SEGMENT INFORMATION - Schedule of Segment Information Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Revenues from External Customers and Long-Lived Assets [Line Items]
Total assets	$ 110,878	$ 96,155
Equity method investments	17,618	17,933
Long-lived assets	49,011	61,437
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	48,622	52,952
Mexico
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	389	8,485
Sempra Texas Utilities
Revenues from External Customers and Long-Lived Assets [Line Items]
Equity method investments	17,601	15,522
Sempra Infrastructure
Revenues from External Customers and Long-Lived Assets [Line Items]
Equity method investments	17	2,411
Operating Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Total assets	110,893	94,604
Operating Segments | Sempra California
Revenues from External Customers and Long-Lived Assets [Line Items]
Total assets	60,364	56,116
Operating Segments | Sempra Texas Utilities
Revenues from External Customers and Long-Lived Assets [Line Items]
Total assets	17,733	15,534
Operating Segments | Sempra Infrastructure
Revenues from External Customers and Long-Lived Assets [Line Items]
Total assets	32,796	22,954
Parent and other
Revenues from External Customers and Long-Lived Assets [Line Items]
Total assets	1,084	2,622
Intersegment eliminations
Revenues from External Customers and Long-Lived Assets [Line Items]
Total assets	$ (1,099)	$ (1,071)