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Segment Information (Tables)
 3 Months Ended
Apr. 01, 2017
Segment Reporting [Abstract]  
Net Sales and Operating Earnings by Segment
The following table summarizes Net sales by segment: 
 
Three Months Ended
  
April 1,
2017
 
April 2,
2016
Products
$
703

 
$
702

Services
578

 
491

 
$
1,281

 
$
1,193

The following table summarizes the Operating earnings by segment: 
 
Three Months Ended
  
April 1,
2017
 
April 2,
2016
Products
$
89

 
$
51

Services
87

 
49

Operating earnings
176

 
100

Total other expense
(56
)
 
(78
)
Earnings before income taxes
$
120

 
$
22