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PENSION AND POSTRETIREMENT BENEFITS - Schedule of Contributions for Plans That Are Not Individually Significant (Details) - USD ($) $ in Millions | 12 Months Ended
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May 31, 2026 | May 25, 2025 | May 26, 2024
PENSION AND POSTRETIREMENT BENEFITS |  |  |
Contributions by the Company | $ 9.1 | $ 9.5 | $ 9.0
Central States Southeast and Southwest Areas Pension Fund [Member] |  |  |
PENSION AND POSTRETIREMENT BENEFITS |  |  |
Contributions by the Company | 2.5 | 2.5 | 2.4
Western Conference Of Teamsters Pension Plan [Member] |  |  |
PENSION AND POSTRETIREMENT BENEFITS |  |  |
Contributions by the Company | 4.5 | 4.7 | 4.3
Retirement Plan Name, Other [Member] |  |  |
PENSION AND POSTRETIREMENT BENEFITS |  |  |
Contributions by the Company | $ 2.1 | $ 2.3 | $ 2.3

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