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Organization And Basis Of Presentation (Tables)
9 Months Ended
Sep. 30, 2011
Organization And Basis Of Presentation 
Disclosure Of Unbilled Revenues Within Restricted Receivables Of Variable Interest Entities And Receivables
     September 30,
2011		      December 31,
2010		  
     (in millions)  

Duke Energy

    $ 599       $ 751   

Duke Energy Carolinas

      265         322   

Duke Energy Ohio(a)

     46         54   

Duke Energy Indiana

      6         12   

 

(a) Primarily relates to wholesale sales within the Commercial Power segment.