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Accounts Receivable, Net Accounts Receivable, Net (Tables)
12 Months Ended
Sep. 30, 2021
Accounts Receivable, after Allowance for Credit Loss [Abstract]  
Accounts Receivable, Net
Accounts receivable primarily consist of amounts due from customers for power sales.  The table below summarizes the types and amounts of TVA's accounts receivable:
Accounts Receivable, Net
At September 30
 20212020
Power receivables$1,480 $1,401 
Other receivables86 128 
Accounts receivable, net(1)
$1,566 $1,529