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Pension and Retiree Medical Benefits - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 23, 2024
Mar. 25, 2023
Defined Benefit Plan Disclosure [Line Items]    
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax $ (11) $ 4
Domestic Plan    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Plan Assets, Contributions by Employer 150 125
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) 33 25
Foreign Plan    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Plan Assets, Contributions by Employer 27 17
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) $ 1 $ 0