Retirement Plans - Schedule of Future Cash Flows (Details) $ in Thousands	6 Months Ended
	Apr. 11, 2021 USD ($)
SERP
Defined Benefit Plan Disclosure [Line Items]
Net year-to-date contributions	$ 3,060
Remaining estimated net contributions during fiscal 2021	2,163
Postretirement Healthcare Plans
Defined Benefit Plan Disclosure [Line Items]
Net year-to-date contributions	517
Remaining estimated net contributions during fiscal 2021	$ 743