INVESTMENTS IN UNCONSOLIDATED ENTITIES - SUMMARIZED FINANCIAL INFORMATION (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Schedule of Equity Method Investments [Line Items]
Net income	$ 854	$ 561	$ 2,762	$ 1,877
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Oncor Holdings
Schedule of Equity Method Investments [Line Items]
Operating revenues	1,592	1,438	4,227	3,980
Operating expenses	(1,007)	(929)	(3,007)	(2,734)
Operating income (loss)	585	509	1,220	1,246
Interest expense	(140)	(115)	(396)	(331)
Income tax expense	(81)	(70)	(148)	(164)
Net income	376	315	672	732
Noncontrolling interest held by Texas Transmission Investment LLC	(75)	(62)	(135)	(146)
Earnings attributable to Sempra Energy	$ 301	$ 253	$ 537	$ 586