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Variable Interest Entities and Unconsolidated Investments in Power Plants (Tables)
 3 Months Ended
Mar. 31, 2018
Variable Interest Entities and Unconsolidated Investments [Abstract]  
Schedule of equity method investments
At March 31, 2018 and December 31, 2017, our equity method investments included on our Consolidated Condensed Balance Sheets were comprised of the following (in millions):
 
Ownership Interest as of
March 31, 2018
 
March 31, 2018
 
December 31, 2017
Greenfield LP
50%
 
$
95

 
$
92

Whitby
50%
 
7

 
6

Calpine Receivables
100%
 
8

 
8

Total investments in unconsolidated subsidiaries
 
 
$
110

 
$
106
Income (loss) from unconsolidated investments in power plants
The following table sets forth details of our (income) from unconsolidated subsidiaries for the periods indicated (in millions):
 
Three Months Ended March 31,
 
2018
 
2017
Greenfield LP
$
(2
)
 
$
(2
)
Whitby
(4
)
 
(2
)
Total
$
(6
)

$
(4
)