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Pension and Retiree Medical Benefits Periodic Benefit Cost (Tables)
 3 Months Ended
Mar. 23, 2019
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
 
3/23/2019

 
3/24/2018

 
3/23/2019

 
3/24/2018

 
3/23/2019

 
3/24/2018

 
U.S.
 
International
 
 
Service cost
$
88

 
$
100

 
$
13

 
$
18

 
$
5

 
$
7

Interest cost
125

 
111

 
17

 
17

 
8

 
8

Expected return on plan assets
(206
)
 
(218
)
 
(33
)
 
(36
)
 
(4
)
 
(4
)
Amortization of prior service cost/(credits)
2

 
1

 
—

 
—

 
(4
)
 
(5
)
Amortization of net losses/(gains)
37

 
41

 
5

 
8

 
(6
)
 
(2
)
 
46

 
35

 
2

 
7

 
(1
)
 
4

Special termination benefits (a)
(5
)
 
3

 
—

 
1

 
—

 
—

Total
$
41

 
$
38

 
$
2

 
$
8

 
$
(1
)
 
$
4