v3.26.3
Pension and Retiree Medical Benefits - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 4 Months Ended 8 Months Ended
Sep. 05, 2026
Dec. 26, 2026
Sep. 05, 2026
Sep. 06, 2025
Dec. 27, 2025
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate 5.70%   5.70%   5.50%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-Term Rate of Return on Plan Assets     7.80%    
Interest rate discount rate     4.90%    
Forecast          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-Term Rate of Return on Plan Assets   7.80%      
Interest rate discount rate   5.10%      
Domestic - Plan I          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement $ (144)   $ (144)    
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), after Tax $ (111)   $ (111)    
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements, Net of Tax, Per Share $ (0.08)   $ (0.08)    
Foreign Plan          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Plan Assets, Contributions by Employer     $ 52 $ 29  
Domestic Plan          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Plan Assets, Contributions by Employer     $ 200 $ 250