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Contingencies (Details) item in Millions | 1 Months Ended | 30 Months Ended |  |
--- | --- | --- | --- | ---
Feb. 28, 2021 USD ($) item | Mar. 31, 2024 USD ($) | Dec. 31, 2021 USD ($) | Mar. 31, 2021 USD ($)
Commitments And Contingencies [Line Items] |  |  |  |
Contingent liability |  |  | $ 20,000,000 | $ 20,000,000
Deferred Tax Liabilities, Deferred Expense |  |  | 300,000 |
SDG&E [Member] |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Number of people | item | 3.6 |  |  |
Asset Acquisition, Consideration Transferred | $ 50,000,000.0 |  |  |
Payments to Acquire Productive Assets | $ 20,000,000.0 |  |  |
Asset Acquisition, Contingent Consideration, Liability |  |  | $ 0 |
Forecast [Member] |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Payments to Acquire Productive Assets |  | $ 30,000,000.0 |  |

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