SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - VARIABLE INTEREST ENTITIES (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jul. 31, 2020 project_owner
Variable Interest Entity [Line Items]
Property, plant and equipment, net	$ 61,437	$ 54,960
Total finance leases	1,315	1,340
Equity method investment	15,400	14,266
Assets	96,155	87,181
SDG&E
Variable Interest Entity [Line Items]
Property, plant and equipment, net	25,111	23,549
Total finance leases	1,205	1,233
Assets	30,773	29,185
SDG&E | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Property, plant and equipment, net	1,138	1,166
Total finance leases	1,138	1,166
Cameron LNG
Variable Interest Entity [Line Items]
Number of project owners | project_owner			4
Sempra Infrastructure | Variable Interest Entity, Primary Beneficiary | Port Arthur LNG
Variable Interest Entity [Line Items]
Assets	6,419	3,927
Liabilities	1,584	600
Sempra Infrastructure | Variable Interest Entity, Primary Beneficiary | ECA LNG JV
Variable Interest Entity [Line Items]
Assets	1,758	1,580
Liabilities	1,080	1,029
Sempra Infrastructure | Cameron LNG JV
Variable Interest Entity [Line Items]
Equity method investment	1,149	1,008
Oncor Holdings | Sempra Texas Utilities
Variable Interest Entity [Line Items]
Equity method investment	$ 15,400	$ 14,266
ECA LNG JV | IEnova
Variable Interest Entity [Line Items]
Ownership percentage in consolidated entity	83.40%
ECA LNG JV | Subsidiary of TOTAL SE
Variable Interest Entity [Line Items]
Ownership percentage in consolidated entity	16.60%