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Quarterly Financial Information (Unaudited) (Tables)
12 Months Ended
Dec. 31, 2013
Quarterly Financial Information [Line Items]  
Summarized quarterly financial data
Summarized quarterly financial information for 2013 and 2012 is as follows:
 
 
 
 
 
Consolidated Net Income After Dividends on Preferred and Preference Stock of Subsidiaries
 
Per Common Share
 
Operating
Revenues
 
Operating
Income
 
 
Basic
Earnings
 
Diluted Earnings
 
 
 
Trading
Price Range
Quarter Ended
 
Dividends
 
High
 
Low
 
(in millions)
 
 
 
 
 
 
 
 
 
 
March 2013
$
3,897

 
$
325

 
$
81

 
$
0.09

 
$
0.09

 
$
0.4900

 
$
46.95

 
$
42.82

June 2013
4,246

 
640

 
297

 
0.34

 
0.34

 
0.5075

 
48.74

 
42.32

September 2013
5,017

 
1,491

 
852

 
0.97

 
0.97

 
0.5075

 
45.75

 
40.63

December 2013
3,927

 
799

 
414

 
0.47

 
0.47

 
0.5075

 
42.94

 
40.03

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
March 2012
$
3,604

 
$
766

 
$
368

 
$
0.42

 
$
0.42

 
$
0.4725

 
$
46.06

 
$
43.71

June 2012
4,181

 
1,143

 
623

 
0.71

 
0.71

 
0.4900

 
48.45

 
44.22

September 2012
5,049

 
1,740

 
976

 
1.11

 
1.11

 
0.4900

 
48.59

 
44.64

December 2012
3,703

 
814

 
383

 
0.44

 
0.44

 
0.4900

 
47.09

 
41.75

Alabama Power [Member]
 
Quarterly Financial Information [Line Items]  
Summarized quarterly financial data
Summarized quarterly financial information for 2013 and 2012 is as follows:
Quarter Ended
Operating
Revenues
 
Operating
Income
 
Net Income After Dividends on Preferred and Preference Stock
 
(in millions)
March 2013
$
1,308

 
$
307

 
$
141

June 2013
1,392

 
357

 
173

September 2013
1,604

 
500

 
258

December 2013
1,314

 
312

 
140

 
 
 
 
 
 
March 2012
$
1,216

 
$
291

 
$
126

June 2012
1,377

 
390

 
185

September 2012
1,637

 
544

 
280

December 2012
1,290

 
271

 
113

Georgia Power [Member]
 
Quarterly Financial Information [Line Items]  
Summarized quarterly financial data
Summarized quarterly financial information for 2013 and 2012 is as follows:
Quarter Ended
Operating Revenues
 
Operating Income
 
Net Income After Dividends on Preferred and Preference Stock
 
(in millions)
March 2013
$
1,882

 
$
412

 
$
197

June 2013
2,042

 
552

 
282

September 2013
2,484

 
872

 
487

December 2013
1,866

 
404

 
208


 
 
 
 
 
March 2012
$
1,745

 
$
344

 
$
167

June 2012
2,020

 
535

 
295

September 2012
2,498

 
924

 
525

December 2012
1,735

 
400

 
181

Gulf Power [Member]
 
Quarterly Financial Information [Line Items]  
Summarized quarterly financial data
Summarized quarterly financial information for 2013 and 2012 is as follows:
Quarter Ended
Operating
Revenues
 
Operating
Income
 
Net Income After Dividends on Preference Stock
 
(in thousands)
March 2013
$
326,274

 
$
51,640

 
$
21,792

June 2013
371,173

 
69,151

 
32,582

September 2013
399,361

 
87,776

 
44,754

December 2013
343,493

 
56,436

 
25,301

 
 
 
 
 
 
March 2012
$
316,245

 
$
49,098

 
$
20,666

June 2012
370,208

 
71,465

 
34,963

September 2012
421,819

 
93,813

 
47,754

December 2012
331,490

 
53,818

 
22,549

Mississippi Power [Member]
 
Quarterly Financial Information [Line Items]  
Summarized quarterly financial data
Summarized quarterly financial information for 2013 and 2012 is as follows:
Quarter Ended
Operating
Revenues
 
Operating
Income (Loss)
 
Net Income (Loss) After Dividends on Preferred Stock
 
(in thousands)
March 2013
$
245,934

 
$
(429,148
)
 
$
(246,321
)
June 2013
306,435

 
(388,395
)
 
(219,110
)
September 2013
325,206

 
(79,890
)
 
(24,115
)
December 2013
267,582

 
(24,412
)
 
12,921

 
 
 
 
 
 
March 2012
$
228,714

 
$
30,213

 
$
25,255

June 2012
266,084

 
46,986

 
35,027

September 2012
305,419

 
66,151

 
54,625

December 2012 (Restated)
235,779

 
(46,338
)
 
(14,965
)
Southern Power [Member]
 
Quarterly Financial Information [Line Items]  
Summarized quarterly financial data
Summarized quarterly financial information for 2013 and 2012 is as follows:
Quarter Ended
Operating
Revenues
 
Operating
Income
 
Net
Income
 
(in thousands)
March 2013
$
302,947

 
$
64,673

 
$
29,192

June 2013
307,255

 
55,024

 
27,922

September 2013
364,767

 
116,497

 
85,153

December 2013
300,257

 
53,781

 
23,266

 
 
 
 
 
 
March 2012
$
253,681

 
$
56,343

 
$
29,316

June 2012
285,805

 
90,038

 
46,602

September 2012
354,971

 
119,234

 
68,376

December 2012
291,591

 
65,816

 
30,991