GENERAL INFORMATION AND OTHER FINANCIAL DATA - VARIABLE INTEREST ENTITIES (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Variable Interest Entities [Line Items]
Property plant and equipment, net	$ 53,172	$ 47,782	[1]
Finance lease obligations	1,346	1,343
Equity method investment	14,148	13,665	[1]
Assets	85,735	78,574	[1]
Oncor Holdings | Sempra Texas Utilities
Variable Interest Entities [Line Items]
Equity method investment	14,148	13,665
Cameron LNG Holdings | Sempra Infrastructure
Variable Interest Entities [Line Items]
Equity method investment	989	886
San Diego Gas and Electric Company
Variable Interest Entities [Line Items]
Property plant and equipment, net	23,088	21,806	[1]
Finance lease obligations	1,234	1,256
Assets	$ 28,502	26,422	[1]
IEnova | ECA LNG JV
Variable Interest Entities [Line Items]
Ownership percentage in consolidated entity (in percentage)	83.40%
Subsidiary of TOTAL SE | ECA LNG JV
Variable Interest Entities [Line Items]
Ownership percentage in consolidated entity (in percentage)	16.60%
Variable Interest Entity, Not Primary Beneficiary | Sempra Infrastructure
Variable Interest Entities [Line Items]
Maximum exposure under guarantor obligations	$ 979
Variable Interest Entity, Not Primary Beneficiary | San Diego Gas and Electric Company
Variable Interest Entities [Line Items]
Property plant and equipment, net	1,174	1,194
Finance lease obligations	1,174	1,194
Variable Interest Entity, Primary Beneficiary | ECA LNG JV | Sempra Infrastructure
Variable Interest Entities [Line Items]
Assets	1,430	1,099
Liabilities	924	$ 685
Variable Interest Entity, Primary Beneficiary | Port Arthur LNG | Sempra Infrastructure
Variable Interest Entities [Line Items]
Assets	3,830
Liabilities	$ 788

[1] Derived from audited financial statements.