INVESTMENTS IN UNCONSOLIDATED ENTITIES - SUMMARIZED FINANCIAL INFORMATION (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Schedule of Equity Method Investments [Line Items]
Net income (loss)	$ 659	$ 455	$ 1,316	$ 1,383
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Oncor Holdings
Schedule of Equity Method Investments [Line Items]
Operating revenues	1,293	1,147	2,542	2,286
Operating expenses	(908)	(836)	(1,805)	(1,665)
Operating income	385	311	737	621
Interest expense	(108)	(102)	(216)	(204)
Income tax expense	(52)	(34)	(94)	(70)
Net income (loss)	226	167	417	332
Noncontrolling interest held by Texas Transmission Investment LLC	(46)	(34)	(84)	(67)
Earnings attributable to Sempra Energy	$ 180	$ 133	$ 333	$ 265