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Basis of Presentation (Tables)
12 Months Ended
Dec. 31, 2012
Variable Interest Entity [Line Items]  
Schedule of Variable Interest Entities [Table Text Block]
 December 31, 2012  December 31, 2011
  Exelon (a) Generation BGE (b) Exelon Generation BGE (b)
Current assets$ 550 $ 519 $ 30 $ 15 $ 15 $ 30
Noncurrent assets  1,802   1,762   -   784   784   -
 Total assets$ 2,352 $ 2,281 $ 30 $ 799 $ 799 $ 30
                   
Current liabilities$ 685 $ 613 $ 71 $ 181 $ 181 $ 69
Noncurrent liabilities  837   532   265   77   77   332
 Total liabilities$ 1,522 $ 1,145 $ 336 $ 258 $ 258 $ 401

  • Includes certain purchase accounting adjustments not pushed down to the BGE standalone entity.
  • Amounts related to BGE are presented for the standalone entity as of both December 31, 2012 and 2011.