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Note 17 - Pension and Postretirement Benefits (Tables) | 12 Months Ended
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May 28, 2023
Notes Tables |
Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block] |
|  | Pension Plans |  |  | Postretirement Plans |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Change in Benefit Obligation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Benefit obligation at beginning of year |  | $ | 3,132.6 |  |  | $ | 3,739.2 |  |  | $ | 64.8 |  |  | $ | 81.5 |
Service cost |  |  | 6.5 |  |  |  | 8.7 |  |  |  | 0.1 |  |  |  | 0.2 |
Interest cost |  |  | 124.0 |  |  |  | 83.3 |  |  |  | 2.3 |  |  |  | 1.3 |
Amendments |  |  | 3.0 |  |  |  | 3.7 |  |  |  | — |  |  |  | — |
Actuarial gain |  |  | (265.5 | ) |  |  | (503.1 | ) |  |  | (6.3 | ) |  |  | (9.5 | )
Benefits paid |  |  | (199.3 | ) |  |  | (198.3 | ) |  |  | (7.3 | ) |  |  | (8.2 | )
Currency |  |  | (1.1 | ) |  |  | (0.9 | ) |  |  | (0.4 | ) |  |  | (0.5 | )
Benefit obligation at end of year |  | $ | 2,800.2 |  |  | $ | 3,132.6 |  |  | $ | 53.2 |  |  | $ | 64.8 |
Change in Plan Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of plan assets at beginning of year |  | $ | 3,294.7 |  |  | $ | 3,848.8 |  |  | $ | 3.4 |  |  | $ | 3.3 |
Actual return on plan assets |  |  | (158.1 | ) |  |  | (366.1 | ) |  |  | 0.1 |  |  |  | 0.1 |
Employer contributions |  |  | 12.5 |  |  |  | 11.5 |  |  |  | 7.3 |  |  |  | 8.2 |
Benefits paid |  |  | (199.3 | ) |  |  | (198.4 | ) |  |  | (7.3 | ) |  |  | (8.2 | )
Currency |  |  | (1.3 | ) |  |  | (1.1 | ) |  |  | — |  |  |  | — |
Fair value of plan assets at end of year |  | $ | 2,948.5 |  |  | $ | 3,294.7 |  |  | $ | 3.5 |  |  | $ | 3.4 |
Schedule of Net Funded Status [Table Text Block] |
|  | Pension Plans |  |  | Postretirement Plans |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Funded Status |  | $ | 148.3 |  |  | $ | 162.1 |  |  | $ | (49.7 | ) |  | $ | (61.4 | )
Amounts Recognized in Consolidated Balance Sheets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other assets |  | $ | 249.9 |  |  | $ | 277.0 |  |  | $ | 3.3 |  |  | $ | 3.2 |
Other accrued liabilities |  |  | (9.7 | ) |  |  | (10.2 | ) |  |  | (7.2 | ) |  |  | (8.1 | )
Other noncurrent liabilities |  |  | (91.9 | ) |  |  | (104.7 | ) |  |  | (45.8 | ) |  |  | (56.5 | )
Net Amount Recognized |  | $ | 148.3 |  |  | $ | 162.1 |  |  | $ | (49.7 | ) |  | $ | (61.4 | )
Amounts Recognized in Accumulated Other Comprehensive (Income) Loss (Pre-tax) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Actuarial net loss (gain) |  | $ | 8.1 |  |  | $ | (30.2 | ) |  | $ | (46.5 | ) |  | $ | (44.5 | )
Net prior service cost (benefit) |  |  | 9.6 |  |  |  | 8.0 |  |  |  | (9.2 | ) |  |  | (11.0 | )
Total |  | $ | 17.7 |  |  | $ | (22.2 | ) |  | $ | (55.7 | ) |  | $ | (55.5 | )
Weighted-Average Actuarial Assumptions Used to Determine Benefit Obligations at May 28, 2023 and May 29, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  | 5.50 | % |  |  | 4.48 | % |  |  | 5.37 | % |  |  | 4.24 | %
Long-term rate of compensation increase |  |  | N/A |  |  |  | N/A |  |  |  | N/A |  |  |  | N/A |
Schedule of Defined Benefit Plans Disclosures [Table Text Block] |
|  | 2023 |  |  | 2022 |
Projected benefit obligation |  | $ | 101.6 |  |  | $ | 114.9 |
Accumulated benefit obligation |  |  | 101.6 |  |  |  | 114.9 |
|  | Pension Plans |  |  | Postretirement Plans |
