SEMPRA - INVESTMENTS IN UNCONSOLIDATED ENTITIES - SUMMARIZED FINANCIAL INFORMATION (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Schedule of Equity Method Investments [Line Items]
Interest expense	$ (403)	$ (328)	$ (1,195)	$ (944)
Income tax (expense) benefit	(482)	105	(711)	63
Net income	150	759	1,588	2,511
NCI held by Texas Transmission Investment LLC	(55)	(110)	(103)	(325)
Earnings attributable to Sempra	77	638	1,444	2,152
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Oncor Holdings
Schedule of Equity Method Investments [Line Items]
Operating revenues	1,845	1,660	5,047	4,610
Operating expenses	(1,213)	(1,109)	(3,537)	(3,203)
Income from operations	632	551	1,510	1,407
Interest expense	(201)	(170)	(578)	(481)
Income tax (expense) benefit	(82)	(75)	(179)	(179)
Net income	378	320	814	791
NCI held by Texas Transmission Investment LLC	(75)	(63)	(162)	(157)
Earnings attributable to Sempra	$ 303	$ 257	$ 652	$ 634