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Commitments and Contingencies - Recoveries (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended 13 Months Ended
Feb. 28, 2025
Jul. 31, 2024
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Jun. 30, 2023
Dec. 31, 2022
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Commitments and Contingencies                    
Insurance recoveries       $ 3,335.0            
SCE                    
Commitments and Contingencies                    
Expected revenue through electric rates       36.0 $ 39.0   $ 238.0      
Insurance recoveries       96.0 149.0   399.0      
Wildfire insurance expense           $ 450.0        
SCE | Wildfire liability insurance | Subsidiary of Common Parent                    
Commitments and Contingencies                    
Wildfire insurance expense       132.0 213.0          
Proceeds from self-insurance program       300.0 150.0          
SCE | Commercial insurance carriers                    
Commitments and Contingencies                    
Wildfire insurance expense           357.0        
Other Wildfire Events | SCE                    
Commitments and Contingencies                    
Expected revenue through electric rates       9.0 2.0   162.0      
Insurance recoveries       96.0 149.0   399.0      
2017/2018 Wildfire/Mudslide Events                    
Commitments and Contingencies                    
Insurance recoveries       2,440.0            
2017/2018 Wildfire/Mudslide Events | SCE                    
Commitments and Contingencies                    
Expected revenue through electric rates       27.0 37.0   76.0      
Wildfire insurance coverage       1,000.0            
Self insurance       10.0            
Insurance recoveries       0.0 $ 0.0   $ 0.0      
November 2018 Wildfires | SCE                    
Commitments and Contingencies                    
Wildfire insurance coverage       1,000.0            
Self insurance       10.0            
EIS Wildfire Liability Insurance Policy | SCE | Subsequent Event                    
Commitments and Contingencies                    
Self insurance $ 50.0                  
Aggregate | Wildfire Post2018 Events | CPUC | SCE                    
Commitments and Contingencies                    
Expected revenue through electric rates       2,700.0            
Aggregate | Other Wildfire Events | CPUC | SCE                    
Commitments and Contingencies                    
Expected revenue through electric rates       152.0            
Aggregate | Other Wildfire Events | FERC | SCE                    
Commitments and Contingencies                    
Expected revenue through electric rates       465.0            
Aggregate | 2017/2018 Wildfire/Mudslide Events | SCE                    
Commitments and Contingencies                    
Insurance recoveries       2,000.0            
Aggregate | 2017 Creek Fire | SCE                    
Commitments and Contingencies                    
Insurance recoveries       $ 18.0            
Insurance coverage through June 2022 | SCE                    
Commitments and Contingencies                    
Wildfire insurance coverage           1,000.0   $ 1,000.0 $ 1,000.0 $ 1,200.0
Self insurance           63.0   163.0 130.0 165.0
Insurance coverage through June 2023 | SCE                    
Commitments and Contingencies                    
Coverage net           $ 937.0   $ 837.0 $ 870.0 $ 1,000.0
Customer-funded self-insurance | SCE                    
Commitments and Contingencies                    
Wildfire insurance coverage   $ 1,000.0                
Rate funded wildfire self-insurance program future proceeds, assuming no claims   $ 300.0                
Shareholder contribution on self insurance (as a percent)   2.50%                
Threshold for insurance costs before shareholder contributions   $ 500.0                
Maximum annual shareholder contribution   $ 12.5                
Forecast | SCE                    
Commitments and Contingencies                    
Wildfire insurance expense     $ 50.0