COMMITMENTS AND CONTINGENCIES - LEASE INCOME STATEMENT INFORMATION (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
Operating lease costs	$ 83	$ 89	$ 92
Amortization of ROU assets	48	39	35
Interest on lease liabilities	184	186	188
Total finance lease costs	232	225	223
Short-term lease costs	3	7	7
Variable lease costs	411	432	477
Total lease costs	729	753	799
Depreciation and Amortization Expense
Lessee, Lease, Description [Line Items]
Amortization of ROU assets	25	22	18
San Diego Gas and Electric Company
Lessee, Lease, Description [Line Items]
Operating lease costs	45	32	31
Amortization of ROU assets	33	27	23
Interest on lease liabilities	181	184	186
Total finance lease costs	214	211	209
Short-term lease costs	2	1	3
Variable lease costs	399	422	467
Total lease costs	660	666	710
San Diego Gas and Electric Company | Depreciation and Amortization Expense
Lessee, Lease, Description [Line Items]
Amortization of ROU assets	24	21	18
SoCalGas
Lessee, Lease, Description [Line Items]
Operating lease costs	18	20	24
Amortization of ROU assets	15	12	12
Interest on lease liabilities	2	2	2
Total finance lease costs	17	14	14
Short-term lease costs	0	0	0
Variable lease costs	11	10	10
Total lease costs	46	44	$ 48
SoCalGas | Depreciation and Amortization Expense
Lessee, Lease, Description [Line Items]
Amortization of ROU assets	$ 1	$ 1