Retirement Plans (Fair Value of Plan Assets of Pension Plans) (Details) - USD ($) $ in Thousands	Oct. 01, 2023	Oct. 02, 2022	Oct. 03, 2021
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 275,143	$ 303,951
Quoted Prices in Active Markets for Identical (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	77,324
Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	165,445	51,072
Cash & cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,266	2,267
Cash & cash equivalents | Quoted Prices in Active Markets for Identical (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Cash & cash equivalents | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Domestic equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		33,659
Domestic equities | Quoted Prices in Active Markets for Identical (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		33,659
Domestic equities | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
International equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	30,879	32,807
International equities | Quoted Prices in Active Markets for Identical (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	16,557
International equities | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	30,879	16,250
Liability-hedging assets
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	184,085	193,426
Liability-hedging assets | Quoted Prices in Active Markets for Identical (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	20,138
Liability-hedging assets | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	77,653	0
High yield
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		6,970
High yield | Quoted Prices in Active Markets for Identical (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		6,970
High yield | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
Alternative investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	28,378	12,061
Alternative investments | Quoted Prices in Active Markets for Identical (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Alternative investments | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	28,378	12,061
Real estate
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	28,535	22,761
Real estate | Quoted Prices in Active Markets for Identical (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Real estate | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	28,535	22,761
Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	266,345	293,342	$ 410,053
Accumulated benefit obligation	266,345	293,342
Fair value of plan assets	275,143	303,951	409,708
SERP
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	53,513	56,891	75,225
Accumulated benefit obligation	53,513	56,891
Fair value of plan assets	$ 0	$ 0	$ 0