Retirement Plans (Components Of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Apr. 15, 2018	Apr. 16, 2017	Apr. 15, 2018	Apr. 16, 2017
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Interest cost		$ 5,160	$ 5,248	$ 12,039	$ 12,244
Service cost		516	504	1,203	1,177
Expected return on plan assets		(6,510)	(6,494)	(15,190)	(15,153)
Actuarial loss	[1]	1,123	1,411	2,621	3,292
Amortization of unrecognized prior service cost	[1]	34	35	79	82
Net periodic benefit cost		323	704	752	1,642
Postretirement Healthcare Plans
Defined Benefit Plan Disclosure [Line Items]
Interest cost		220	231	514	540
Actuarial loss	[1]	(6)	37	(14)	87
Net periodic benefit cost		$ 214	$ 268	$ 500	$ 627

[1] (1)Amounts were reclassified from accumulated OCI into net earnings as a component of selling, general and administrative expenses.