COMMITMENTS AND CONTINGENCIES - LEASES BALANCE SHEET INFORMATION (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Lessee, Lease, Description [Line Items]
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, plant and equipment, net	Property, plant and equipment, net
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other current liabilities	Other current liabilities
Right-of-use assets – operating leases	$ 1,177	$ 723
Finance leases, property plant and equipment	1,626	1,585
Finance leases, accumulated depreciation	(311)	(246)
Finance leases, property plant and equipment, net	1,315	1,339
Total ROU assets	2,492	2,062
Operating lease, other current liabilities	$ 91	$ 70
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Deferred credits and other	Deferred credits and other
Operating lease, deferred credits and other	$ 1,019	$ 599
Total lease liabilities	$ 1,110	$ 669
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Current portion of long-term debt and finance leases	Current portion of long-term debt and finance leases
Finance lease, current portion of long-term debt and finance leases	$ 65	$ 64
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term debt	Long-term debt
Long-term debt and finance leases	$ 1,250	$ 1,276
Total finance leases	1,315	1,340
Total lease liabilities	$ 2,425	$ 2,009
Operating lease, weighted-average remaining lease term	13 years	13 years
Finance lease, weighted-average remaining lease term	14 years	15 years
Operating lease, weighted-average discount rate (as a percent)	6.10%	6.64%
Finance lease, weighted-average discount rate (as a percent)	13.71%	13.80%
Other Operating Leases
Lessee, Lease, Description [Line Items]
Operating lease, weighted-average discount rate (as a percent)	7.41%	7.57%
Purchased-Power Agreements
Lessee, Lease, Description [Line Items]
Operating lease, other current liabilities	$ 43	$ 18
Operating lease, deferred credits and other	$ 627	$ 208
Operating lease, weighted-average discount rate (as a percent)	5.04%	4.19%
SDG&E
Lessee, Lease, Description [Line Items]
Right-of-use assets – operating leases	$ 795	$ 368
Finance leases, property plant and equipment	1,426	1,412
Finance leases, accumulated depreciation	(221)	(179)
Finance leases, property plant and equipment, net	1,205	1,233
Total ROU assets	2,000	1,601
Operating lease, other current liabilities	68	50
Operating lease, deferred credits and other	734	325
Total lease liabilities	802	375
Finance lease, current portion of long-term debt and finance leases	42	41
Long-term debt and finance leases	1,163	1,192
Total finance leases	1,205	1,233
Total lease liabilities	$ 2,007	$ 1,608
Operating lease, weighted-average remaining lease term	12 years	10 years
Finance lease, weighted-average remaining lease term	15 years	16 years
Operating lease, weighted-average discount rate (as a percent)	5.06%	4.52%
Finance lease, weighted-average discount rate (as a percent)	14.11%	14.18%
SDG&E | Purchased-Power Agreements
Lessee, Lease, Description [Line Items]
Variable payments, year one	$ 79
Variable payments, due year five	80
Thereafter	440
Operating lease, other current liabilities	43	$ 18
Operating lease, deferred credits and other	$ 627	$ 208
Operating lease, weighted-average discount rate (as a percent)	5.04%	4.19%
SoCalGas
Lessee, Lease, Description [Line Items]
Right-of-use assets – operating leases	$ 18	$ 29
Finance leases, property plant and equipment	200	173
Finance leases, accumulated depreciation	(90)	(66)
Finance leases, property plant and equipment, net	110	107
Total ROU assets	128	136
Operating lease, other current liabilities	8	10
Operating lease, deferred credits and other	9	18
Total lease liabilities	17	28
Finance lease, current portion of long-term debt and finance leases	23	23
Long-term debt and finance leases	87	84
Total finance leases	110	107
Total lease liabilities	$ 127	$ 135
Operating lease, weighted-average remaining lease term	2 years	3 years
Finance lease, weighted-average remaining lease term	6 years	6 years
Operating lease, weighted-average discount rate (as a percent)	4.70%	4.54%
Finance lease, weighted-average discount rate (as a percent)	5.35%	4.94%
SDG&E
Lessee, Lease, Description [Line Items]
Variable payments, year one	$ 296
Variable payments, due year two	290
Variable payments, due year three	289
Variable payments, due year four	290
Variable payments, due year five	289
Thereafter	$ 1,900
SDG&E | Other Operating Leases
Lessee, Lease, Description [Line Items]
Operating lease, weighted-average discount rate (as a percent)	5.23%	5.06%
Maximum
Lessee, Lease, Description [Line Items]
Operating lease renewal period	25 years
Annual increase in rent, percent	5.00%
Minimum
Lessee, Lease, Description [Line Items]
Operating lease termination period	1 year
Annual increase in rent, percent	2.00%