REVENUES - DISAGGREGATION OF REVENUE (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 3,697	$ 5,889
Utilities regulatory revenues	(338)	(159)
Other revenues	281	830
Total revenues	3,640	6,560
SDG&E
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,462	1,765
Utilities regulatory revenues	(83)	(112)
Total revenues	1,379	1,653
SoCalGas
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	2,060	3,841
Utilities regulatory revenues	(255)	(47)
Total revenues	1,805	3,794
Utilities
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	3,503	5,598
Utilities | SDG&E
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,462	1,765
Utilities | SoCalGas
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	2,060	3,841
Energy-related businesses
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	194	291
Gas
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	2,470	4,564
Gas | SDG&E
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	330	554
Gas | SoCalGas
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	2,060	3,841
Electric
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,227	1,325
Electric | SDG&E
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,132	1,211
Electric | SoCalGas
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	0	0
Operating Segments | Sempra Infrastructure
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	242	342
Utilities regulatory revenues	0	0
Other revenues	277	854
Total revenues	519	1,196
Operating Segments | Sempra Infrastructure | Utilities
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	30	30
Operating Segments | Sempra Infrastructure | Energy-related businesses
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	212	312
Operating Segments | Sempra Infrastructure | Gas
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	125	204
Operating Segments | Sempra Infrastructure | Electric
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	117	138
Operating Segments | Sempra California
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	3,479	5,574
Utilities regulatory revenues	(338)	(159)
Other revenues	0	0
Total revenues	3,141	5,415
Operating Segments | Sempra California | Utilities
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	3,479	5,574
Operating Segments | Sempra California | Energy-related businesses
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	0	0
Operating Segments | Sempra California | Gas
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	2,350	4,365
Operating Segments | Sempra California | Electric
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,129	1,209
Consolidation, Eliminations
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	(24)	(27)
Utilities regulatory revenues	0	0
Other revenues	4	(24)
Total revenues	(20)	(51)
Consolidation, Eliminations | Utilities
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	(6)	(6)
Consolidation, Eliminations | Energy-related businesses
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	(18)	(21)
Consolidation, Eliminations | Gas
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	(5)	(5)
Consolidation, Eliminations | Electric
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ (19)	$ (22)