Retirement Plans (Components of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2022	Oct. 03, 2021	Sep. 27, 2020
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]	Actuarial losses and prior service cost reclassified to earnings	Actuarial losses and prior service cost reclassified to earnings	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]	Actuarial losses and prior service cost reclassified to earnings	Actuarial losses and prior service cost reclassified to earnings	Actuarial losses and prior service cost reclassified to earnings
SERP
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 2,173	$ 2,169	$ 2,499
Actuarial (gain) loss	1,666	1,743	1,652
Amortization of unrecognized prior service cost	19	19	85
Net periodic benefit (credit) cost	3,858	3,931	4,236
Postretirement Health Plans
Defined Benefit Plan Disclosure [Line Items]
Interest cost	489	563	807
Actuarial (gain) loss	(640)	(341)	18
Net periodic benefit (credit) cost	(151)	222	825
Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Interest cost	12,506	12,558	13,377
Expected return on plan assets	(18,103)	(19,340)	(19,578)
Pension settlements	0	0	39,218
Actuarial (gain) loss	2,193	3,510	3,644
Net periodic benefit (credit) cost	$ (3,404)	$ (3,272)	$ 36,661