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Other Income (Expense), Net
 3 Months Ended
Dec. 31, 2011
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 Three Months Ended December 31
 
2011
 
2010
External services
$
4

 
$
5

Interest income
2

 
2

Gains (losses) on investments
1

 
2

Miscellaneous
2

 
2

Total other income (expense), net
$
9

 
$
11