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Basis of Presentation (Tables)
3 Months Ended
Mar. 31, 2013
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract]  
Schedule of Variable Interest Entities [Table Text Block]

 
March 31,
 
December 31,
 
2013
 
2012
 
(In millions)
ASSETS
 
 
 
Restricted cash
$
45

 
$
102

Accounts receivable
35

 
34

Securitized regulatory assets
369

 
413

Other assets
7

 
7

 
$
456

 
$
556

 
 
 
 
LIABILITIES
 
 
 
Accounts payable and accrued current liabilities
$
2

 
$
11

Current portion long-term debt, including capital leases
189

 
177

Current regulatory liabilities
46

 
50

Securitization bonds
201

 
302

Other long term liabilities
8

 
7

 
$
446

 
$
547