SEMPRA - SEGMENT INFORMATION - Schedule of Segment Information Income Statement and Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
REVENUES	$ 16,720	$ 14,439	$ 12,857
DEPRECIATION AND AMORTIZATION	2,227	2,019	1,855
INTEREST INCOME	89	75	69
INTEREST EXPENSE	1,309	1,054	1,198
INCOME TAX (BENEFIT) EXPENSE	490	556	99
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	3,030	2,094	1,254
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT	8,397	5,357	5,015
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
REVENUES	14,973	13,015	11,154
Mexico
Revenues from External Customers and Long-Lived Assets [Line Items]
REVENUES	1,747	1,424	1,703
Operating Segments | Sempra California
Revenues from External Customers and Long-Lived Assets [Line Items]
REVENUES	13,761	12,577	10,926
DEPRECIATION AND AMORTIZATION	1,937	1,743	1,605
INTEREST INCOME	24	11	2
INTEREST EXPENSE	782	647	569
INCOME TAX (BENEFIT) EXPENSE	(31)	320	(109)
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	1,747	1,514	392
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT	4,560	4,466	4,204
Operating Segments | Sempra Infrastructure
Revenues from External Customers and Long-Lived Assets [Line Items]
REVENUES	3,071	1,919	1,997
DEPRECIATION AND AMORTIZATION	281	268	239
INTEREST INCOME	43	44	75
INTEREST EXPENSE	129	104	205
INCOME TAX (BENEFIT) EXPENSE	673	249	238
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	877	310	682
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT	3,832	884	802
Operating Segments | Sempra Texas Utilities
Revenues from External Customers and Long-Lived Assets [Line Items]
INTEREST EXPENSE	1	0	0
INCOME TAX (BENEFIT) EXPENSE	1	0	0
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	694	736	616
All other
Revenues from External Customers and Long-Lived Assets [Line Items]
REVENUES	1	1	5
DEPRECIATION AND AMORTIZATION	9	8	11
INTEREST INCOME	23	20	3
INTEREST EXPENSE	400	306	444
INCOME TAX (BENEFIT) EXPENSE	(153)	(13)	(30)
EARNINGS (LOSSES) ATTRIBUTABLE TO COMMON SHARES	(288)	(466)	(436)
EXPENDITURES FOR PROPERTY, PLANT & EQUIPMENT	5	7	9
Adjustments and eliminations
Revenues from External Customers and Long-Lived Assets [Line Items]
REVENUES	(1)	(1)	0
Intersegment revenues
Revenues from External Customers and Long-Lived Assets [Line Items]
REVENUES	(112)	(57)	(71)
INTEREST INCOME	(1)	0	(11)
INTEREST EXPENSE	(3)	(3)	(20)
Intersegment revenues | Sempra California
Revenues from External Customers and Long-Lived Assets [Line Items]
REVENUES	18	14	16
Intersegment revenues | Sempra Infrastructure
Revenues from External Customers and Long-Lived Assets [Line Items]
REVENUES	$ 94	$ 43	$ 55