GENERAL INFORMATION AND OTHER FINANCIAL DATA - INCOME TAXES NARRATIVE (Details) $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2025 USD ($)
Schedule Of Income Tax Expense And Effective Income Tax Rates [Line Items]
Additional income tax benefit from legislative impacts		$ 73	$ 73
Possible decrease in unrecognized income tax benefits	$ 150	150	150
SDG&E
Schedule Of Income Tax Expense And Effective Income Tax Rates [Line Items]
Additional income tax benefit from legislative impacts		26	26
SoCalGas
Schedule Of Income Tax Expense And Effective Income Tax Rates [Line Items]
Additional income tax benefit from legislative impacts		47	47
SI Partners | Disposal Group Held-for-sale
Schedule Of Income Tax Expense And Effective Income Tax Rates [Line Items]
Income tax expense from divestiture	$ 514	$ 514	$ 552