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GENERAL INFORMATION AND OTHER FINANCIAL DATA - WILDFIRE FUND AND CONTINUATION ACCOUNT (Details) - USD ($)
$ in Millions
 1 Months Ended 3 Months Ended 9 Months Ended
Oct. 31, 2025
Sep. 30, 2025
Sep. 30, 2025
Sep. 30, 2025
Loss Contingencies [Line Items]        
Wildfire fund continuation account, additional liquidity   $ 18,000.0    
Wildfire fund, threshold amount to seek payment   1,000.0    
Wildfire fund, ratepayer contributions financed through new bonds   9,000.0    
Wildfire fund, electric IOU shareholder contributions   5,100.0    
Wildfire fund, electric IOU annual contributions   300.0    
Wildfire fund, additional shareholder contributions   3,900.0    
Wildfire fund, annual shareholder contributions payable   $ 780.0    
Wildfire fund, potential ratepayer credit   50.00%    
Wildfire fund, threshold percentage of equity portion of electric transmission   20.00%    
Wildfire fund, maximum claim reimbursement, prior reimbursements, term       3 years
Wildfire fund, maximum capital investments authorized   $ 6,000.0    
Subsequent Event        
Loss Contingencies [Line Items]        
IOU expected aggregate reimbursements $ 1,200.0      
SDG&E        
Loss Contingencies [Line Items]        
Wildfire fund asset   264.0 $ 264.0 $ 264.0
Accelerated Amortization Of Wildfire Fund Asset     2.0 2.0
Loss contingency, wildfire fund expected contribution   387.0 387.0 387.0
Loss contingency, wildfire fund, expected fixed contributions   219.3 219.3 219.3
Loss contingency, wildfire fund, expected annual fixed contributions   $ 12.9 12.9 12.9
Wildfire fund loss contingency, term, expected fixed contributions   17 years    
Loss contingency, wildfire fund, expected contingent contributions   $ 167.7 167.7 167.7
Loss contingency, wildfire fund, expected annual contingent contributions   $ 33.5 $ 33.5 33.5
Wildfire fund loss contingency, term, expected contingent contribution   5 years    
Initial liability cap       $ 1,400.0
Wildfire fund, maximum capital investments authorized   $ 258.0