v3.26.1
Equity Compensation Plans and Other Incentive Compensation - Stock Option Activity (Detail) - $ / shares
12 Months Ended
May 31, 2026
May 31, 2025
May 31, 2024
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]      
Options Outstanding, Beginning Balance 5,900,000 4,900,000 4,200,000
Options, Granted 6,200,000 2,000,000 1,900,000
Options, Exercised 100,000 0 0
Options, Forfeited (4,500,000) (1,000,000) (1,200,000)
Options Outstanding, Ending Balance 7,700,000 5,900,000 4,900,000
Weighted-Average Exercise Price, Beginning Balance $ 17.51 $ 20.41 $ 25.56
Weighted-Average Exercise Price, Granted 5.93 15.47 15.43
Weighted-Average Exercise Price, Exercised 5.43 14.5 13.61
Weighted-Average Exercise Price, Forfeited 14.31 27.92 30.27
Weighted-Average Exercise Price, Ending Balance 10.05 17.51 20.41
Weighted-Average Grant Date Fair Value, Beginning Balance 5.56 6.12 6.51
Weighted-Average Grant Date Fair Value, Granted 2.2 4.96 5.98
Weighted-Average Grant Date Fair Value, Exercised 2.11 4.59 4.44
Weighted-Average Grant Date Fair Value, Forfeited 4.61 7.1 7.26
Weighted-Average Grant Date Fair Value, Ending Balance $ 3.35 $ 5.56 $ 6.12