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Related Parties Related Parties (Tables)
12 Months Ended
Sep. 30, 2018
Related Party Transactions [Abstract]  
Related Party Transactions
Transactions with agencies of the federal government were as follows:
Related Party Transactions
For the years ended, or at, September 30
 
2018
 
2017
 
2016
Revenue from sales of electricity
$
122

 
$
126

 
$
126

Other income
240

 
136

 
161

Expenditures


 


 


Operating expenses
220

 
216

 
216

Additions to property, plant, and equipment
8

 
16

 
32

Cash and cash equivalents
46

 
46

 
54

Accounts receivable, net
60

 
84

 
68

Long-term accounts receivable
46


35


61

Accounts payable and accrued liabilities
69

 
71

 
77

Long-term power bonds, net

 
1

 
4

Return on Power Program Appropriation Investment
5

 
5

 
6