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Retirement Plans (Determining the Present Values of Benefit Obligations and Net Periodic Benefit Costs) (Details) - employee
 12 Months Ended
Sep. 28, 2025
Sep. 29, 2024
Oct. 01, 2023
Qualified Plan      
Defined Benefit Plan Disclosure [Line Items]      
Assumptions used to determine benefit obligations, Discount rate 5.63% 5.11% 6.10%
Assumptions used to determine net periodic benefit cost, Discount rate 5.11% 6.10% 5.63%
Assumptions used to determine net periodic benefit cost, Long-term rate of return on assets 5.10% 5.60% 5.10%
SERP      
Defined Benefit Plan Disclosure [Line Items]      
Assumptions used to determine benefit obligations, Discount rate 5.45% 5.09% 6.26%
Assumptions used to determine net periodic benefit cost, Discount rate 5.09% 6.26% 5.80%
Number of active employees   0 0
Postretirement Health Plans      
Defined Benefit Plan Disclosure [Line Items]      
Assumptions used to determine benefit obligations, Discount rate 5.39% 5.09% 6.27%
Assumptions used to determine net periodic benefit cost, Discount rate 5.09% 6.27% 5.82%