|  | 2023 |  |  | 2022 |  |  | 2021 |  |  | 2023 |  |  | 2022 |  |  | 2021 |
Service cost |  | $ | 6.5 |  |  | $ | 8.7 |  |  | $ | 11.6 |  |  | $ | 0.1 |  |  | $ | 0.2 |  |  | $ | 0.2 |
Interest cost |  |  | 124.0 |  |  |  | 83.3 |  |  |  | 86.8 |  |  |  | 2.3 |  |  |  | 1.3 |  |  |  | 1.5 |
Expected return on plan assets |  |  | (145.9 | ) |  |  | (145.4 | ) |  |  | (140.0 | ) |  |  | — |  |  |  | — |  |  |  | — |
Amortization of prior service cost (benefit) |  |  | 1.4 |  |  |  | 1.9 |  |  |  | 2.3 |  |  |  | (1.7 | ) |  |  | (2.0 | ) |  |  | (2.1 | )
Recognized net actuarial loss (gain) |  |  | 0.1 |  |  |  | (2.9 | ) |  |  | 0.8 |  |  |  | (4.4 | ) |  |  | (3.5 | ) |  |  | (3.5 | )
Settlement gain |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (0.5 | )
Curtailment loss |  |  | — |  |  |  | — |  |  |  | 0.2 |  |  |  | — |  |  |  | — |  |  |  | — |
Pension and postretirement cost (benefit) — Company plans |  |  | (13.9 | ) |  |  | (54.4 | ) |  |  | (38.3 | ) |  |  | (3.7 | ) |  |  | (4.0 | ) |  |  | (4.4 | )
Pension cost (benefit) — multi-employer plans |  |  | 9.2 |  |  |  | 8.1 |  |  |  | 7.4 |  |  |  | — |  |  |  | — |  |  |  | — |
Total pension and postretirement cost (benefit) |  | $ | (4.7 | ) |  | $ | (46.3 | ) |  | $ | (30.9 | ) |  | $ | (3.7 | ) |  | $ | (4.0 | ) |  | $ | (4.4 | )
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] |
|  | Pension Plans |  |  | Postretirement Plans |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Net actuarial gain (loss) |  | $ | (38.4 | ) |  | $ | (8.5 | ) |  | $ | 6.3 |  |  | $ | 9.6 |
Amendments |  |  | (3.0 | ) |  |  | (3.7 | ) |  |  | — |  |  |  | — |
Amortization of prior service cost (benefit) |  |  | 1.4 |  |  |  | 1.9 |  |  |  | (1.7 | ) |  |  | (2.0 | )
Recognized net actuarial gain |  |  | — |  |  |  | (2.9 | ) |  |  | (4.4 | ) |  |  | (3.5 | )
Currency |  |  | 0.1 |  |  |  | 0.1 |  |  |  | — |  |  |  | 0.1 |
Net amount recognized |  | $ | (39.9 | ) |  | $ | (13.1 | ) |  | $ | 0.2 |  |  | $ | 4.2 |
Defined Benefit Plan, Assumptions [Table Text Block] |
|  | Pension Plans |  |  | Postretirement Plans |
|  | 2023 |  |  | 2022 |  |  | 2021 |  |  | 2023 |  |  | 2022 |  |  | 2021 |
Discount rate - interest cost |  |  | 4.09 | % |  |  | 2.29 | % |  |  | 2.30 | % |  |  | 3.83 | % |  |  | 1.69 | % |  |  | 1.74 | %
Discount rate - service cost |  |  | 4.74 | % |  |  | 3.50 | % |  |  | 3.35 | % |  |  | 4.60 | % |  |  | 3.55 | % |  |  | 3.03 | %
Long-term rate of return on plan assets |  |  | 4.56 | % |  |  | 3.87 | % |  |  | 3.74 | % |  |  | N/A |  |  |  | N/A |  |  |  | N/A |
Long-term rate of compensation increase |  |  | N/A |  |  |  | N/A |  |  |  | N/A |  |  |  | N/A |  |  |  | N/A |  |  |  | N/A |
Schedule of Allocation of Plan Assets [Table Text Block] |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Cash and cash equivalents |  | $ | 5.7 |  |  | $ | 152.6 |  |  | $ | — |  |  | $ | 158.3 |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. equity securities |  |  | 59.0 |  |  |  | 19.5 |  |  |  | — |  |  |  | 78.5 |
International equity securities |  |  | 34.4 |  |  |  | — |  |  |  | — |  |  |  | 34.4 |
Fixed income securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Government bonds |  |  | — |  |  |  | 562.2 |  |  |  | — |  |  |  | 562.2 |
Corporate bonds |  |  | — |  |  |  | 1,878.1 |  |  |  | — |  |  |  | 1,878.1 |
Mortgage-backed bonds |  |  | — |  |  |  | 22.0 |  |  |  | — |  |  |  | 22.0 |
