v3.26.1
Financial Instruments - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2024
Financial Instrument [Line Items]      
Sale/maturities of available-for-sale marketable securities $ 31.4 $ 32.7 $ 38.1
Unrealized gains relates to equity securities $ 14.6 $ 1.3 $ 25.1
Minimum      
Financial Instrument [Line Items]      
Marketable securities remaining maturity 1 month    
Maximum      
Financial Instrument [Line Items]      
Marketable securities remaining maturity 24 months