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Pension, Postretirement, and Postemployement Obligations (Tables)
 3 Months Ended
Dec. 27, 2015
Pension Postretirement And Postemployment Defined Benefit Plans [Abstract]  
Schedule of Defined Benefit Plans Disclosures [Table Text Block]
The net periodic postretirement cost (benefit) components for our postretirement plans are as follows:
PENSION PLANS
13 Weeks Ended
 
(Thousands of Dollars)
December 27
2015

December 28
2014

 
 
 
Service cost for benefits earned during the period
49

226

Interest cost on projected benefit obligation
1,515

1,859

Expected return on plan assets
(2,174
)
(2,466
)
Amortization of net loss
599

420

Amortization of prior service benefit
(34
)
(34
)
Pension expense (benefit)
(45
)
5

 
 
 
POSTRETIREMENT MEDICAL PLANS
13 Weeks Ended
 
(Thousands of Dollars)
December 27
2015

December 28
2014

 
 
 
Service cost for benefits earned during the period
16

39

Interest cost on projected benefit obligation
156

211

Expected return on plan assets
(331
)
(361
)
Amortization of net gain
(273
)
(347
)
Amortization of prior service benefit
(365
)
(365
)
Postretirement medical benefit
(797
)
(823
)