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PENSION AND POSTRETIREMENT BENEFITS (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Feb. 25, 2024 | May 26, 2024 | May 28, 2023 | May 29, 2022 | Dec. 31, 2023 | Dec. 30, 2023
PENSION AND POSTRETIREMENT BENEFITS |  |  |  |  |  |
Defined Benefit Plan, Recognized Net Actuarial Gain (Loss), Percentage |  | 10.00% |  |  |  |
Fair Value Investments Ability To Impose Customary Redemption Gates |  | $ 22.1 |  |  |  |
Fair Value Investments Impose Customary Redemption Gates |  | $ 0.0 |  |  |  |
Percentage Providing More Than Plans Contribution |  | 5.00% |  |  |  |
Defined Contribution Plan, Cost |  | $ 62.3 | $ 59.4 | $ 57.9 |  |
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax | $ 6.8 |  |  |  |  |
Maximum [Member] |  |  |  |  |  |
PENSION AND POSTRETIREMENT BENEFITS |  |  |  |  |  |
Red Zone Multiemployer Plans Funded Percentage |  | 65.00% |  |  |  |
Yellow Zone Multiemployer Plans Funded Percentage |  | 80.00% |  |  |  |
Minimum [Member] |  |  |  |  |  |
PENSION AND POSTRETIREMENT BENEFITS |  |  |  |  |  |
Green Zone Multiemployer Plan Funded Percentage |  | 80.00% |  |  |  |
Private Equity Funds [Member] |  |  |  |  |  |
PENSION AND POSTRETIREMENT BENEFITS |  |  |  |  |  |
Unfunded Commitment For Additional Investment |  | $ 33.1 |  |  |  |
Natural Resources Funds [Member] |  |  |  |  |  |
PENSION AND POSTRETIREMENT BENEFITS |  |  |  |  |  |
Unfunded Commitment For Additional Investment |  | $ 10.1 |  |  |  |
Fixed Income Securities [Member] |  |  |  |  |  |
PENSION AND POSTRETIREMENT BENEFITS |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  | 90.00% |  |  |  |
Defined Benefit Plan, Equity Securities [Member] |  |  |  |  |  |
PENSION AND POSTRETIREMENT BENEFITS |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  | 10.00% |  |  |  |
Pension Plan [Member] |  |  |  |  |  |
PENSION AND POSTRETIREMENT BENEFITS |  |  |  |  |  |
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) |  | $ 31.2 | $ 265.5 |  |  |
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate |  | 5.58% | 5.50% |  | 5.20% | 5.52%
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) |  | $ 118.4 | $ (158.1) |  |  |
Defined Benefit Plan, Accumulated Benefit Obligation |  | 2,570.0 | 2,800.0 |  |  |
Defined Benefit Plan Recognized Net Actuarial Gain Loss |  | 12.5 | 0.1 | $ 2.9 |  |
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year |  | 11.7 |  |  |  |
Defined benefit plan, settlement, payment and plan of assets | $ 135.0 |  |  |  |  |
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax |  | 1.1 |  |  |  |
Other Postretirement Benefits Plan [Member] |  |  |  |  |  |
PENSION AND POSTRETIREMENT BENEFITS |  |  |  |  |  |
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) |  | $ 0.8 | $ 6.3 |  |  |
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate |  | 5.41% | 5.37% |  |  |
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) |  | $ 0.2 | $ 0.1 |  |  |
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year |  | $ 6.6 |  |  |  |

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