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v3.23.1

Debt and Other Obligations Debt Outstanding (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Sep. 30, 2022
--- | --- | ---
Short-term debt |  |
Short-term debt, net | $ 572 | $ 1,172
Current maturities of power bonds | 29 | 29
Current maturities of long-term debt of variable interest entities | 35 | 39
Total current debt outstanding, net | 636 | 1,240
Long-term debt |  |
Long-term power bonds | 18,997 | 17,950
Unamortized discounts, premiums, issues costs, and other | 132 | 124
Total long-term debt, net | 19,816 | 18,794
Total outstanding debt | 20,452 | 20,034
Long-term debt of variable interest entities, net | 951 | 968
Net exchange gain from currency transaction, noncurrent | $ 103 | $ 150

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