SEMPRA - SEGMENT INFORMATION - SCHEDULE (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Segment Reporting Information, Additional Information [Abstract]
ASSETS	$ 89,604		$ 87,181	[1]
EQUITY METHOD INVESTMENTS	16,780		16,510
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	3,640	$ 6,560
DEPRECIATION AND AMORTIZATION	594	539
INTEREST INCOME	13	24
INTEREST EXPENSE	305	366
INCOME TAX EXPENSE (BENEFIT)	172	376
Equity earnings, before income tax:	134	132
Equity earnings, net of income tax	214	87
Equity earnings	348	219
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	801	969
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT	1,933	1,830
Operating Segments | Sempra California
Segment Reporting Information, Additional Information [Abstract]
ASSETS	54,513		53,430
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	3,141	5,415
DEPRECIATION AND AMORTIZATION	521	468
INTEREST INCOME	3	5
INTEREST EXPENSE	205	187
INCOME TAX EXPENSE (BENEFIT)	83	101
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	582	618
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT	1,143	1,082
Operating Segments | Sempra Texas Utilities
Segment Reporting Information, Additional Information [Abstract]
ASSETS	14,673		14,392
EQUITY METHOD INVESTMENTS	14,661		14,380
Segment Reporting Information, Profit (Loss) [Abstract]
Equity earnings, before income tax:	2	1
Equity earnings, net of income tax	183	83
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	183	83
Operating Segments | Sempra Infrastructure
Segment Reporting Information, Additional Information [Abstract]
ASSETS	20,422		19,430
EQUITY METHOD INVESTMENTS	2,118		2,129
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	519	1,196
DEPRECIATION AND AMORTIZATION	72	69
INTEREST INCOME	5	15
INTEREST EXPENSE	0	95
INCOME TAX EXPENSE (BENEFIT)	109	330
Equity earnings, before income tax:	132	131
Equity earnings, net of income tax	31	4
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	131	315
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT	790	744
All other
Segment Reporting Information, Additional Information [Abstract]
ASSETS	1,016		967
EQUITY METHOD INVESTMENTS	1		1
Segment Reporting Information, Profit (Loss) [Abstract]
DEPRECIATION AND AMORTIZATION	1	2
INTEREST INCOME	5	4
INTEREST EXPENSE	100	84
INCOME TAX EXPENSE (BENEFIT)	(20)	(55)
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	(95)	(47)
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT	0	4
Adjustments and eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	(1)	0
Intersegment revenues and receivables
Segment Reporting Information, Additional Information [Abstract]
ASSETS	(1,020)		$ (1,038)
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	(19)	(51)
Intersegment revenues and receivables | Sempra California
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	5	5
Intersegment revenues and receivables | Sempra Infrastructure
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	$ 14	$ 46

[1] Derived from audited financial statements.