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GENERAL INFORMATION AND OTHER FINANCIAL DATA - INCOME TAXES (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Income Tax Expense And Effective Income Tax Rates Disclosure [Line Items]        
Income tax expense (benefit) $ 172 $ (130) $ 229 $ 42
Income before income taxes and equity earnings 298 308 949 1,013
Equity earnings, before income tax 169 160 310 294
Pretax income $ 467 $ 468 $ 1,259 $ 1,307
Effective income tax rate (as a percent) 37.00% (28.00%) 18.00% 3.00%
SDG&E        
Income Tax Expense And Effective Income Tax Rates Disclosure [Line Items]        
Income tax expense (benefit) $ 7 $ 34 $ 21 $ 74
Income before income taxes and equity earnings $ 182 $ 220 $ 477 $ 483
Effective income tax rate (as a percent) 4.00% 15.00% 4.00% 15.00%
SoCalGas        
Income Tax Expense And Effective Income Tax Rates Disclosure [Line Items]        
Income tax expense (benefit) $ 6 $ 10 $ 44 $ 53
Income before income taxes and equity earnings $ 91 $ 141 $ 572 $ 543
Effective income tax rate (as a percent) 7.00% 7.00% 8.00% 10.00%