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Pensions And Other Postretirement Benefits (Weighted Average Assumptions) (Details)
 12 Months Ended
Sep. 27, 2025
Sep. 28, 2024
Sep. 30, 2023
Other Postretirement Benefits Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate 3.44% 4.92% 4.59%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate 2.69% 3.44% 4.92%
Defined Benefit Plan, Funded Plan | Qualified Plan | Pension Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate 5.00% 5.70% 5.20%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate 6.00% 5.00% 5.70%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-Term Rate of Return on Plan Assets 5.00% 5.70% 5.20%
Defined Benefit Plan, Unfunded Plan | Nonqualified Plan | Pension Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate 4.85% 5.79% 5.42%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate 5.26% 4.85% 5.79%