COMMITMENTS AND CONTINGENCIES - LEASES CASH FLOW INFORMATION (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
Cash paid for operating leases	$ 88	$ 78	$ 79
Cash paid for finance leases	169	171	173
Cash paid for finance leases	48	39	35
Increase (decrease) in operating lease obligations for ROU assets	142	116	20
Increase in finance lease obligations for investment in PP&E	57	43	77
San Diego Gas and Electric Company
Lessee, Lease, Description [Line Items]
Cash paid for operating leases	45	32	31
Cash paid for finance leases	166	169	171
Cash paid for finance leases	33	27	23
Increase (decrease) in operating lease obligations for ROU assets	134	112	(1)
Increase in finance lease obligations for investment in PP&E	16	24	30
SoCalGas
Lessee, Lease, Description [Line Items]
Cash paid for operating leases	18	20	24
Cash paid for finance leases	2	2	2
Cash paid for finance leases	15	12	12
Increase (decrease) in operating lease obligations for ROU assets	1	1	1
Increase in finance lease obligations for investment in PP&E	$ 41	$ 19	$ 47