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Other Income (Expense), Net
3 Months Ended
Dec. 31, 2020
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 
 Three Months Ended
December 31
 20202019
Interest income$$
External services
Gains (losses) on investments
Miscellaneous(1)— 
Total Other income (expense), net$15 $12