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Balance Sheet Components Electric Utility Plant, Net (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Property, Plant and Equipment [Line Items] |  |
Electric utility plant | $ 13,881 | $ 13,329
Construction work-in-progress | 628 | 974
Total cost | 14,509 | 14,303
Less: accumulated depreciation and amortization | (4,846) | (4,757)
Electric utility plant, net | $ 9,663 | $ 9,546

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