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Segment and Related Information (Tables)
 9 Months Ended
Sep. 30, 2013
Segment Reporting [Abstract]  
Financial data for business segments
Financial data for business segments and products and services was as follows:
 
 
Electric Utilities
 
 
 
 
 
 
 
Traditional
Operating
Companies
 
Southern
Power
 
Eliminations
 
Total
 
All
Other
 
Eliminations
 
Consolidated
 
(in millions)
Three Months Ended September 30, 2013:
 
 
 
 
 
 
 
 
 
 
 
 
 
Operating revenues
$
4,744

 
$
365

 
$
(104
)
 
$
5,005

 
$
35

 
$
(23
)
 
$
5,017

Segment net income (loss)(a)(b)
765

 
85

 
—

 
850

 
(1
)
 
3

 
852

Nine Months Ended September 30, 2013:
 
 
 
 
 
 
 
 
 
 
 
 
 
Operating revenues
$
12,430

 
$
975

 
$
(285
)
 
$
13,120

 
$
108

 
$
(68
)
 
$
13,160

Segment net income (loss)(a)(c)
1,099

 
142

 
—

 
1,241

 
(12
)
 
1

 
1,230

Total assets at September 30, 2013
$
59,732

 
$
4,449

 
$
(153
)
 
$
64,028

 
$
1,090

 
$
(421
)
 
$
64,697

Three Months Ended September 30, 2012:
 
 
 
 
 
 
 
 
 
 
 
 
 
Operating revenues
$
4,794

 
$
355

 
$
(116
)
 
$
5,033

 
$
36

 
$
(20
)
 
$
5,049

Segment net income (loss)(a)
908

 
68

 
1

 
977

 
1

 
(2
)
 
976

Nine Months Ended September 30, 2012:
 
 
 
 
 
 
 
 
 
 
 
 
 
Operating revenues
$
12,232

 
$
894

 
$
(338
)
 
$
12,788

 
$
109

 
$
(63
)
 
$
12,834

Segment net income (loss)(a)
1,797

 
144

 
—

 
1,941

 
30

 
(4
)
 
1,967

Total assets at December 31, 2012
$
58,600

 
$
3,780

 
$
(129
)
 
$
62,251

 
$
1,116

 
$
(218
)
 
$
63,149

(a) After dividends on preferred and preference stock of subsidiaries.
(b) Segment net income (loss) for the three months ended September 30, 2013 includes a $150 million pre-tax charge ($93 million after tax) for an estimated probable loss on the Kemper IGCC. See Note (B) under "Integrated Coal Gasification Combined Cycle – Kemper IGCC Cost Estimate" herein for additional information.
(c) Segment net income (loss) for the nine months ended September 30, 2013 includes $1.1 billion in pre-tax charges ($704 million after tax) for estimated probable losses on the Kemper IGCC. See Note (B) under "Integrated Coal Gasification Combined Cycle – Kemper IGCC Cost Estimate" herein for additional information.
Financial data for products and services
Products and Services
 
 
Electric Utilities' Revenues
Period
 
Retail
 
Wholesale
 
Other
 
Total
 
 
(in millions)
Three Months Ended September 30, 2013
 
$
4,319

 
$
520

 
$
166

 
$
5,005

Three Months Ended September 30, 2012
 
4,379

 
497

 
157

 
5,033

 
 
 
 
 
 
 
 
 
Nine Months Ended September 30, 2013
 
$
11,237

 
$
1,406

 
$
477

 
$
13,120

Nine Months Ended September 30, 2012
 
11,068

 
1,261

 
459

 
12,788