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Pension and Retiree Medical Benefits - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 25, 2023 | Mar. 19, 2022 | Sep. 09, 2023
Domestic Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Employer | $ 125 | $ 75 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), (Gain) Loss Due to Settlement | 0 |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 25 | 20 |
Domestic Plan | Forecast |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year |  |  | $ 125
Foreign Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Employer | $ 17 | 10 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) |  | $ (3) |

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