SEGMENT INFORMATION - Schedule of Segment Information Balance Sheet (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025		Jun. 30, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
ASSETS	$ 113,518	$ 110,878	[1]
EQUITY METHOD INVESTMENTS	18,390	17,618
Disposal Group Held-for-sale | SI Partners
Revenues from External Customers and Long-Lived Assets [Line Items]
Equity method investment, held for sale	2,546	2,566
Sempra Texas Utilities
Revenues from External Customers and Long-Lived Assets [Line Items]
EQUITY METHOD INVESTMENTS	18,374	17,601
Sempra Infrastructure
Revenues from External Customers and Long-Lived Assets [Line Items]
EQUITY METHOD INVESTMENTS	16	17
Sempra Infrastructure | Cameron LNG JV | Deferred Credits and Other | Promissory Note for SDSRA Distribution | Corporate Joint Venture
Revenues from External Customers and Long-Lived Assets [Line Items]
Guarantees, carrying value	16	17		$ 22
Operating Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
ASSETS	113,493	110,893
Operating Segments | Sempra California
Revenues from External Customers and Long-Lived Assets [Line Items]
ASSETS	61,138	60,364
Operating Segments | Sempra Texas Utilities
Revenues from External Customers and Long-Lived Assets [Line Items]
ASSETS	18,555	17,733
Operating Segments | Sempra Infrastructure
Revenues from External Customers and Long-Lived Assets [Line Items]
ASSETS	33,800	32,796
Parent and other
Revenues from External Customers and Long-Lived Assets [Line Items]
ASSETS	1,191	1,084
Intersegment eliminations
Revenues from External Customers and Long-Lived Assets [Line Items]
ASSETS	$ (1,166)	$ (1,099)

[1] Derived from audited financial statements.