DESCRIPTION OF BUSINESS SEGMENTS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Changes to Amounts Accrued with Separation And Other Costs (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
May 31, 2026 |
May 31, 2025 |
|
| Separation And Other Costs [Roll Forward] | ||
| Separation and other costs accrued, beginning of period | $ (15) | $ 0 |
| Expense incurred | (777) | (56) |
| Amounts paid | 529 | 41 |
| Separation and other costs accrued, end of period | $ (263) | $ (15) |