Retirement Plans (Schedule Of Future Cash Flows) (Details) - USD ($)	6 Months Ended
Apr. 14, 2019	Jan. 01, 2018
Defined Benefit Plan Disclosure [Line Items]
Minimum required contribution for retirement plans		$ 0
SERP
Defined Benefit Plan Disclosure [Line Items]
Net year-to-date contributions	$ 2,989,000
Remaining estimated net contributions during fiscal 2019	2,100,000
Postretirement Healthcare Plans
Defined Benefit Plan Disclosure [Line Items]
Net year-to-date contributions	682,000
Remaining estimated net contributions during fiscal 2019	$ 700,000

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration