REVENUES - DISAGGREGATION OF REVENUE (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 2,484	$ 2,892	$ 6,181	$ 8,781
Utilities regulatory revenues	369	38	31	(121)
Other revenues	158	405	439	1,235
Total revenues	3,011	3,335	6,651	9,895
SDG&E
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,047	1,400	2,509	3,165
Utilities regulatory revenues	308	(138)	225	(250)
Total revenues	1,355	1,262	2,734	2,915
SoCalGas
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,246	1,291	3,306	5,132
Utilities regulatory revenues	63	176	(192)	129
Total revenues	1,309	1,467	3,114	5,261
Utilities
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	2,269	2,676	5,772	8,274
Utilities | SDG&E
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,047	1,400	2,509	3,165
Utilities | SoCalGas
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,246	1,291	3,306	5,132
Energy-related businesses
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	215	216	409	507
Gas
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,518	1,680	3,988	6,244
Gas | SDG&E
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	161	252	491	806
Gas | SoCalGas
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,246	1,291	3,306	5,132
Electric
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	966	1,212	2,193	2,537
Electric | SDG&E
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	886	1,148	2,018	2,359
Electric | SoCalGas
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	0	0	0	0
Operating Segments | Sempra California
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	2,256	2,662	5,735	8,236
Utilities regulatory revenues	369	38	31	(121)
Other revenues	0	0	0	0
Total revenues	2,625	2,700	5,766	8,115
Operating Segments | Sempra California | Utilities
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	2,256	2,662	5,735	8,236
Operating Segments | Sempra California | Energy-related businesses
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	0	0	0	0
Operating Segments | Sempra California | Gas
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,374	1,518	3,724	5,883
Operating Segments | Sempra California | Electric
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	882	1,144	2,011	2,353
Operating Segments | Sempra Infrastructure
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	252	254	494	596
Utilities regulatory revenues	0	0	0	0
Other revenues	157	406	434	1,260
Total revenues	409	660	928	1,856
Operating Segments | Sempra Infrastructure | Utilities
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	18	19	48	49
Operating Segments | Sempra Infrastructure | Energy-related businesses
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	234	235	446	547
Operating Segments | Sempra Infrastructure | Gas
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	148	167	273	371
Operating Segments | Sempra Infrastructure | Electric
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	104	87	221	225
Consolidating adjustments and Parent and other
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	(24)	(24)	(48)	(51)
Utilities regulatory revenues	0	0	0	0
Other revenues	1	(1)	5	(25)
Total revenues	(23)	(25)	(43)	(76)
Consolidating adjustments and Parent and other | Utilities
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	(5)	(5)	(11)	(11)
Consolidating adjustments and Parent and other | Energy-related businesses
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	(19)	(19)	(37)	(40)
Consolidating adjustments and Parent and other | Gas
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	(4)	(5)	(9)	(10)
Consolidating adjustments and Parent and other | Electric
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ (20)	$ (19)	$ (39)	$ (41)