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Variable Interest Entities and Unconsolidated Investments (Tables)
 6 Months Ended
Jun. 30, 2012
Variable Interest Entities and Unconsolidated Investments [Abstract]  
Schedule of Equity Method Investments
At June 30, 2012 and December 31, 2011, our equity method investments included on our Consolidated Condensed Balance Sheets were comprised of the following (in millions):
 
 
Ownership Interest as of June 30, 2012
 
June 30, 2012
 
December 31, 2011
Greenfield LP
50%
 
$
69

 
$
72

Whitby
50%
 
7

 
8

Total investments
 
 
$
76

 
$
80
Income/Loss from Unconsolidated Investments in Power Plants and Distributions
Our equity interest in the net income (loss) from Greenfield LP and Whitby for the three and six months ended June 30, 2012 and 2011 is recorded in (income) loss from unconsolidated investments in power plants. The following table sets forth details of our (income) loss from unconsolidated investments in power plants for the periods indicated (in millions):
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2012
 
2011
 
2012
 
2011
Greenfield LP
$
(2
)
 
$
4

 
$
(8
)
 
$
(1
)
Whitby
(3
)
 
(2
)
 
(6
)
 
(6
)
Total
$
(5
)
 
$
2

 
$
(14
)
 
$
(7
)