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Other Income (Expense), Net
3 Months Ended
Dec. 31, 2024
Other Income and Expenses [Abstract]  
Other Income (Expense), Net Other Income, Net
Income and expenses not related to TVA's operating activities are summarized in the following table:
Other Income, Net
(in millions)
 Three Months Ended December 31
 20242023
Interest income$10 $10 
External services
Gains (loss) on investments(2)
Total other income, net$17 $23