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Other Income (Expense), Net
 12 Months Ended
Sep. 30, 2015
Other Income and Expenses [Abstract]  
Other Income (Expense), Net
Other Income (Expense), Net

Income and expenses not related to TVA’s operating activities are summarized in the following table:
Other Income (Expense), Net
For the years ended September 30
 
 
 
 
 
 
 
2015
 
2014
 
2013
Interest income
$
24

 
$
23

 
$
23

External services
12

 
19

 
18

Gains (losses) on investments
(1
)
 
6

 
4

Miscellaneous
(6
)
 
1

 
(1
)
Total other income (expense), net
$
29

 
$
49

 
$
44