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Balance Sheet Components Electric Utility Plant, Net (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Property, Plant and Equipment [Line Items] |  |  |
Electric utility plant | $ 15,028 |  | $ 14,863
Construction work-in-progress | 693 |  | 567
Total cost | 15,721 |  | 15,430
Less: accumulated depreciation and amortization | (5,187) |  | (5,085)
Electric utility plant, net | 10,534 |  | $ 10,345
Amortization of Intangible Assets | $ 19 | $ 18 |

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