GENERAL INFORMATION AND OTHER FINANCIAL DATA - INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Tax Expense And Effective Income Tax Rates Disclosure [Line Items]
Income tax expense (benefit)	$ (105)	$ (52)	$ (63)	$ 499
Income before income taxes and equity earnings	200	323	1,213	2,175
Equity earnings, before income tax:	132	133	426	418
Pretax income	$ 332	$ 456	$ 1,639	$ 2,593
Effective income tax rate (as a percent)	(32.00%)	(11.00%)	(4.00%)	19.00%
SDG&E
Income Tax Expense And Effective Income Tax Rates Disclosure [Line Items]
Income tax expense (benefit)	$ 15	$ (15)	$ 89	$ (4)
Income before income taxes and equity earnings	$ 276	$ 259	$ 759	$ 712
Effective income tax rate (as a percent)	5.00%	(6.00%)	12.00%	(1.00%)
SoCalGas
Income Tax Expense And Effective Income Tax Rates Disclosure [Line Items]
Income tax expense (benefit)	$ (52)	$ (5)	$ 1	$ 68
Income before income taxes and equity earnings	$ (66)	$ 11	$ 477	$ 600
Effective income tax rate (as a percent)	79.00%	(45.00%)	0.00%	11.00%