INVESTMENTS IN UNCONSOLIDATED ENTITIES - SUMMARIZED FINANCIAL INFORMATION (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Schedule of Equity Method Investments [Line Items]
Net income	$ 1,172	$ 657
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Oncor Holdings
Schedule of Equity Method Investments [Line Items]
Operating revenues	1,292	1,249
Operating expenses	(1,024)	(897)
Operating income	268	352
Interest expense	(123)	(108)
Income tax expense	(24)	(42)
Net income	99	191
Noncontrolling interest held by Texas Transmission Investment LLC	(20)	(38)
Earnings attributable to Sempra Energy	$ 79	$ 153