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Pension and Retiree Medical Benefits (Tables)
 6 Months Ended
Jun. 17, 2017
Retirement Benefits [Abstract]  
Schedule of Defined Benefit Plans Disclosures [Table Text Block]
The components of net periodic benefit cost for pension and retiree medical plans are as follows: 
 
12 Weeks Ended
 
Pension

Retiree Medical
 
6/17/2017


6/11/2016


6/17/2017


6/11/2016


6/17/2017


6/11/2016

 
U.S.

International

 
Service cost
$
92


$
90


$
21


$
21


$
7


$
7

Interest cost
108


112


21


24


8


10

Expected return on plan assets
(196
)

(192
)

(40
)

(42
)

(5
)

(6
)
Amortization of prior service cost/(credits)
1


—


—


—


(6
)

(8
)
Amortization of net losses/(gains)
28


39


12


10


(3
)

(1
)

33


49


14


13


1


2

Settlement/curtailment loss
—

 
—

 
—

 
6

 
—

 
—

Special termination benefits
1


1


—


—


—


—

Total expense
$
34


$
50


$
14


$
19


$
1


$
2