v3.25.1
Stock-Based Compensation (Tables)
 12 Months Ended
Apr. 30, 2025
Share-Based Payment Arrangement [Abstract]  
Share-based Payment Arrangement, Stock Appreciation Right, Activity [Table Text Block] The following table presents information about SSARs outstanding as of April 30, 2025, and for the year then ended.
Number of
SSARs
(in thousands)		Weighted-
Average
Exercise Price
per SSAR		Weighted-
Average
Remaining
Contractual
Term (years)		Aggregate
Intrinsic Value
Outstanding at April 30, 2024
3,750 $55.37 
Granted595 44.97 
Exercised(19)39.58 
Forfeited or expired(448)42.98 
Outstanding at April 30, 2025
3,878 $55.29 4.6$— 
Exercisable at April 30, 2025
2,653 $53.25 3.1$— 
Schedule of Share-Based Payment Award, Stock Appreciation Rights, Valuation Assumptions [Table Text Block] The weighted-average grant-date fair values and related valuation assumptions for the SSARS granted during each of the last three years were as follows:
202320242025
Grant-date fair value$20.67 $21.69 $12.86 
Valuation assumptions:
Expected term (years)7.07.07.0
Risk-free interest rate2.7 %4.1 %4.1 %
Expected volatility24.8 %25.0 %26.1 %
Expected dividend yield1.0 %1.2 %1.9 %
Share-Based Payment Arrangement, PBRSU, Activity [Table Text Block]
The following table presents information about PBRSUs outstanding as of April 30, 2025, and for the year then ended.
Number of
PBRSUs
(in thousands)		Weighted-
Average
Fair Value at
Grant Date
Outstanding at April 30, 2024413 $76.53 
Granted356 $42.09 
Adjusted for performance and dividends(50)$70.04 
Converted to common shares(54)$70.04 
Forfeited(27)$48.81 
Outstanding at April 30, 2025638 $59.53 
Schedule of Share-Based Payment Award, Performance Based Restricted Stock Units, Valuation Assumptions [Table Text Block] The following table shows the assumptions used in the Monte Carlo simulation model to value the awards granted during each of the last three fiscal years.
202320242025
Valuation assumptions:
Risk-free interest rate2.8 %4.6 %4.3 %
Expected volatility29.8 %22.2 %24.6 %
Expected dividend yield1.0 %1.2 %1.9 %
Remaining performance period (years) as of grant date2.82.82.8
Share-based Payment Arrangement, Performance Based Restricted Stock Units, Activity [Table Text Block] The following table presents information about RSUs outstanding as of April 30, 2025, and for the year then ended.
Number of
RSUs
(in thousands)		Weighted-
Average
Fair Value at
Grant Date
Outstanding at April 30, 202487 $68.88 
Granted157 $44.65 
Additions for dividend equivalents4 $53.38 
Converted to common shares(30)$68.28 
Forfeited(10)$45.83 
Outstanding at April 30, 2025208 $51.51 
Grant Date Fair Values of DSUs [Table Text Block] The weighted average grant-date fair values for these awards granted during each of the last three years were as follows:
202320242025
Grant-date fair value$72.10 $71.23 $45.99 
Share-based Payment Arrangement, Cost by Plan [Table Text Block] The pre-tax stock-based compensation expense and related deferred income tax benefits recognized during the last three fiscal years were as follows:
202320242025
Pre-tax compensation expense$18 $25 $28 
Deferred tax benefit3 3 3 
Stock-Based Awards, Other Information [Table Text Block] Further information related to our stock-based awards for the last three years is as follows:
202320242025
Intrinsic value of SSARs exercised$19 $12 $— 
Fair value of shares vested6 4 5 
Tax benefit from exercise / vesting of awards
4 3 1