v3.26.1
DEBT AND CREDIT FACILITIES - LONG-TERM DEBT (Details) - USD ($)
$ in Millions
1 Months Ended 6 Months Ended
May 31, 2026
Mar. 31, 2026
Jun. 30, 2026
Jun. 30, 2025
Debt Instrument [Line Items]        
Issuances of debt (maturities greater than 90 days)     $ 8,092 $ 5,458
SDG&E        
Debt Instrument [Line Items]        
Issuances of debt (maturities greater than 90 days)     1,096 848
SoCalGas        
Debt Instrument [Line Items]        
Issuances of debt (maturities greater than 90 days)     $ 647 $ 1,090
Mortgages | First Mortgage Bonds Due March 2036 | SDG&E        
Debt Instrument [Line Items]        
Debt amount   $ 625    
Debt instrument, interest rate   5.20%    
Issuances of debt (maturities greater than 90 days)   $ 618    
Unamortized debt issuance costs   7    
Mortgages | First Mortgage Bonds Due March 2056 | SDG&E        
Debt Instrument [Line Items]        
Debt amount   $ 475    
Debt instrument, interest rate   5.95%    
Issuances of debt (maturities greater than 90 days)   $ 467    
Unamortized debt issuance costs   $ 8    
Mortgages | First Mortgage Bonds Due June 2056 | SoCalGas        
Debt Instrument [Line Items]        
Debt amount $ 650      
Debt instrument, interest rate 5.90%      
Issuances of debt (maturities greater than 90 days) $ 640      
Unamortized debt issuance costs $ 10