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Pension and Other Postretirement Benefit Plans - Schedule of Amount Recognized in Accompanying Balance Sheets (Details) - USD ($) $ in Thousands | Oct. 02, 2020 | Sep. 27, 2019
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Defined Benefit Plan Disclosure [Line Items] |  |
Liabilities relating to defined benefit pension and retirement plans | $ 568,176 | $ 575,897
U.S. Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Prepaid benefit cost included in noncurrent assets | 0 | 0
Accrued benefit cost included in current liabilities | 85 | 85
Liabilities relating to defined benefit pension and retirement plans | 57,919 | 58,245
Net amount recognized at the end of the year | 58,004 | 58,330
Non-U.S. Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Prepaid benefit cost included in noncurrent assets | 1,037 | 2,939
Accrued benefit cost included in current liabilities | 4,375 | 4,177
Liabilities relating to defined benefit pension and retirement plans | 339,049 | 340,254
Net amount recognized at the end of the year | $ 342,387 | $ 341,492

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