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Related Party Transactions (Tables)
 12 Months Ended
Dec. 31, 2017
Related Party Transactions [Abstract]  
Schedule of Related Party Transactions [Table Text Block]
 
December 31,
 
2017
 
2016
Balance sheet location
 
 
 
Accounts receivable, net
$
34

 
$
37

Other current assets
8

 
—

Deferred charges and other assets
23

 
10

 
$
65

 
$
47

 
 
 
 
Current portion of debt
$
6

 
$
6

Accounts payable
18

 
28

Other current liabilities
4

 
9

Long-term debt
155

 
161

Other long-term liabilities and deferred credits
35

 
29

 
$
218

 
$
233

 
Year Ended December 31,
 
2017
 
2016
 
2015
Income statement location
 
 
 
 
 
Revenues
 
 
 
 
 
Services
$
73

 
$
71

 
$
72

Product sales and other
89

 
71

 
71

 
$
162

 
$
142

 
$
143

 
 
 
 
 
 
Operating Costs, Expenses and Other
 
 
 
 
 
Costs of sales
$
20

 
$
38

 
$
60

Other operating expenses
100

 
75

 
55