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Related Party Transactions (Tables)
 6 Months Ended
Jun. 30, 2016
Related Party Transactions [Abstract]  
Related Party Transactions [table text block]
The following table provides a summary of the related party activity included in our consolidated statements of operations:
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
 
2016
 
2015
 
2016
 
2015
 
 
 
(Restated)
 
 
 
(Restated)

Operating revenues
$
4

 
$
4

 
$
9

 
$
9

Operating and maintenance
3

 
4

 
7

 
8

General and administrative
7

 
8

 
14

 
16

Interest income — affiliates
7

 
1

 
14

 
1

Income from unconsolidated affiliates
—

 
(6
)
 
—

 
(2
)