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Note 12 - Pension and Postretirement Benefits (Tables) | 3 Months Ended
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Aug. 27, 2023
Notes Tables |
Schedule of Defined Benefit Plans Disclosures [Table Text Block] |
|  | Pension Plans |
|  | Thirteen Weeks Ended |
|  | August 27, 2023 |  |  | August 28, 2022 |
Service cost |  | $ | 1.5 |  |  | $ | 1.6 |
Interest cost |  |  | 36.7 |  |  |  | 31.0 |
Expected return on plan assets |  |  | (35.8 | ) |  |  | (36.5 | )
Amortization of prior service cost |  |  | 0.4 |  |  |  | 0.4 |
Pension cost (benefit) — Company plans |  |  | 2.8 |  |  |  | (3.5 | )
Pension cost (benefit) — multi-employer plans |  |  | 2.1 |  |  |  | 2.2 |
Total pension cost (benefit) |  | $ | 4.9 |  |  | $ | (1.3 | )
|  | Postretirement Plans |
|  | Thirteen Weeks Ended |
|  | August 27, 2023 |  |  | August 28, 2022 |
Interest cost |  |  | 0.6 |  |  |  | 0.5 |
Amortization of prior service cost (benefit) |  |  | (0.4 | ) |  |  | (0.4 | )
Recognized net actuarial gain |  |  | (1.2 | ) |  |  | (1.1 | )
Total postretirement cost (benefit) |  | $ | (1.0 | ) |  | $ | (1.0 | )

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