SEGMENT INFORMATION (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) segment	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Aug. 31, 2021	May 31, 2021	Apr. 30, 2021
Segment Reporting Information [Line Items]
Number of reportable segments | segment	4
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	$ 14,439	$ 12,857	$ 11,370
DEPRECIATION AND AMORTIZATION	2,019	1,855	1,666
INTEREST INCOME	75	69	96
INTEREST EXPENSE	1,054	1,198	1,081
Income tax expense (benefit)	556	99	249
Earnings (losses) attributable to common shares	2,094	1,254	3,764
Earnings from discontinued operations attributable to common shares	0	0	1,840
Segment Reporting Information, Additional Information [Abstract]
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT	5,357	5,015	4,676
Total assets	78,574	72,045
Long-lived assets	63,459	58,366	53,831
United States
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	13,015	11,154	10,205
Segment Reporting Information, Additional Information [Abstract]
Long-lived assets	55,035	50,657	46,902
Mexico
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	1,424	1,703	1,165
Segment Reporting Information, Additional Information [Abstract]
Long-lived assets	8,423	7,708	6,929
Asia
Segment Reporting Information, Additional Information [Abstract]
Long-lived assets	1	1	0
Operating Segments | SDG&E
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	5,838	5,504	5,313
DEPRECIATION AND AMORTIZATION	982	889	801
INTEREST INCOME	5	1	2
INTEREST EXPENSE	449	412	413
Income tax expense (benefit)	182	201	190
Earnings (losses) attributable to common shares	915	819	824
Segment Reporting Information, Additional Information [Abstract]
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT	2,473	2,220	1,942
Total assets	26,422	24,058
Operating Segments | SoCalGas
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	6,840	5,515	4,748
DEPRECIATION AND AMORTIZATION	761	716	654
INTEREST INCOME	6	1	2
INTEREST EXPENSE	198	157	158
Income tax expense (benefit)	138	(310)	96
Earnings (losses) attributable to common shares	599	(427)	504
Segment Reporting Information, Additional Information [Abstract]
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT	1,993	1,984	1,843
Total assets	22,346	20,324
Operating Segments | Sempra Texas Utilities
Segment Reporting Information, Profit (Loss) [Abstract]
Income tax expense (benefit)	0	0	1
Earnings (losses) attributable to common shares	736	616	579
Segment Reporting Information, Additional Information [Abstract]
Total assets	13,781	13,047
Operating Segments | Sempra Infrastructure
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	1,919	1,997	1,400
DEPRECIATION AND AMORTIZATION	268	239	198
INTEREST INCOME	44	75	141
INTEREST EXPENSE	104	205	174
Income tax expense (benefit)	249	238	149
Earnings (losses) attributable to common shares	310	682	580
Segment Reporting Information, Additional Information [Abstract]
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT	884	802	879
Total assets	15,760	14,408
All other
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	1	5	2
DEPRECIATION AND AMORTIZATION	8	11	13
INTEREST INCOME	20	3	7
INTEREST EXPENSE	306	444	390
Income tax expense (benefit)	(13)	(30)	(187)
Earnings (losses) attributable to common shares	(466)	(436)	(563)
Segment Reporting Information, Additional Information [Abstract]
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT	7	9	12
Total assets	1,376	1,399
Adjustments and eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	(1)	(1)	(3)
Earnings from discontinued operations attributable to common shares	0	0	1,840
Intersegment revenues
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	(158)	(163)	(90)
INTEREST INCOME	0	(11)	(56)
INTEREST EXPENSE	(3)	(20)	(54)
Segment Reporting Information, Additional Information [Abstract]
Total assets	(1,111)	(1,191)
Intersegment revenues | SDG&E
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	15	10	5
Intersegment revenues | SoCalGas
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	100	98	88
Intersegment revenues | Sempra Infrastructure
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	$ 43	$ 55	$ (3)
Sharyland Utilities | Sempra Texas Utilities
Segment Reporting Information [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	50.00%
Ownership interest (as a percent)	50.00%
Sempra LNG Holding, LP | Sempra Infrastructure
Segment Reporting Information [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	100.00%
Ownership interest (as a percent)	100.00%
IEnova
Segment Reporting Information [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	99.90%			96.40%	96.40%	70.20%
Ownership interest (as a percent)	99.90%			96.40%	96.40%	70.20%
IEnova | Sempra Infrastructure
Segment Reporting Information [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	99.90%
Ownership interest (as a percent)	99.90%
SI Partners | Sempra Infrastructure
Segment Reporting Information [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	70.00%
Ownership interest (as a percent)	70.00%
Oncor Holdings | Oncor Electric Delivery Company LLC | Sempra Texas Utilities
Segment Reporting Information [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	80.25%
Ownership interest (as a percent)	80.25%