SEGMENT INFORMATION - Schedule of Segment Information Income Statement and Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Revenues from External Customers and Long-Lived Assets [Line Items]
Equity earnings, before income tax	$ 133	$ 132	$ 443	$ 426
Equity earnings	472	454	1,190	1,235
CAPITAL EXPENDITURES FOR PROPERTY, PLANT AND EQUIPMENT			7,201	5,765
Interest income	17	17	65	47
Interest expense	(403)	(328)	(1,195)	(944)
Net income, income tax (expense) benefit	(482)	105	(711)	63
Earnings attributable to noncontrolling interests	(55)	(110)	(103)	(325)
Earnings attributable to common shares	77	638	1,444	2,152
Operating Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Equity earnings, before income tax	133	132	443	426
Equity earnings, net of tax	339	322	747	809
CAPITAL EXPENDITURES FOR PROPERTY, PLANT AND EQUIPMENT			7,197	5,762
Earnings attributable to common shares	96	738	1,651	2,443
Operating Segments | Sempra California
Revenues from External Customers and Long-Lived Assets [Line Items]
CAPITAL EXPENDITURES FOR PROPERTY, PLANT AND EQUIPMENT			3,334	3,329
Revenues	2,613	2,256	8,504	8,022
Depreciation and amortization	(591)	(536)	(1,727)	(1,585)
Interest income	2	4	7	12
Interest expense	(234)	(213)	(687)	(627)
Net income, income tax (expense) benefit	128	37	63	(90)
Other segment items	(1,548)	(1,301)	(4,807)	(4,587)
Earnings attributable to common shares	370	247	1,353	1,145
Operating Segments | Sempra Texas Utilities
Revenues from External Customers and Long-Lived Assets [Line Items]
Equity earnings, before income tax	1	2	4	6
Equity earnings, net of tax	306	261	661	646
Equity earnings	307	263	665	652
Other segment items	(1)	(2)	(5)	(6)
Earnings attributable to common shares	306	261	660	646
Operating Segments | Sempra Infrastructure
Revenues from External Customers and Long-Lived Assets [Line Items]
Equity earnings, before income tax	132	130	439	420
Equity earnings, net of tax	33	61	86	163
Equity earnings	165	191	525	583
CAPITAL EXPENDITURES FOR PROPERTY, PLANT AND EQUIPMENT			3,863	2,433
Revenues	555	538	1,511	1,466
Depreciation and amortization	(69)	(76)	(223)	(221)
Interest income	10	7	34	19
Interest expense	(16)	0	(87)	0
Net income, income tax (expense) benefit	(792)	43	(1,045)	67
Earnings attributable to noncontrolling interests	(55)	(110)	(103)	(325)
Other segment items	(378)	(363)	(974)	(937)
Earnings attributable to common shares	(580)	230	(362)	652
Earnings attributable to common shares
Revenues from External Customers and Long-Lived Assets [Line Items]
CAPITAL EXPENDITURES FOR PROPERTY, PLANT AND EQUIPMENT			4	3
Earnings attributable to common shares	$ (19)	$ (100)	$ (207)	$ (291)