Retirement Plans (Determining the Present Values of Benefit Obligations and Net Periodic Benefit Costs) (Details) - employee	12 Months Ended
	Oct. 01, 2023	Oct. 02, 2022	Oct. 03, 2021
Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Assumptions used to determine benefit obligations, Discount rate	6.10%	5.63%	3.11%
Assumptions used to determine net periodic benefit cost, Discount rate	5.63%	3.11%	3.10%
Assumptions used to determine net periodic benefit cost, Long-term rate of return on assets	5.10%	4.50%	5.40%
SERP
Defined Benefit Plan Disclosure [Line Items]
Assumptions used to determine benefit obligations, Discount rate	6.26%	5.80%	2.99%
Assumptions used to determine net periodic benefit cost, Discount rate	5.80%	2.99%	2.84%
Number of active employees		0	0
Postretirement Health Plans
Defined Benefit Plan Disclosure [Line Items]
Assumptions used to determine benefit obligations, Discount rate	6.27%	5.82%	2.95%
Assumptions used to determine net periodic benefit cost, Discount rate	5.82%	2.95%	2.77%