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v3.19.3

Related Parties Related Parties (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017
Related Parties |  |  |  |  |  |  |  |  |  |  |
Remaining appropriation investment | $ 258 |  |  |  |  |  |  |  | $ 258 |  |
Current borrowing capacity | 150 |  |  |  |  |  |  |  | 150 |  |
Revenue from sales of electricity | 3,239 | $ 2,604 | $ 2,750 | $ 2,725 | $ 3,185 | $ 2,707 | $ 2,792 | $ 2,549 | 11,318 | $ 11,233 | $ 10,739
Other income |  |  |  |  |  |  |  |  |  | 0 | 0
Return on power program appropriation investment |  |  |  |  |  |  |  |  | (6) | (5) | (5)
Related Party Transactions |  |  |  |  |  |  |  |  |  |  |
Related Parties |  |  |  |  |  |  |  |  |  |  |
Revenue from sales of electricity |  |  |  |  |  |  |  |  | 118 | 122 | 126
Other income |  |  |  |  |  |  |  |  | 258 | 240 | 136
Operating expenses |  |  |  |  |  |  |  |  | 222 | 220 | 216
Additions to property, plant, and equipment |  |  |  |  |  |  |  |  | 10 | 8 | 16
Cash and cash equivalents | 45 |  |  |  | 46 |  |  |  | 45 | 46 | 46
Accounts receivable, net | 76 |  |  |  | 60 |  |  |  | 76 | 60 | 84
Receivables, Long-term Contracts or Programs | 53 |  |  |  | 46 |  |  |  | 53 | 46 | 35
Accounts payable and accrued liabilities | 69 |  |  |  | 69 |  |  |  | 69 | 69 | 71
Long-term power bonds, net | $ 0 |  |  |  | $ 0 |  |  |  | 0 | 0 | 1
Return on power program appropriation investment |  |  |  |  |  |  |  |  | $ (6) | $ (5) | $ (5)

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