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Noncontrolling Interests Noncontrolling Interests (Tables)
 12 Months Ended
Dec. 31, 2015
MidAmerican Funding, LLC and Subsidiaries [Domain]  
Noncontrolling Interest [Line Items]  
Schedule of Other Nonoperating Income (Expense) [Table Text Block]
as shown on the Consolidated Statements of Operations, includes the following other income (expense) items for the years ended December 31 (in millions):
 
2015
 
2014
 
2013
 
 
 
 
 
 
Corporate-owned life insurance income
$
4

 
$
8

 
$
15

Gains on sales of assets and other investments
13

 
—

 
1

Leverage leases
1

 
5

 
2

Other, net
1

 
5

 
4

Total
$
19

 
$
18

 
$
22


MidAmerican Funding recognized a $13 million pre-tax gain on the sale of an investment in a generating facility lease in 2015.