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Other Income (Expense), Net (Tables)
3 Months Ended
Dec. 31, 2019
Other Income and Expenses [Abstract]  
Other Income (Expense), Net
17.  Other Income (Expense), Net

Income and expenses not related to TVA's operating activities are summarized in the following table:
Other Income (Expense), Net 
 
Three Months Ended
December 31
 
2019
 
2018
Bellefonte deposit
$

 
$
21

Interest income
5

 
6

External services
2

 
3

Gains (losses) on investments
5

 
(7
)
Miscellaneous

 
1

Total Other income (expense), net
$
12

 
$
24