SEGMENT INFORMATION - Schedule of Segment Information Income Statement and Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Revenues from External Customers and Long-Lived Assets [Line Items]
CAPITAL EXPENDITURES FOR PROPERTY, PLANT AND EQUIPMENT	$ 2,336	$ 1,933
Equity earnings, before income tax	141	134
Equity earnings	325	348
Interest income	34	13
Interest expense	(433)	(305)
Income tax (expense) benefit	(57)	(172)
Earnings attributable to noncontrolling interests	(2)	(69)
Earnings attributable to common shares	906	801
Operating Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
CAPITAL EXPENDITURES FOR PROPERTY, PLANT AND EQUIPMENT	2,335	1,933
Equity earnings, before income tax	141	134
Equity earnings, net of tax	184	214
Earnings attributable to common shares	1,016	896
Operating Segments | Sempra California
Revenues from External Customers and Long-Lived Assets [Line Items]
CAPITAL EXPENDITURES FOR PROPERTY, PLANT AND EQUIPMENT	1,094	1,143
Equity earnings	0	0
Revenues	3,401	3,141
Depreciation and amortization	(562)	(521)
Interest income	2	3
Interest expense	(225)	(205)
Income tax (expense) benefit	(52)	(83)
Earnings attributable to noncontrolling interests	0	0
Other segment items	(1,840)	(1,753)
Earnings attributable to common shares	724	582
Operating Segments | Sempra Infrastructure
Revenues from External Customers and Long-Lived Assets [Line Items]
CAPITAL EXPENDITURES FOR PROPERTY, PLANT AND EQUIPMENT	1,241	790
Equity earnings, before income tax	139	132
Equity earnings, net of tax	38	31
Equity earnings	177	163
Revenues	426	519
Depreciation and amortization	(76)	(72)
Interest income	19	5
Interest expense	(77)	0
Income tax (expense) benefit	(22)	(109)
Earnings attributable to noncontrolling interests	(2)	(69)
Other segment items	(299)	(306)
Earnings attributable to common shares	146	131
Operating Segments | Sempra Texas Utilities
Revenues from External Customers and Long-Lived Assets [Line Items]
Equity earnings, before income tax	2	2
Equity earnings, net of tax	146	183
Equity earnings	148	185
Earnings attributable to noncontrolling interests	0	0
Other segment items	(2)	(2)
Earnings attributable to common shares	146	183
Earnings attributable to common shares
Revenues from External Customers and Long-Lived Assets [Line Items]
CAPITAL EXPENDITURES FOR PROPERTY, PLANT AND EQUIPMENT	1	0
Earnings attributable to common shares	$ (110)	$ (95)