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WILDFIRE-RELATED CONTINGENCIES (Wildfire-Related Claims Narrative) (Details) - Pacific Gas & Electric Co - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
2018 Camp fire |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Legal and other costs | $ 19 |  | $ 32 |
2017 Northern California wildfires |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Legal and other costs | $ 7 | $ 46 | $ 41 | $ 68

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