SEMPRA - INVESTMENTS IN UNCONSOLIDATED ENTITIES - SUMMARIZED FINANCIAL INFORMATION (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Schedule of Equity Method Investments [Line Items]
Interest expense	$ (328)	$ (312)	$ (944)	$ (995)
Income tax benefit (expense)	105	52	63	(499)
Net income	759	854	2,511	2,762
NCI held by Texas Transmission Investment LLC	(110)	(122)	(325)	(435)
Earnings attributable to common shares	638	721	2,152	2,293
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Oncor Holdings
Schedule of Equity Method Investments [Line Items]
Operating revenues	1,660	1,592	4,610	4,227
Operating expenses	(1,109)	(1,007)	(3,203)	(3,007)
Income from operations	551	585	1,407	1,220
Interest expense	(170)	(140)	(481)	(396)
Income tax benefit (expense)	(75)	(81)	(179)	(148)
Net income	320	376	791	672
NCI held by Texas Transmission Investment LLC	(63)	(75)	(157)	(135)
Earnings attributable to common shares	$ 257	$ 301	$ 634	$ 537