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Basis of Presentation (Tables)
6 Months Ended
Jun. 30, 2012
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract]  
Schedule of Variable Interest Entities [Table Text Block]
 
June 30, 2012
 
December 31, 2011
ASSETS
 
 
 
Restricted cash
$
92

 
$
107

Accounts receivable
37

 
34

Securitized regulatory assets
497

 
577

Other assets
9

 
10

 
$
635

 
$
728

LIABILITIES
 
 
 
Accounts payable and accrued current liabilities
$
12

 
$
14

Current portion long-term debt, including capital leases
168

 
164

Other current liabilities
48

 
55

Securitization bonds
391

 
479

Other long-term liabilities
7

 
7

 
$
626

 
$
719