v3.26.1
Income Taxes - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2024
Apr. 30, 2023
Tax Credit Carryforward [Line Items]        
Income tax expense (benefit) $ 76.3 $ 184.0 $ 252.4  
Company's unrecognized tax benefits 1.5 2.5 4.6 $ 5.3
Unrecognized tax benefits that would affect the effective tax rate 1.2 $ 2.0 $ 3.7  
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount $ 1.1