SEMPRA - INVESTMENTS IN UNCONSOLIDATED ENTITIES - SUMMARIZED FINANCIAL INFORMATION (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Schedule of Equity Method Investments [Line Items]
Interest expense	$ (433)	$ (305)
Income tax (expense) benefit	(57)	(172)
Net income	919	881
NCI held by Texas Transmission Investment LLC	(2)	(69)
Earnings attributable to common shares	906	801
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Oncor Holdings
Schedule of Equity Method Investments [Line Items]
Operating revenues	1,548	1,458
Operating expenses	(1,157)	(1,051)
Income from operations	391	407
Interest expense	(185)	(150)
Income tax (expense) benefit	(40)	(49)
Net income	179	223
NCI held by Texas Transmission Investment LLC	(36)	(44)
Earnings attributable to common shares	$ 143	$ 179