SEGMENT INFORMATION - Revenue By Services (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Energy-related businesses	$ 1,748	$ 2,891	$ 1,788
Revenues from contracts with customers	11,818	14,848	13,722
Revenues	13,185	16,720	14,439
Total assets	96,155	87,181
Operating Segments After Reconciling Items And Eliminations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from contracts with customers	11,818	14,849	13,723
Total other revenues	1,367	1,871	716
Operating Segments After Reconciling Items And Eliminations | Sempra California
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating Revenue	10,985	13,668	11,930
Energy-related businesses	0	0	0
Revenues from contracts with customers	10,985	13,668	11,930
Utilities	374	75	633
Energy-related businesses	0	0	0
Total other revenues	374	75	633
Operating Segments After Reconciling Items And Eliminations | Sempra Infrastructure
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating Revenue	78	87	89
Energy-related businesses	755	1,094	1,704
Revenues from contracts with customers	833	1,181	1,793
Utilities	0	0	0
Energy-related businesses	993	1,796	83
Total other revenues	993	1,796	83
Operating Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	13,264	16,832	14,496
Total assets	94,604	87,252
Operating Segments | Sempra California
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from contracts with customers	11,008	13,686	11,944
Revenues	11,382	13,761	12,577
Total assets	56,116	53,430
Operating Segments | Sempra Infrastructure
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from contracts with customers	896	1,251	1,849
Revenues	1,882	3,071	1,919
Total assets	22,954	19,430
Intersegment revenues
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	(79)	(112)	(57)
Total assets	(1,071)	(1,038)
Intersegment revenues | Sempra California
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating Revenue	(23)	(18)	(14)
Energy-related businesses	0	0	0
Revenues	(23)	(18)	(14)
Intersegment revenues | Sempra Infrastructure
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating Revenue	0	0	0
Energy-related businesses	(56)	(94)	(43)
Revenues	$ (56)	$ (94)	$ (43)