SEGMENT INFORMATION (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) segment	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	4
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	$ 6,560	$ 3,820
DEPRECIATION AND AMORTIZATION	539	493
INTEREST INCOME	24	25
INTEREST EXPENSE	366	243
INCOME TAX EXPENSE (BENEFIT)	376	334
Equity earnings, before income tax:	132	143
Equity earnings, net of income tax:	87	183
Equity earnings	219	326
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	969	612
Segment Reporting Information, Additional Information [Abstract]
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT	1,830	1,204
ASSETS	80,549		$ 78,574	[1]
EQUITY METHOD INVESTMENTS	15,736		15,677
Operating Segments | SDG&E
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	1,653	1,445
DEPRECIATION AND AMORTIZATION	262	239
INTEREST INCOME	1	0
INTEREST EXPENSE	118	106
INCOME TAX EXPENSE (BENEFIT)	7	64
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	258	234
Segment Reporting Information, Additional Information [Abstract]
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT	624	552
ASSETS	27,188		26,422
Operating Segments | SoCalGas
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	3,794	1,993
DEPRECIATION AND AMORTIZATION	206	187
INTEREST INCOME	4	0
INTEREST EXPENSE	69	40
INCOME TAX EXPENSE (BENEFIT)	94	84
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	360	334
Segment Reporting Information, Additional Information [Abstract]
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT	458	468
ASSETS	22,776		22,346
Operating Segments | Sempra Texas Utilities
Segment Reporting Information, Profit (Loss) [Abstract]
Equity earnings, before income tax:	1	2
Equity earnings, net of income tax:	83	162
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	83	162
Segment Reporting Information, Additional Information [Abstract]
ASSETS	13,852		13,781
EQUITY METHOD INVESTMENTS	13,843		13,772
Operating Segments | Sempra Infrastructure
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	1,196	424
DEPRECIATION AND AMORTIZATION	69	65
INTEREST INCOME	15	21
INTEREST EXPENSE	95	27
INCOME TAX EXPENSE (BENEFIT)	330	91
Equity earnings, before income tax:	131	141
Equity earnings, net of income tax:	4	21
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	315	95
Segment Reporting Information, Additional Information [Abstract]
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT	744	182
ASSETS	16,547		15,760
EQUITY METHOD INVESTMENTS	1,893		1,905
Adjustments and eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	1	2
All other
Segment Reporting Information, Profit (Loss) [Abstract]
DEPRECIATION AND AMORTIZATION	2	2
INTEREST INCOME	4	4
INTEREST EXPENSE	84	70
INCOME TAX EXPENSE (BENEFIT)	(55)	95
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	(47)	(213)
Segment Reporting Information, Additional Information [Abstract]
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT	4	2
ASSETS	1,282		1,376
Intersegment revenues
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	(84)	(44)
Segment Reporting Information, Additional Information [Abstract]
ASSETS	(1,096)		$ (1,111)
Intersegment revenues | SDG&E
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	(4)	(4)
Intersegment revenues | SoCalGas
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	(34)	(26)
Intersegment revenues | Sempra Infrastructure
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	$ (46)	$ (14)
Oncor Electric Delivery Company LLC Additional Acquisition | Sempra Texas Utilities
Segment Reporting Information [Line Items]
Acquired percentage interest	80.25%
Sharyland Holdings, LP | Sempra Texas Utilities
Segment Reporting Information [Line Items]
Acquired percentage interest	50.00%

[1] Derived from audited financial statements.