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Balance Sheet Components Balance Sheet Components Public Utility Property, Plant, and Equipment (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
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Property, Plant and Equipment [Line Items] |  |
Public Utilities, Property, Plant and Equipment, Generation or Processing | $ 4,749 | $ 4,600
Public Utilities, Property, Plant and Equipment, Transmission | 848 | 580
Public Utilities, Property, Plant and Equipment, Distribution | 3,917 | 3,838
Public Utilities, Property, Plant and Equipment, General | 656 | 611
Public Utilities, Property, Plant and Equipment, Intangible | 758 | 715
Public Utilities, Property, Plant and Equipment, Plant in Service | 10,928 | 10,344
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation | 4,095 | 3,803
Construction work-in-progress | 328 | 346
Public Utilities, Property, Plant and Equipment, Net | 6,833 | 6,541
Property, Plant and Equipment, Net | $ 7,161 | $ 6,887

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