Retirement Plans (Components of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 01, 2023	Oct. 02, 2022	Oct. 03, 2021
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other pension and post-retirement expenses, net	Other pension and post-retirement expenses, net	Other pension and post-retirement expenses, net
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other pension and post-retirement expenses, net	Other pension and post-retirement expenses, net	Other pension and post-retirement expenses, net
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Amortization of actuarial losses and prior service cost reclassified to earnings	Amortization of actuarial losses and prior service cost reclassified to earnings	Amortization of actuarial losses and prior service cost reclassified to earnings
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration]	Amortization of actuarial losses and prior service cost reclassified to earnings	Amortization of actuarial losses and prior service cost reclassified to earnings	Amortization of actuarial losses and prior service cost reclassified to earnings
Other pension and post-retirement expenses, net	$ 6,967	$ 303	$ 881
Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Interest cost	16,068	12,506	12,558
Expected return on plan assets	(15,105)	(18,103)	(19,340)
Actuarial (gain) loss	2,349	2,193	3,510
Net periodic benefit (credit) cost	3,312	(3,404)	(3,272)
SERP
Defined Benefit Plan Disclosure [Line Items]
Interest cost	3,149	2,173	2,169
Actuarial (gain) loss	718	1,666	1,743
Amortization of unrecognized prior service cost	19	19	19
Net periodic benefit (credit) cost	3,886	3,858	3,931
Postretirement Health Plans
Defined Benefit Plan Disclosure [Line Items]
Interest cost	700	489	563
Actuarial (gain) loss	(932)	(640)	(341)
Net periodic benefit (credit) cost	$ (232)	$ (151)	$ 222