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Retirement Plans (Contributions Expected to be Paid in Next Fiscal Year and Projected Benefit Payments) (Details) $ in Thousands | Sep. 27, 2020 USD ($)
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Supplemental Employee Retirement Plan |
Defined Benefit Plan Disclosure [Line Items] |
Estimated net contributions during fiscal 2021 | $ 5,223
Defined Benefit Plans |
Defined Benefit Plan Disclosure [Line Items] |
2020 | 19,948
2021 | 19,883
2022 | 19,947
2023 | 20,205
2024 | 20,678
2026-2030 | 111,465
Postretirement Health Plans |
Defined Benefit Plan Disclosure [Line Items] |
Estimated net contributions during fiscal 2021 | 1,260
2020 | 1,260
2021 | 1,276
2022 | 1,296
2023 | 1,319
2024 | 1,336
2026-2030 | $ 6,634

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