FINANCIAL INSTRUMENTS, RISK MANAGEMENT ACTIVITIES, AND FAIR VALUES - Schedule of Unallocated Corporate items (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
May 31, 2026 |
May 25, 2025 |
May 26, 2024 |
|
| Price Risk Derivatives [Abstract] | |||
| Net gain (loss) on mark-to-market valuation of commodity positions | $ 62.0 | $ (37.4) | $ (15.4) |
| Net (gain) loss on commodity positions reclassified from unallocated corporate items to segment operating profit | (19.2) | 52.8 | 40.0 |
| Net mark-to-market revaluation of certain grain inventories | 5.6 | 0.3 | 14.5 |
| Net mark-to-market valuation of certain commodity positions recognized in unallocated corporate items | $ 48.4 | $ 15.7 | $ 39.1 |