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REGULATORY MATTERS - CPUC GRC Narrative (Details) - USD ($)
$ in Millions
 1 Months Ended 9 Months Ended 12 Months Ended
Oct. 18, 2024
Oct. 31, 2024
May 31, 2024
Oct. 31, 2023
Sep. 30, 2024
Dec. 31, 2025
Dec. 31, 2024
SDG&E | Subsequent Event | Forecast | California Public Utilities Commission              
General Rate Case [Line Items]              
Approved return on equity (as a percent)           10.23%  
SoCalGas | Subsequent Event | Forecast | California Public Utilities Commission              
General Rate Case [Line Items]              
Approved return on equity (as a percent)           10.08%  
2024 General Rate Case | Cost of Capital Proceeding              
General Rate Case [Line Items]              
Approved return on equity (as a percent)         50.00%    
2024 General Rate Case | Cost of Capital Proceeding | Subsequent Event              
General Rate Case [Line Items]              
Change in benchmark rate during period percentage   20.00%          
2024 General Rate Case | SDG&E | General Rate Case | California Public Utilities Commission              
General Rate Case [Line Items]              
Requested revenue requirements         $ 3,007    
2024 General Rate Case | SDG&E | General Rate Case | Subsequent Event | California Public Utilities Commission              
General Rate Case [Line Items]              
Proposed revenue requirement $ 2,800            
Decrease in requested revenue requirement from prior years request 207            
Revenue increase $ 267            
Requested percent increase 10.50%            
Requested revenue requirement, annual increase, percentage 3.90%            
2024 General Rate Case | SDG&E | General Rate Case | Subsequent Event | California Public Utilities Commission | Electrical Operations              
General Rate Case [Line Items]              
Proposed revenue requirement $ 2,198            
2024 General Rate Case | SDG&E | General Rate Case | Subsequent Event | California Public Utilities Commission | Natural Gas Operations              
General Rate Case [Line Items]              
Proposed revenue requirement 602            
2024 General Rate Case | SDG&E | Cost of Capital Proceeding | Subsequent Event | California Public Utilities Commission              
General Rate Case [Line Items]              
Effect of approved decrease adjustment on ROE, percentage   0.42%          
2024 General Rate Case | SoCalGas | General Rate Case | California Public Utilities Commission              
General Rate Case [Line Items]              
Requested revenue requirements     $ 4,434        
2024 General Rate Case | SoCalGas | General Rate Case | Subsequent Event | California Public Utilities Commission              
General Rate Case [Line Items]              
Proposed revenue requirement 4,062            
Decrease in requested revenue requirement from prior years request 372            
Revenue increase $ 523            
Requested percent increase 14.80%            
Requested revenue requirement, annual increase, percentage 3.90%            
2024 General Rate Case | SoCalGas | Cost of Capital Proceeding | Subsequent Event | California Public Utilities Commission              
General Rate Case [Line Items]              
Effect of approved decrease adjustment on ROE, percentage   (0.42%)          
2024 GRC - 2024 Requirement | SDG&E | General Rate Case              
General Rate Case [Line Items]              
Requested review and recovery of wildfire mitigation plan       $ 1,500      
2024 GRC - 2024 Requirement | SDG&E | General Rate Case | Forecast              
General Rate Case [Line Items]              
General rate case, expected recovery of wildlife mitigation plan costs           $ 96  
2024 GRC - 2024 Requirement | SDG&E | General Rate Case | Subsequent Event | Forecast              
General Rate Case [Line Items]              
General rate case, expected recovery of wildlife mitigation plan costs             $ 194