v3.25.2
Equity Compensation Plans and Other Incentive Compensation - Stock Option Activity (Detail) - $ / shares
12 Months Ended
May 31, 2025
May 31, 2024
May 31, 2023
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]      
Options Outstanding, Beginning Balance 4,936,000 4,222,000 3,244,000
Options, Granted 2,002,000 1,949,000 1,704,000
Options, Exercised (23,000) (11,000) (22,000)
Options, Forfeited (988,000) (1,224,000) (704,000)
Options Outstanding, Ending Balance 5,927,000 4,936,000 4,222,000
Weighted-Average Exercise Price, Beginning Balance $ 20.41 $ 25.56 $ 32.13
Weighted-Average Exercise Price, Granted 15.47 15.43 14.68
Weighted-Average Exercise Price, Exercised 14.5 13.61 14.78
Weighted-Average Exercise Price, Forfeited 27.92 30.27 29.81
Weighted-Average Exercise Price, Ending Balance 17.51 20.41 25.56
Weighted-Average Grant Date Fair Value, Beginning Balance 6.12 6.51 7.66
Weighted-Average Grant Date Fair Value, Granted 4.96 5.98 4.61
Weighted-Average Grant Date Fair Value, Exercised 4.59 4.44 4.23
Weighted-Average Grant Date Fair Value, Forfeited 7.1 7.26 7.26
Weighted-Average Grant Date Fair Value, Ending Balance $ 5.56 $ 6.12 $ 6.51