SEMPRA - SEGMENT INFORMATION - SCHEDULE (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Segment Reporting Information, Additional Information [Abstract]
ASSETS	$ 93,748		$ 93,748		$ 87,181	[1]
EQUITY METHOD AND OTHER INVESTMENTS	17,572		17,572		16,510
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT			5,765	$ 6,074
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	2,776	$ 3,334	9,427	13,229
DEPRECIATION AND AMORTIZATION	614	563	1,811	1,651
INTEREST INCOME	17	19	47	60
INTEREST EXPENSE	328	312	944	995
INCOME TAX (BENEFIT) EXPENSE	(105)	(52)	(63)	499
Equity earnings, before income tax:	132	133	426	418
Equity earnings, net of income tax	322	346	809	668
Equity earnings	454	479	1,235	1,086
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	638	721	2,152	2,293
Operating Segments | Sempra California
Segment Reporting Information, Additional Information [Abstract]
ASSETS	56,220		56,220		53,430
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT			3,329	3,344
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	2,256	2,725	8,022	10,840
DEPRECIATION AND AMORTIZATION	536	491	1,585	1,435
INTEREST INCOME	4	9	12	19
INTEREST EXPENSE	213	196	627	577
INCOME TAX (BENEFIT) EXPENSE	(37)	(20)	90	64
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	247	290	1,145	1,247
Operating Segments | Sempra Texas Utilities
Segment Reporting Information, Additional Information [Abstract]
ASSETS	15,292		15,292		14,392
EQUITY METHOD AND OTHER INVESTMENTS	15,280		15,280		14,380
Segment Reporting Information, Profit (Loss) [Abstract]
INTEREST EXPENSE	1	0	1	0
INCOME TAX (BENEFIT) EXPENSE	1	0	1	0
Equity earnings, before income tax:	2	2	6	5
Equity earnings, net of income tax	261	305	646	548
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	261	305	646	548
Operating Segments | Sempra Infrastructure
Segment Reporting Information, Additional Information [Abstract]
ASSETS	21,828		21,828		19,430
EQUITY METHOD AND OTHER INVESTMENTS	2,291		2,291		2,129
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT			2,433	2,725
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	538	629	1,466	2,485
DEPRECIATION AND AMORTIZATION	76	71	221	210
INTEREST INCOME	7	4	19	25
INTEREST EXPENSE	0	7	0	127
INCOME TAX (BENEFIT) EXPENSE	(43)	24	(67)	555
Equity earnings, before income tax:	130	131	420	413
Equity earnings, net of income tax	61	41	163	120
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	230	223	652	746
All other
Segment Reporting Information, Additional Information [Abstract]
ASSETS	1,434		1,434		967
EQUITY METHOD AND OTHER INVESTMENTS	1		1		1
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT			3	5
Segment Reporting Information, Profit (Loss) [Abstract]
DEPRECIATION AND AMORTIZATION	2	1	5	6
INTEREST INCOME	6	7	17	17
INTEREST EXPENSE	116	109	319	292
INCOME TAX (BENEFIT) EXPENSE	(26)	(56)	(87)	(120)
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	(100)	(97)	(291)	(248)
Adjustments and eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	(1)	1	(1)	(1)
Intersegment revenues and eliminations
Segment Reporting Information, Additional Information [Abstract]
ASSETS	(1,026)		(1,026)		$ (1,038)
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	(17)	(21)	(60)	(95)
INTEREST INCOME	0	(1)	(1)	(1)
INTEREST EXPENSE	(2)	0	(3)	(1)
Intersegment revenues and eliminations | Sempra California
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	6	5	16	14
Intersegment revenues and eliminations | Sempra Infrastructure
Segment Reporting Information, Profit (Loss) [Abstract]
REVENUES	$ 11	$ 16	$ 44	$ 81

[1] Derived from audited financial statements.