XML 77 R43.htm IDEA: XBRL DOCUMENT v3.3.1.900
Goodwill And Other Intangibles (Tables)
 12 Months Ended
Dec. 31, 2015
Power [Member]  
Goodwill [Line Items]  
Expenses Related To Emissions And Renewable Energy Requirements
Such expenses for the years ended December 31, 2015, 2014 and 2013 were as follows:
 
 
 
 
 
 
 
 
 
 
 
 
Years Ended December 31,
 
 
 
 
2015
 
2014
 
2013
 
 
 
 
Millions
 
 
Emissions Expense
 
$
13

 
$
10

 
$
6

 
 
Renewable Energy Expense
 
$
91

 
$
59

 
$
26