Pension and Other Postretirement Benefit Plans - Schedule of Amount Recognized in Accompanying Balance Sheets (Details) - USD ($) $ in Thousands	Oct. 02, 2020	Sep. 27, 2019
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