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WILDFIRE-RELATED CONTINGENCIES (Clean-up and Repair Costs) (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018
Loss Contingencies [Line Items] |  |  |
Capital expenditures | $ 836 | $ 317 |
Total long-term regulatory assets | 5,349 |  | $ 4,964
Catastrophic event memorandum account |  |  |
Loss Contingencies [Line Items] |  |  |
Total long-term regulatory assets | 918 |  | 790
Pacific Gas & Electric Co |  |  |
Loss Contingencies [Line Items] |  |  |
Capital expenditures | 836 | $ 317 |
Total long-term regulatory assets | 5,349 |  | $ 4,964
Pacific Gas & Electric Co | 2018 Camp fire |  |  |
Loss Contingencies [Line Items] |  |  |
Service restoration and repair costs | 655 |  |
Capital expenditures | 236 |  |
Pacific Gas & Electric Co | 2017 Northern California wildfires |  |  |
Loss Contingencies [Line Items] |  |  |
Service restoration and repair costs | 334 |  |
Capital expenditures | 161 |  |
Pacific Gas & Electric Co | Catastrophic event memorandum account | 2018 Camp fire |  |  |
Loss Contingencies [Line Items] |  |  |
Total long-term regulatory assets | 0 |  |
Pacific Gas & Electric Co | Catastrophic event memorandum account | 2017 Northern California wildfires |  |  |
Loss Contingencies [Line Items] |  |  |
Total long-term regulatory assets | $ 88 |  |

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