Retirement Plans (Fair Values of Qualified Plan's Assets) (Details) - USD ($) $ in Thousands	Oct. 02, 2022	Oct. 03, 2021
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 303,951	$ 409,708
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,267	1,969
Domestic equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	33,659	66,921
International equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	32,807	63,087
Investment grade
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	193,426	219,295
High yield
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6,970	10,156
Alternatives
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	12,061	26,519
Real estate
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	22,761	21,761
Quoted Prices in Active Markets for Identical (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	77,324	128,906
Quoted Prices in Active Markets for Identical (Level 1) | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Quoted Prices in Active Markets for Identical (Level 1) | Domestic equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	33,659	66,921
Quoted Prices in Active Markets for Identical (Level 1) | International equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	16,557	31,128
Quoted Prices in Active Markets for Identical (Level 1) | Investment grade
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	20,138	20,701
Quoted Prices in Active Markets for Identical (Level 1) | High yield
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6,970	10,156
Quoted Prices in Active Markets for Identical (Level 1) | Alternatives
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Quoted Prices in Active Markets for Identical (Level 1) | Real estate
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	175,555	200,563
Significant Other Observable Inputs (Level 2) | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,267	1,969
Significant Other Observable Inputs (Level 2) | Domestic equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Significant Other Observable Inputs (Level 2) | International equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Significant Other Observable Inputs (Level 2) | Investment grade
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	173,288	198,594
Significant Other Observable Inputs (Level 2) | High yield
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Significant Other Observable Inputs (Level 2) | Alternatives
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Significant Other Observable Inputs (Level 2) | Real estate
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) | Domestic equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) | International equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) | Investment grade
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) | High yield
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) | Alternatives
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) | Real estate
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 0	$ 0