Selected Balance Sheet Data, Property, Plant and Equipment, Net (Details) - USD ($) $ in Millions |
Sep. 30, 2024 |
Dec. 31, 2023 |
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|---|---|---|---|---|
| Public Utility, Property, Plant and Equipment [Line Items] | ||||
| Common and other property | $ 3,370 | $ 3,190 | ||
| Plant to be retired | [1] | 1,846 | 2,055 | |
| Construction work in progress | 4,851 | 2,873 | ||
| Total property, plant and equipment | 74,574 | 69,692 | ||
| Less accumulated depreciation | (19,632) | (18,399) | ||
| Nuclear fuel | 3,452 | 3,337 | ||
| Less accumulated amortization | (3,073) | (2,988) | ||
| Property, plant and equipment, net | 55,321 | 51,642 | ||
| Electric plant | ||||
| Public Utility, Property, Plant and Equipment [Line Items] | ||||
| Plant | 54,908 | 52,494 | ||
| Natural gas plant | ||||
| Public Utility, Property, Plant and Equipment [Line Items] | ||||
| Plant | $ 9,599 | $ 9,080 | ||
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