COMMITMENTS AND CONTINGENCIES - LEASES CASH FLOW INFORMATION (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Lessee, Lease, Description [Line Items]
Cash paid for operating leases	$ 85	$ 88	$ 78
Cash paid for finance leases	167	169	171
Cash paid for finance leases	60	48	39
Increase in operating lease obligations for ROU assets	143	142	116
Increase in finance lease obligations for investment in PP&E	57	57	43
SDG&E
Lessee, Lease, Description [Line Items]
Cash paid for operating leases	46	45	32
Cash paid for finance leases	162	166	169
Cash paid for finance leases	40	33	27
Increase in operating lease obligations for ROU assets	134	134	112
Increase in finance lease obligations for investment in PP&E	17	16	24
SoCalGas
Lessee, Lease, Description [Line Items]
Cash paid for operating leases	13	18	20
Cash paid for finance leases	5	2	2
Cash paid for finance leases	20	15	12
Increase in operating lease obligations for ROU assets	0	1	1
Increase in finance lease obligations for investment in PP&E	$ 40	$ 41	$ 19