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Retirement Plans (Effect Of Change In The Assumed Health Care Cost Trend Rate) (Details)
$ in Thousands
12 Months Ended
Oct. 02, 2016
USD ($)
Compensation and Retirement Disclosure [Abstract]  
Total interest and service cost, 1% Point Increase $ 156
Total interest and service cost, 1% Point Decrease (132)
Postretirement benefit obligation, 1% Point Increase 3,373
Postretirement benefit obligation, 1% Point Decrease $ (2,875)