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v3.24.3

Summary of Significant Accounting Policies [Table Text Block] | 12 Months Ended
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Sep. 30, 2024
Accounting Policies [Abstract] |
Property, Plant, and Equipment Depreciation Rates | Average depreciation rates by asset class are as follows:
Property, Plant, and Equipment Depreciation Rates At September 30 (percent)
| 2024 |  | 2023 |  | 2022
Asset Class |  |  |  |  |
Nuclear | 2.71 |  |  | 2.73 |  |  | 2.72 |
Coal-fired(1) | 4.13 |  |  | 4.98 |  |  | 4.27 |
Hydroelectric | 1.83 |  |  | 1.82 |  |  | 1.85 |
Gas and oil-fired | 3.31 |  |  | 3.17 |  |  | 3.38 |
Transmission | 1.52 |  |  | 1.52 |  |  | 1.51 |
Other | 4.98 |  |  | 4.43 |  |  | 3.64 |
Schedule of Cash and Cash Equivalents | The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported on the Consolidated Balance Sheets and Consolidated Statements of Cash Flows:
Cash, Cash Equivalents, and Restricted Cash At September 30 (in millions)
| 2024 |  | 2023
Cash and cash equivalents | $ | 502 |  |  | $ | 501 |
Restricted cash and cash equivalents included in Other long-term assets | 21 |  |  | 20 |
Total cash, cash equivalents, and restricted cash | $ | 523 |  |  | $ | 521 |

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