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Business Segments (Tables)
 12 Months Ended
Dec. 31, 2011
Segment Reporting [Abstract]  
Information Related to Reportable Segments
The following is information (including the elimination of intercompany transactions) related to Edison International's reportable segments:
(in millions)
Electric
Utility
 
Competitive
Power
Generation
 
Parent and
Other2
 
Consolidated
Edison
International
 
Year ended December 31, 2011
Operating revenue
$
10,577

 
$
2,186

 
$
(3
)
 
$
12,760

Depreciation, decommissioning and amortization
1,426

 
310

 
1

 
1,737

Interest and dividend income
5

 
32

 
—

 
37

Equity in income from partnerships and unconsolidated subsidiaries – net
—

 
86

 
—

 
86

Interest expense – net of amounts capitalized
463

 
324

 
21

 
808

Income tax expense (benefit) – continuing operations
601

 
(864
)
 
(25
)
 
(288
)
Income (loss) from continuing operations
1,144

 
(1,087
)
 
(33
)
 
24

Net income (loss) attributable to common shareholders
1,085

 
(1,089
)
1 
(33
)
 
(37
)
Total assets
40,315

 
8,392

 
(668
)
 
48,039

Capital expenditures
4,122

 
686

 
—

 
4,808

 
 
Year ended December 31, 2010
Operating Revenue
$
9,983

 
$
2,429

 
$
(3
)

$
12,409

Depreciation, decommissioning and amortization
1,273

 
249

 
—

 
1,522

Interest and dividend income
7

 
30

 
(6
)
 
31

Equity in income (loss) from partnerships and unconsolidated subsidiaries-net
—

 
106

 
—

 
106

Interest expense -net of amounts capitalized
429

 
264

 
10

 
703

Income tax expense (benefit) - continuing operations
440

 
(36
)
 
(50
)
 
354

Income (loss) from continuing operations
1,092

 
219

 
(8
)
 
1,303

Net income (loss) attributable to common shareholders
1,040

3 
224

1,4 
(8
)
5 
1,256

Total assets
35,906

 
9,597

 
27

 
45,530

Capital expenditures
3,780

 
763

 
—

 
4,543

 
 
Year ended December 31, 2009
Operating revenue
$
9,965

 
$
2,399

 
$
(3
)
 
12,361

Depreciation, decommissioning and amortization
1,178

 
239

 
1

 
1,418

Interest and dividend income
11

 
30

 
(9
)
 
32

Equity in income from partnerships and unconsolidated subsidiaries – net
—

 
89

 
(47
)
 
42

Interest expense – net of amounts capitalized
420

 
306

 
6

 
732

Income tax expense (benefit) – continuing operations
249

 
(284
)
 
(63
)
 
(98
)
Income (loss) from continuing operations
1,371

 
(391
)
 
(28
)
 
952

Net income (loss) attributable to common shareholders
1,226

3 
(395
)
1,4 
18

5 
849

Total assets
32,474

 
9,543

 
(573
)
 
41,444

Capital expenditures
2,999

 
283

 
—

 
3,282

1  
Includes earnings (losses) from discontinued operations of $(3) million, $4 million and $(7) million for the years ended December 31, 2011, 2010 and 2009, 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.
3 
Includes earnings of $95 million and $306 million for the years ended December 31, 2010 and 2009, respectively, related to the federal and state impacts of the Global Settlement. See Note 7.
4 
Includes earnings (losses) of $52 million and $(610) million for the years ended December 31, 2010 and 2009, respectively, related to termination of Edison Capital's cross-border leases and the federal and state impacts of the Global Settlement on EMG. See Note 7.
5 
Includes earnings of $28 million and $50 million for the years ended December 31, 2010 and 2009, respectively, related to the federal and state impacts of the Global Settlement. See Note 7.