SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - VARIABLE INTEREST ENTITIES (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Total finance leases	$ 1,343,000,000	$ 1,335,000,000
Property, plant and equipment, net	47,782,000,000	43,894,000,000
Equity method investment	13,665,000,000	12,947,000,000
Assets	78,574,000,000	72,045,000,000
San Diego Gas and Electric Company
Variable Interest Entity [Line Items]
Total finance leases	1,256,000,000	1,274,000,000
Property, plant and equipment, net	21,806,000,000	20,048,000,000
Assets	26,422,000,000	24,058,000,000
San Diego Gas and Electric Company | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Total finance leases	1,194,000,000	1,217,000,000
Sempra Infrastructure | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Debt instrument, maximum borrowing amount	979,000,000
Sempra Infrastructure | Variable Interest Entity, Primary Beneficiary | ECA LNG JV
Variable Interest Entity [Line Items]
Assets	1,099,000,000	632,000,000
Liabilities	685,000,000	455,000,000
Sempra Infrastructure | Cameron LNG JV
Variable Interest Entity [Line Items]
Equity method investment	$ 886,000,000	514,000,000
Oncor Electric Delivery Company LLC | Oncor Holdings
Variable Interest Entity [Line Items]
Ownership percentage held by noncontrolling owners	80.25%
Oncor Holdings | Sempra Texas Utilities
Variable Interest Entity [Line Items]
Equity method investment	$ 13,665,000,000	$ 12,947,000,000