DESCRIPTION OF BUSINESS SEGMENTS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Changes to Amounts Accrued with Business and Optimization Costs (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
May 31, 2026 |
May 31, 2025 |
May 31, 2024 |
|
| Business Optimization And Realignment Costs [Roll Forward] | |||
| Business optimization and realignment costs accrued, beginning of period | $ (227) | $ (155) | |
| Expense incurred | (352) | (756) | $ (582) |
| Amounts paid | 419 | 684 | |
| Business optimization and realignment costs accrued, end of period | $ (160) | $ (227) | $ (155) |