XML 39 R43.htm IDEA: XBRL DOCUMENT v2.4.0.8
Goodwill (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended 1 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Oct. 31, 2013
Subsequent Event
Sep. 30, 2013
Regulated Distribution
Sep. 30, 2012
Regulated Distribution
Sep. 30, 2013
Regulated Independent Transmission
Sep. 30, 2013
Competitive Energy Services
Sep. 30, 2012
Competitive Energy Services
Sep. 30, 2013
Corporate and Other
Goodwill [Line Items]                  
Goodwill, Other Changes     $ 67            
Goodwill [Roll Forward]                  
Goodwill 6,447 6,444   5,025 5,025 526 896 893 0
Classification to Assets Held for Sale (29) [1]     0   0 (29) [1]   0
Goodwill $ 6,418 $ 6,444   $ 5,025 $ 5,025 $ 526 $ 867 $ 893 $ 0
[1] See Note 16, Discontinued Operations and Assets Held for Sale.