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Retirement Plans (Components Of Net Periodic Benefit Cost) (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Jul. 07, 2019
USD ($)
Jul. 08, 2018
USD ($)
Jul. 07, 2019
USD ($)
defined_benefit_plan
healthcare_plan
Jul. 08, 2018
USD ($)
Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract]        
Number of sponsored defined benefit pension plans | defined_benefit_plan     2  
Number of postretirement health care plans | healthcare_plan     2  
Defined Benefit Plan Disclosure [Line Items]        
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets     6.20%  
Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Interest cost $ 5,286 $ 5,159 $ 17,619 $ 17,198
Service cost 0 114 0 379
Expected return on plan assets [1] (6,077) (6,108) (20,257) (20,360)
Actuarial gain (2) [2] 914 1,124 3,046 3,745
Amortization of unrecognized prior service cost [2] 27 34 89 113
Net periodic benefit cost 150 323 497 1,075
Postretirement Healthcare Plans        
Defined Benefit Plan Disclosure [Line Items]        
Interest cost 229 220 766 734
Actuarial gain (2) [2] (37) (6) (122) (20)
Net periodic benefit cost $ 192 $ 214 $ 644 $ 714
[1]
Determined as of the beginning of the year based on a return on asset assumption of 6.2%.
[2] Amounts were reclassified from accumulated OCI into net earnings as a component of “Other pension and post-retirement expenses, net