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WILDFIRE-RELATED CONTINGENCIES (2019 Kincade Fire, 2020 Zogg Fire, 2021 Dixie Fire and 2022 Mosquito Fire) (Details)
numberOfPeople in Millions, $ in Millions
 3 Months Ended 12 Months Ended
Jul. 13, 2021
USD ($)
a
structure
injury
Nov. 04, 2019
numberOfPeople
Dec. 31, 2024
USD ($)
Sep. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Feb. 05, 2025
numberOfClaimHolder
notice
plaintiff
company
complaint
Dec. 31, 2023
USD ($)
Sep. 06, 2022
a
structure
numberOfFatality
injury
Oct. 23, 2019
a
injury
structure
numberOfFatality
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     $ 1,225   $ 1,225   $ 1,125    
Potential loss contingency     25 $ 75 100        
Insurance receivable fully collected             430    
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 liability             1,600    
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     1,925   1,925        
Loss contingency, costs incurred $ 650                
Insurance receivable     527   527        
Probable of recovery         2,054        
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             $ 100    
Number of residential structures destroyed (structure) | structure               44  
Number of detached structures destroyed (structure) | structure               40  
Insurance receivable     90   90        
Probable of recovery         150        
Percentage of fire contained               100.00%  
Subsequent Event | 2019 Kincade Fire                  
Loss Contingencies [Line Items]                  
Number of complaints (complaint) | complaint           133      
Number of plaintiffs represented by complaints | plaintiff           2,960      
Subsequent Event | 2021 Dixie fire                  
Loss Contingencies [Line Items]                  
Number of complaints (complaint) | numberOfClaimHolder           182      
Number of plaintiffs represented by complaints | numberOfClaimHolder           8,681      
Subsequent Event | 2022 Mosquito fire                  
Loss Contingencies [Line Items]                  
Number of complaints (complaint) | complaint           25      
Number of plaintiffs represented by complaints | notice           2,738      
Number of public entities who files complaints | company           6      
Wildfire Fund | 2021 Dixie fire                  
Loss Contingencies [Line Items]                  
Probable of recovery         925        
Probable of recovery received         169        
Wildfire Fund | 2022 Mosquito fire                  
Loss Contingencies [Line Items]                  
Probable of recovery         0        
FERC TO rates | 2021 Dixie fire                  
Loss Contingencies [Line Items]                  
Probable of recovery         94        
FERC TO rates | 2022 Mosquito fire                  
Loss Contingencies [Line Items]                  
Probable of recovery         7        
WEMA | 2021 Dixie fire                  
Loss Contingencies [Line Items]                  
Probable of recovery         508        
WEMA | 2022 Mosquito fire                  
Loss Contingencies [Line Items]                  
Probable of recovery         53        
National Park | 2021 Dixie fire                  
Loss Contingencies [Line Items]                  
Number of acres burned (acre) | a 70,000                
National Forrest | 2021 Dixie fire                  
Loss Contingencies [Line Items]                  
Number of acres burned (acre) | a 685,000                
Pacific Gas & Electric Co (Utility) | 2021 Dixie fire                  
Loss Contingencies [Line Items]                  
Potential loss contingency     $ 50 $ 275 $ 325