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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Estimated Useful Lives and Balances of Utilities Property, Plant and Equipment) (Details) - Pacific Gas & Electric Co (Utility) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total property, plant, and equipment | $ 107,153 | $ 98,959
Accumulated depreciation | (30,946) | (29,131)
Net property, plant, and equipment | 76,207 | 69,828
Electricity generating facilities |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total property, plant, and equipment | 11,781 | 11,217
Electricity generating facilities | Northern California Wildfire |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total property, plant, and equipment | $ 1,800 |
Electricity generating facilities | Minimum |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Estimated Useful Lives (years) | 5 years |
Electricity generating facilities | Maximum |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Estimated Useful Lives (years) | 75 years |
Electricity distribution facilities |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total property, plant, and equipment | $ 41,061 | 37,723
Electricity distribution facilities | Minimum |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Estimated Useful Lives (years) | 10 years |
Electricity distribution facilities | Maximum |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Estimated Useful Lives (years) | 70 years |
Electricity transmission facilities |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total property, plant, and equipment | $ 16,413 | 15,516
Electricity transmission facilities | Minimum |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Estimated Useful Lives (years) | 15 years |
Electricity transmission facilities | Maximum |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Estimated Useful Lives (years) | 75 years |
Natural gas distribution facilities |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total property, plant, and equipment | $ 15,366 | 14,100
Natural gas distribution facilities | Minimum |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Estimated Useful Lives (years) | 20 years |
Natural gas distribution facilities | Maximum |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Estimated Useful Lives (years) | 60 years |
Natural gas transmission and storage facilities |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total property, plant, and equipment | $ 9,859 | 9,067
Natural gas transmission and storage facilities | Minimum |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Estimated Useful Lives (years) | 5 years |
Natural gas transmission and storage facilities | Maximum |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Estimated Useful Lives (years) | 66 years |
Financing lease |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total property, plant, and equipment | $ 18 | 18
Construction work in progress |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total property, plant, and equipment | 4,137 | 3,480
General plant and other |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total property, plant, and equipment | $ 8,518 | $ 7,838
General plant and other | Minimum |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Estimated Useful Lives (years) | 5 years |
General plant and other | Maximum |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Estimated Useful Lives (years) | 50 years |

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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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