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Pensions And Other Postretirement Benefits (Estimated Future Benefit Payments Expected To Be Paid) (Details) $ in Millions | 3 Months Ended |
--- | --- | ---
Dec. 29, 2018 plan | Oct. 02, 2021 USD ($)
Other Postretirement Benefits Plan [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
2021 |  | $ 3
2022 |  | 3
2023 |  | 3
2024 |  | 2
2025 |  | 3
2026-2030 |  | 7
Defined Benefit Plan, Funded Plan [Member] | Qualified Plan [Member] | Pension Plan [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plan, Number of Plans Subject to Settlement | plan | 3 |
2021 |  | 1
2022 |  | 2
2023 |  | 1
2024 |  | 0
2025 |  | 0
2026-2030 |  | 4
Defined Benefit Plan, Unfunded Plan [Member] | Nonqualified Plan [Member] | Pension Plan [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
2021 |  | 13
2022 |  | 13
2023 |  | 13
2024 |  | 13
2025 |  | 13
2026-2030 |  | $ 62

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