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Other Income (Expense), Net Other Income (Expense), Net (Tables)
12 Months Ended
Sep. 30, 2020
Other Income and Expenses [Abstract]  
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
 202020192018
Bellefonte deposit$— $21 $— 
Interest income18 25 23 
External services12 13 14 
Gains (losses) on investments
Miscellaneous(3)— 
Total other income (expense), net$36 $62 $50