v3.25.2
GENERAL INFORMATION AND OTHER FINANCIAL DATA - AFFILIATES REVENUE AND COST OF SALES (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Related Party Transaction [Line Items]        
Revenues $ 3,000 $ 3,011 $ 6,802 $ 6,651
Interest expense 359 311 792 616
Related Party        
Related Party Transaction [Line Items]        
Revenues 8 10 17 20
Interest expense 5 3 9 7
SDG&E        
Related Party Transaction [Line Items]        
Revenues 1,262 1,355 2,682 2,734
Interest expense 139 131 274 259
Operating revenues 1,262 1,355 2,682 2,734
SDG&E | Related Party        
Related Party Transaction [Line Items]        
Operating revenues 5 5 11 11
Cost of sales 30 35 68 75
SoCalGas        
Related Party Transaction [Line Items]        
Revenues 1,268 1,309 3,288 3,114
Interest expense 89 78 179 155
Operating revenues 1,268 1,309 3,288 3,114
SoCalGas | Related Party        
Related Party Transaction [Line Items]        
Operating revenues 40 37 81 81
Cost of sales $ 0 $ 0 $ (1) $ (3)