Equity Compensation Plans and Other Incentive Compensation - Stock Option Activity (Parenthetical) (Detail) - shares |
May 31, 2025 |
May 31, 2024 |
May 31, 2023 |
May 31, 2022 |
|---|---|---|---|---|
| Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] | ||||
| Options Exercisable, Number | 2,142,000 | 1,518,000 | 1,401,000 | 1,191,000 |