Retirement Plans (Components of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Sep. 29, 2024 |
Oct. 01, 2023 |
Oct. 02, 2022 |
|
| 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 | $ 6,843 | $ 6,967 | $ 303 |
| Qualified Plan | |||
| Defined Benefit Plan Disclosure [Line Items] | |||
| Interest cost | 15,791 | 16,068 | 12,506 |
| Expected return on plan assets | (14,982) | (15,105) | (18,103) |
| Actuarial (gain) loss | 2,403 | 2,349 | 2,193 |
| Net periodic benefit (credit) cost | 3,212 | 3,312 | (3,404) |
| SERP | |||
| Defined Benefit Plan Disclosure [Line Items] | |||
| Interest cost | 3,188 | 3,149 | 2,173 |
| Actuarial (gain) loss | 632 | 718 | 1,666 |
| Amortization of unrecognized prior service cost | 14 | 19 | 19 |
| Net periodic benefit (credit) cost | 3,834 | 3,886 | 3,858 |
| Postretirement Health Plans | |||
| Defined Benefit Plan Disclosure [Line Items] | |||
| Interest cost | 711 | 700 | 489 |
| Actuarial (gain) loss | (914) | (932) | (640) |
| Net periodic benefit (credit) cost | $ (203) | $ (232) | $ (151) |