Retirement Benefits and Postemployment Benefits (Health Care Cost Trend Rates) (Details) |
12 Months Ended | |
|---|---|---|
May 25, 2025 |
May 26, 2024 |
|
| Defined Benefit Plan Assumed Health Care Cost Trend Rates [Abstract] | ||
| Rate to which the cost trend rate is assumed to decline (ultimate rate) | 4.50% | 4.50% |
| Year that Rate Reaches Ultimate Trend Rate | 2034 | 2033 |
| Under Age 65 [Member] | ||
| Defined Benefit Plan Assumed Health Care Cost Trend Rates [Abstract] | ||
| Health care cost trend rate for next year | 7.90% | 7.30% |
| Over Age 65 [Member] | ||
| Defined Benefit Plan Assumed Health Care Cost Trend Rates [Abstract] | ||
| Health care cost trend rate for next year | 7.90% | 7.30% |