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PENSION AND POSTRETIREMENT BENEFITS - Weighted Average Actuarial Assumption Used to Determine Net Expense (Details) | 12 Months Ended
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May 31, 2026 | May 25, 2025 | May 26, 2024
Pension Plan [Member] |  |  |
PENSION AND POSTRETIREMENT BENEFITS |  |  |
Long-term rate of return on plan assets | 5.89% | 5.53% | 5.00%
Interest Cost [Member] | Pension Plan [Member] |  |  |
PENSION AND POSTRETIREMENT BENEFITS |  |  |
Discount rate | 5.41% | 5.51% | 5.41%
Interest Cost [Member] | Other Postretirement Benefits Plan [Member] |  |  |
PENSION AND POSTRETIREMENT BENEFITS |  |  |
Discount rate | 4.97% | 5.38% | 5.36%
Service Cost [Member] | Pension Plan [Member] |  |  |
PENSION AND POSTRETIREMENT BENEFITS |  |  |
Discount rate | 6.17% | 5.72% | 5.60%
Service Cost [Member] | Other Postretirement Benefits Plan [Member] |  |  |
PENSION AND POSTRETIREMENT BENEFITS |  |  |
Discount rate | 5.53% | 5.22% | 5.31%

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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (j)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (j)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-8 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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