INVESTMENTS IN UNCONSOLIDATED ENTITIES - SUMMARIZED FINANCIAL INFORMATION (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Net income	$ 2,285	$ 1,463	$ 4,105
Current assets	5,912	4,375
Current liabilities	9,899	10,035
Other Equity Method Investments
Schedule of Equity Method Investments [Line Items]
Operating revenue	2,959	2,721	2,341
Operating expense	(772)	(719)	(706)
Operating Income	2,187	2,002	1,635
Interest expense	(505)	(548)	(514)
Other Equity Method Investments
Schedule of Equity Method Investments [Line Items]
Net income	1,537	1,388	1,132
Current assets	1,008	788
Noncurrent assets	14,786	14,686
Current liabilities	1,147	1,230
Noncurrent liabilities	11,130	11,807
Oncor Holdings | Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule of Equity Method Investments [Line Items]
Operating revenue	5,243	4,764	4,511
Operating expense	(3,682)	(3,397)	(3,224)
Operating Income	1,561	1,367	1,287
Interest expense	(445)	(413)	(405)
Income tax expense	(203)	(163)	(146)
Net income	893	760	703
Noncontrolling interest held by TTI	(179)	(152)	(141)
Earnings attributable to Sempra	714	608	$ 562
Current assets	1,223	1,039
Noncurrent assets	31,703	29,481
Current liabilities	1,579	2,220
Noncurrent liabilities	17,405	15,281
Noncontrolling interest held by TTI	$ 3,141	$ 2,916