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WILDFIRE-RELATED CONTINGENCIES (2019 Kincade Fire, 2021 Dixie Fire and 2022 Mosquito Fire) (Details) numberOfPeople in Millions, $ in Millions |  |  | 3 Months Ended | 6 Months Ended |  |  |  |
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Jul. 13, 2021 USD ($) a injury structure | Nov. 04, 2019 numberOfPeople | Jun. 30, 2025 USD ($) | Mar. 31, 2025 USD ($) | Jun. 30, 2025 USD ($) | Jul. 23, 2025 complaint numberOfClaimHolder company plaintiff notice | Dec. 31, 2024 USD ($) | Sep. 06, 2022 a structure numberOfFatality injury | Oct. 23, 2019 a structure numberOfFatality injury
2019 Kincade Fire |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Number of acres burned (acre) | a |  |  |  |  |  |  |  |  | 77,758
Number of fatalities (fatality) | numberOfFatality |  |  |  |  |  |  |  |  | 0
Number of injuries | injury |  |  |  |  |  |  |  |  | 4
Number of structures destroyed (structure) | structure |  |  |  |  |  |  |  |  | 374
Number of structures damaged (structure) | structure |  |  |  |  |  |  |  |  | 60
Number of people part of mandatory evacuation order | numberOfPeople |  | 0.2 |  |  |  |  |  |  |
Loss contingency liability |  |  | $ 1,325 |  | $ 1,325 |  | $ 1,225 |  |
Potential loss contingency |  |  | 50 | $ 50 |  |  |  |  |
Insurance receivable fully collected |  |  | 430 |  | 430 |  |  |  |
2019 Kincade Fire | Subsequent Event |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Number of complaints (complaint) | complaint |  |  |  |  |  | 135 |  |  |
Number of plaintiffs represented by complaints | plaintiff |  |  |  |  |  | 2,989 |  |  |
2021 Dixie fire |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Number of acres burned (acre) | a | 963,309 |  |  |  |  |  |  |  |
Number of structures destroyed (structure) | structure | 1,311 |  |  |  |  |  |  |  |
Number of structures damaged (structure) | structure | 94 |  |  |  |  |  |  |  |
Loss contingency accrual, period increase (decrease) |  |  | 150 |  |  |  |  |  |
Number of residential structures destroyed (structure) | structure | 763 |  |  |  |  |  |  |  |
Number of multi-family residential structures destroyed (structure) | structure | 12 |  |  |  |  |  |  |  |
Number of commercial residential structures destroyed (structure) | structure | 8 |  |  |  |  |  |  |  |
Number of commercial non-residential structures destroyed (structure) | structure | 148 |  |  |  |  |  |  |  |
Number of detached structures destroyed (structure) | structure | 466 |  |  |  |  |  |  |  |
Number of first responder injuries (injury) | injury | 4 |  |  |  |  |  |  |  |
Estimated losses |  |  | 2,075 |  | 2,075 |  | 1,925 |  |
Loss contingency, costs incurred | $ 650 |  |  |  |  |  |  |  |
Insurance receivable |  |  | 523 |  | 523 |  |  |  |
Probable of recovery |  |  |  |  | 2,219 |  |  |  |
2021 Dixie fire | Subsequent Event |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Number of complaints (complaint) | numberOfClaimHolder |  |  |  |  |  | 184 |  |  |
Number of plaintiffs represented by complaints | numberOfClaimHolder |  |  |  |  |  | 8,894 |  |  |
2021 Dixie fire | Wildfire Fund |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Probable of recovery |  |  |  |  | 1,075 |  |  |  |
Probable of recovery received |  |  |  |  | 445 |  |  |  |
2021 Dixie fire | FERC TO rates |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Probable of recovery |  |  |  |  | 95 |  |  |  |
2021 Dixie fire | WEMA |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Probable of recovery |  |  |  |  | 526 |  |  |  |
2021 Dixie fire | National Park |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Number of acres burned (acre) | a | 70,000 |  |  |  |  |  |  |  |
2021 Dixie fire | National Forrest |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Number of acres burned (acre) | a | 685,000 |  |  |  |  |  |  |  |
2022 Mosquito fire |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Number of acres burned (acre) | a |  |  |  |  |  |  |  | 76,788 |
Number of fatalities (fatality) | numberOfFatality |  |  |  |  |  |  |  | 0 |
Number of injuries | injury |  |  |  |  |  |  |  | 0 |
Number of structures destroyed (structure) | structure |  |  |  |  |  |  |  | 78 |
Number of structures damaged (structure) | structure |  |  |  |  |  |  |  | 13 |
Loss contingency liability |  |  | 250 |  | 250 |  | $ 100 |  |
Loss contingency accrual, period increase (decrease) |  |  | 150 |  |  |  |  |  |
Number of residential structures destroyed (structure) | structure |  |  |  |  |  |  |  | 44 |
Number of detached structures destroyed (structure) | structure |  |  |  |  |  |  |  | 40 |
Insurance receivable |  |  | $ 251 |  | 251 |  |  |  |
Probable of recovery |  |  |  |  | 311 |  |  |  |
Percentage of fire contained |  |  |  |  |  |  |  | 100.00% |
2022 Mosquito fire | Subsequent Event |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Number of complaints (complaint) | complaint |  |  |  |  |  | 26 |  |  |
Number of plaintiffs represented by complaints | notice |  |  |  |  |  | 2,716 |  |  |
Number of public entities who files complaints | company |  |  |  |  |  | 6 |  |  |
2022 Mosquito fire | Wildfire Fund |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Probable of recovery |  |  |  |  | 0 |  |  |  |
2022 Mosquito fire | FERC TO rates |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Probable of recovery |  |  |  |  | 6 |  |  |  |
2022 Mosquito fire | WEMA |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Probable of recovery |  |  |  |  | $ 54 |  |  |  |

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