GENERAL INFORMATION AND OTHER FINANCIAL DATA - VARIABLE INTEREST ENTITIES (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Variable Interest Entities [Line Items]
Property plant and equipment, net	$ 45,402	$ 43,894	[1]
Finance lease obligations	1,334	1,335
Equity method investment	13,301	12,947	[1]
Investment in Oncor Holdings	13,301	12,947	[1]
Assets	75,582	72,045	[1]
Sempra Texas Utilities | Oncor Holdings
Variable Interest Entities [Line Items]
Equity method investment	13,301	12,947
Investment in Oncor Holdings	13,301	12,947
Sempra Infrastructure | Cameron LNG Holdings
Variable Interest Entities [Line Items]
Equity method investment	723	514
Investment in Oncor Holdings	723	514
Sempra Infrastructure | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entities [Line Items]
Maximum exposure under guarantor obligations	979
Sempra Infrastructure | Variable Interest Entity, Primary Beneficiary | ECA LNG JV
Variable Interest Entities [Line Items]
Assets	767	632
Liabilities	532	455
San Diego Gas and Electric Company
Variable Interest Entities [Line Items]
Property plant and equipment, net	20,741	20,048	[1]
Finance lease obligations	1,266	1,274
Assets	25,075	24,058	[1]
San Diego Gas and Electric Company | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entities [Line Items]
Property plant and equipment, net	1,206	1,217
Finance lease obligations	$ 1,206	$ 1,217
Oncor Electric Delivery Company LLC. | Oncor Holdings | Sempra Texas Utilities
Variable Interest Entities [Line Items]
Ownership interest (as a percent)	80.25%
Sempra Texas Holdings Corp | Oncor Holdings | Sempra Texas Intermediate Holding Company LLC
Variable Interest Entities [Line Items]
Ownership percentage in consolidated entity	100.00%

[1] Derived from audited financial statements.