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Commitments and Contingencies (Wildfires and Mudslides) (Details) - SCE $ in Millions | 1 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 30, 2020 USD ($) a item individual | Oct. 31, 2019 a item individual | Nov. 30, 2018 a item individual | Jan. 31, 2018 individual item | Dec. 04, 2017 a individual item
Saddle Ridge Fire |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Acres burned | a |  | 9,000 |  |  |
Structures destroyed |  | 19 |  |  |
Structures damaged |  | 88 |  |  |
Fatalities | individual |  | 1 |  |  |
Number of injured firefighters | individual |  | 8 |  |  |
Bobcat fire |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Acres burned | a | 116,000 |  |  |  |
Number of injured firefighters | individual | 6 |  |  |  |
Estimated fire suppression costs | $ | $ 80 |  |  |  |
Bobcat fire | Homes |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Structures destroyed | 87 |  |  |  |
Structures damaged | 28 |  |  |  |
Bobcat fire | Commercial property |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Structures destroyed | 1 |  |  |  |
Bobcat fire | Minor structures |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Structures destroyed | 83 |  |  |  |
Structures damaged | 19 |  |  |  |
December 2017 Wildfires |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Acres burned | a |  |  |  |  | 280,000
Structures destroyed |  |  |  |  | 1,343
Fatalities | individual |  |  |  |  | 2
November 2018 Wildfires |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Acres burned | a |  |  | 100,000 |  |
Structures destroyed |  |  | 1,643 |  |
Structures damaged |  |  | 364 |  |
Fatalities | individual |  |  | 3 |  |
Additional fatalities | individual |  |  | 4 |  |
Montecito Mudslides |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Structures destroyed |  |  |  | 135 |
Structures damaged |  |  |  | 324 |
Fatalities | individual |  |  |  | 21 |
Additional fatalities presumed | individual |  |  |  | 2 |

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