GENERAL INFORMATION AND OTHER FINANCIAL DATA - INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Income Tax Expense And Effective Income Tax Rates Disclosure [Line Items]
Income tax expense (benefit)	$ 482	$ (105)	$ 711	$ (63)
(Loss) income before income taxes	160	200	1,109	1,213
Equity earnings, before income tax	133	132	443	426
Pretax income	$ 293	$ 332	$ 1,552	$ 1,639
Effective income tax rate (as a percent)	165.00%	(32.00%)	46.00%	(4.00%)
SDG&E
Income Tax Expense And Effective Income Tax Rates Disclosure [Line Items]
Income tax expense (benefit)	$ (33)	$ 15	$ (12)	$ 89
(Loss) income before income taxes	$ 291	$ 276	$ 768	$ 759
Effective income tax rate (as a percent)	(11.00%)	5.00%	(2.00%)	12.00%
SoCalGas
Income Tax Expense And Effective Income Tax Rates Disclosure [Line Items]
Income tax expense (benefit)	$ (95)	$ (52)	$ (51)	$ 1
(Loss) income before income taxes	$ (49)	$ (66)	$ 523	$ 477
Effective income tax rate (as a percent)	194.00%	79.00%	(10.00%)	0.00%