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Other (Notes)
 12 Months Ended
Dec. 31, 2019
Other [Abstract]  
Other Operating Income and Expense [Text Block] Other

The table below discloses the categories included in other operating expense for the years ended December 31, 2019, 2018, and 2017.

 
2019

 
2018

 
2017

Professional and contract services
$
38

 
$
37

 
$
39

Travel
2

 
2

 
2

Occupancy
15

 
10

 
7

Equipment
8

 
12

 
16

Other
10

 
6

 
6

Total
$
73

 
$
67

 
$
70