Net receivables for unsettled transactions |  |  | 2.6 |  |  |  | — |  |  |  | — |  |  |  | 2.6 |
Fair value measurement of pension plan assets in the fair value hierarchy |  | $ | 101.7 |  |  | $ | 2,634.4 |  |  | $ | — |  |  | $ | 2,736.1 |
Investments measured at net asset value |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 212.4 |
Total pension plan assets |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 2,948.5 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Cash and cash equivalents |  | $ | 19.8 |  |  | $ | 93.2 |  |  | $ | — |  |  | $ | 113.0 |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. equity securities |  |  | 65.6 |  |  |  | 19.5 |  |  |  | — |  |  |  | 85.1 |
International equity securities |  |  | 34.4 |  |  |  | — |  |  |  | — |  |  |  | 34.4 |
Fixed income securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Government bonds |  |  | — |  |  |  | 653.1 |  |  |  | — |  |  |  | 653.1 |
Corporate bonds |  |  | — |  |  |  | 2,179.3 |  |  |  | — |  |  |  | 2,179.3 |
Mortgage-backed bonds |  |  | — |  |  |  | 8.6 |  |  |  | — |  |  |  | 8.6 |
Net payables for unsettled transactions |  |  | (9.6 | ) |  |  | — |  |  |  | — |  |  |  | (9.6 | )
Fair value measurement of pension plan assets in the fair value hierarchy |  | $ | 110.2 |  |  | $ | 2,953.7 |  |  | $ | — |  |  | $ | 3,063.9 |
Investments measured at net asset value |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 230.8 |
Total pension plan assets |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 3,294.7 |
|  | May 28, 2023 |  |  | May 29, 2022 |
Equity securities |  |  | 4 | % |  |  | 4 | %
Debt securities |  |  | 84 | % |  |  | 87 | %
Real estate funds |  |  | 1 | % |  |  | 1 | %
Private equity |  |  | 4 | % |  |  | 4 | %
Other |  |  | 7 | % |  |  | 4 | %
Total |  |  | 100 | % |  |  | 100 | %
Schedule of Health Care Cost Trend Rates [Table Text Block] |
Assumed Health Care Cost Trend Rates at: |  | May 28, 2023 |  |  | May 29, 2022 |
Initial health care cost trend rate |  |  | 6.92 | % |  |  | 6.32 | %
Ultimate health care cost trend rate |  |  | 4.43 | % |  |  | 4.44 | %
Year that the rate reaches the ultimate trend rate |  | 2034 |  |  | 2029 |
Schedule of Expected Benefit Payments [Table Text Block] |
|  | Pension |  |  | Postretirement |
|  | Plans |  |  | Plans |
2024 |  | $ | 204.0 |  |  | $ | 7.2 |
2025 |  |  | 203.1 |  |  |  | 6.7 |
2026 |  |  | 204.7 |  |  |  | 6.2 |
2027 |  |  | 205.7 |  |  |  | 5.7 |
2028 |  |  | 206.4 |  |  |  | 5.2 |
Succeeding 5 years |  |  | 1,022.0 |  |  |  | 20.2 |
Multiemployer Plan [Table Text Block] |
|  | Pension Protection Act Zone Status |  | FIP / RP Status |  |  | Contributions by the Company (millions) |  |  |  | Expiration Dates of Collective |
Pension Fund | EIN / PN | 2022 | 2021 |  | Pending / Implemented |  |  | FY23 |  |  | FY22 |  |  | FY21 |  | Surcharge Imposed |  | Bargaining Agreements |
Central States, Southeast and Southwest Areas Pension Fund | 36-6044243/ 001 | Red, Critical and Declining | Red, Critical and Declining |  | RP Implemented |  |  |  | 2.6 |  |  |  | 2.5 |  |  |  | 2.2 |  | No |  | 5/31/2025 |
Western Conference of Teamsters Pension Plan | 91-6145047/ 001 | Green | Green |  | N/A |  |  |  | 4.4 |  |  |  | 3.8 |  |  |  | 3.8 |  | No |  | 4/30/2025 |
Other Plans |  |  |  |  |  |  | 2.2 |  |  |  | 1.8 |  |  |  | 1.4 |  |  |  |  |  |
Total Contributions |  |  |  |  |  | $ | 9.2 |  |  | $ | 8.1 |  |  | $ | 7.4 |  |  |  |  |  |

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