XML 14 R39.htm IDEA: XBRL DOCUMENT v2.4.0.6
Impairments (Tables)
3 Months Ended
Mar. 31, 2013
Impairments Tables [Abstract]  
Details of Impairment of Long-Lived Assets Held and Used by Asset [Table Text Block]
  Three Months Ended
  March 31,
  2013 2012
       
  (in millions)
Beaver Valley $ 46 $ -
Kelanitissa   -   5
Other   2   5
Total asset impairment expense $ 48 $ 10