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Segment and Related Information (Tables)
3 Months Ended
Mar. 31, 2012
Segment and Related Information [Abstract]  
Financial data for business segments
                                     
    Electric Utilities                    
   

    Traditional    

    Operating    

    Companies    

      Southern    
    Power    
     Eliminations         Total            

  All

  Other

    Eliminations       Consolidated    
   

 

    (in millions)

Three Months Ended March 31, 2012:

                                   

Operating revenues

  $  3,449   $   254   $            (114)   $  3,589           $     38   $  (23)   $  3,604

Segment net income *

         339          29                      1          369                    2         (3)          368

Total assets at March 31, 2012

  $55,698   $3,596   $              (81)   $59,213           $1,086   $(425)   $59,874

 

                   

Three Months Ended March 31, 2011:

                                   

Operating revenues

  $  3,810   $   282   $              (98)   $  3,994           $     38   $  (20)   $  4,012

Segment net income (loss)*

         385          38                    —          423                    1         (2)          422

Total assets at December 31, 2011

  $54,622   $3,581   $            (127)   $58,076           $1,592   $(401)   $59,267

 

* After dividends on preferred and preference stock of subsidiaries

Financial data for products and services
                 
     Electric Utilities’ Revenues

Period

      Retail   Wholesale   Other       Total    
   

 

    (in millions)

Three Months Ended March 31, 2012

  $3,092   $349   $148   $3,589

Three Months Ended March 31, 2011

  $3,396   $449   $149   $3,994