non-taxable or non-deductible items:      
Share-based compensation (17.5)    
Non-deductible compensation 5.4    
Other non-taxable or non-deductible items (4.3)    
Foreign tax effects 2.8    
Total income tax expense $ 126.4 $ 91.3 $ 25.1
Percent      
Income tax provision at the federal statutory rate 21.00% 21.00% 21.00%
State and local income taxes, net of federal 2.40% 2.40% 2.70%
Effects of cross-border tax laws:      
Foreign derived intangible income deduction (1.20%) (1.60%) (1.80%)
Tax credits:      
Research and development tax credit (0.80%) (0.90%) (1.60%)
Non-taxable or non-deductible items:      
Share-based compensation (2.70%)    
Non-deductible compensation 0.80%    
Other non-taxable or non-deductible items (0.60%)    
Foreign tax effects 0.40% 0.10% (0.30%)
Effective income tax rate 19.30% 19.50% 11.90%