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v3.22.4

Revenue Local Power Company Contracts (Details) $ in Millions | 3 Months Ended
--- | ---
Dec. 31, 2022 USD ($) Units | Dec. 31, 2021 USD ($)
Long-term Contract for Purchase of Electric Power [Line Items] |  |
Long-Duration Contracts Revenue Recognition, Policy [Policy Text Block] | $ 3,015 | $ 2,583
Total long-duration contracts revenue recognition | 2,706 |
Total percentage of operating revenues | 89.80% |
Number of LPCs signed LTA | Units | 147 |
Total Number of LPCs | Units | 153 |
5-year Termination Notice [Member] |  |
Long-term Contract for Purchase of Electric Power [Line Items] |  |
Long-Duration Contracts Revenue Recognition, Policy [Policy Text Block] | $ 361 |
Percentage of total operating revenues | 12.00% |
Number of LPCs signed LTA | Units | 6 |
20-year Termination Notice [Member] |  |
Long-term Contract for Purchase of Electric Power [Line Items] |  |
Long-Duration Contracts Revenue Recognition, Policy [Policy Text Block] | $ 2,345 |
Percentage of total operating revenues | 77.80% |

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. 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