Retirement Plans (Components Of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Apr. 16, 2017	Apr. 10, 2016	Apr. 16, 2017	Apr. 10, 2016
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost		$ 5,248	$ 5,580	$ 12,244	$ 13,020
Service cost		504	1,212	1,177	2,828
Expected return on plan assets		(6,494)	(5,021)	(15,153)	(11,715)
Actuarial loss	[1]	1,411	944	3,292	2,201
Amortization of unrecognized prior service cost	[1]	35	55	82	129
Net periodic benefit cost		704	2,770	1,642	6,463
Postretirement Healthcare Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost		231	291	540	680
Actuarial loss	[1]	37	51	87	118
Net periodic benefit cost		$ 268	$ 342	$ 627	$ 798

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