v3.26.1
Stock-Based Compensation Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2024
Share-Based Payment Arrangement [Abstract]      
Pre-tax compensation expense $ 32 $ 28 $ 25
Deferred tax benefit 5 3 3
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount $ 24    
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition 1 year 9 months 18 days    
Intrinsic value of SSARs exercised $ 0 0 12
Fair value of shares vested 6 5 4
Tax benefit from exercise / vesting of awards $ 1 $ 1 $ 3