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Business Segments (Tables)
 9 Months Ended
Sep. 30, 2012
Segment Reporting [Abstract]  
Information Related to Business Segments
The following is information (including the elimination of intercompany transactions) related to Edison International's reportable segments:
 
Three months ended
September 30,
 
Nine months ended
September 30,
(in millions)
2012
 
2011
 
2012
 
2011
Operating Revenue:
 
 
 
 
 
 
 
Electric utility
$
3,731

 
$
3,386

 
$
8,794

 
$
8,063

Competitive power generation
340

 
437

 
1,009

 
1,277

Parent and other2
(1
)
 
(1
)
 
(3
)
 
(3
)
Consolidated Edison International
$
4,070

 
$
3,822

 
$
9,800

 
$
9,337

Net Income (Loss) attributable to Edison International:
 
 
 
 
 
 
 
Electric utility
$
363

 
$
406

 
$
736

 
$
838

Competitive power generation1
(137
)
 
33

 
(331
)
 
(17
)
Parent and other2
(36
)
 
(13
)
 
(48
)
 
(19
)
Consolidated Edison International
$
190

 
$
426

 
$
357

 
$
802

Segment balance sheet information was:
(in millions)
September 30,
2012
 
December 31,
2011
Total Assets:
 
 
 
Electric utility
$
43,059

 
$
40,315

Competitive power generation
7,934

 
8,392

Parent and other2
(448
)
 
(668
)
Consolidated Edison International
$
50,545

 
$
48,039

1 
Includes earnings (losses) from discontinued operations of $(76) million and $15 million for the three months ended September 30, 2012 and 2011, respectively, and $(129) million and $(3) million for the nine months ended September 30, 2012 and 2011, respectively.
2 
Includes amounts from Edison International (parent) and other Edison International subsidiaries that are not significant as a reportable segment, as well as intercompany eliminations.