COMMITMENTS AND CONTINGENCIES - LEASES BALANCE SHEET INFORMATION (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Lessee, Lease, Description [Line Items]
Right-of-use assets – operating leases	$ 655	$ 594
Finance leases, property plant and equipment	1,529	1,473
Finance leases, accumulated depreciation	$ (186)	$ (138)
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, plant and equipment, net	Property, plant and equipment, net
Finance leases, property plant and equipment, net	$ 1,343	$ 1,335
Total ROU assets	$ 1,998	$ 1,929
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other current liabilities	Other current liabilities
Operating lease, other current liabilities	$ 53	$ 49
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Deferred credits and other	Deferred credits and other
Operating lease, deferred credits and other	$ 528	$ 470
Total lease liabilities	$ 581	$ 519
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	$ 57	$ 43
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term debt	Long-term debt
Long-term debt and finance leases	$ 1,286	$ 1,292
Total finance leases	1,343	1,335
Lease liabilities	$ 1,924	$ 1,854
Operating lease, weighted-average remaining lease term	14 years	14 years
Finance lease, weighted-average remaining lease term	16 years	17 years
Operating lease, weighted-average discount rate (as a percent)	6.21%	5.45%
Finance lease, weighted-average discount rate (as a percent)	14.04%	14.25%
SDG&E
Lessee, Lease, Description [Line Items]
Variable payments, due in 2023	$ 297
Variable payments, due in 2024	297
Variable payments, due in 2025	296
Variable payments, due in 2026	290
Variable payments, due in 2027	289
Variable payments, due thereafter	2,496
San Diego Gas and Electric Company
Lessee, Lease, Description [Line Items]
Right-of-use assets – operating leases	281	$ 185
Finance leases, property plant and equipment	1,395	1,381
Finance leases, accumulated depreciation	(140)	(107)
Finance leases, property plant and equipment, net	1,255	1,274
Total ROU assets	1,536	1,459
Operating lease, other current liabilities	32	26
Operating lease, deferred credits and other	249	159
Total lease liabilities	281	185
Finance lease, current portion of long-term debt and finance leases	39	32
Long-term debt and finance leases	1,217	1,242
Total finance leases	1,256	1,274
Lease liabilities	$ 1,537	$ 1,459
Operating lease, weighted-average remaining lease term	11 years	11 years
Finance lease, weighted-average remaining lease term	17 years	17 years
Operating lease, weighted-average discount rate (as a percent)	4.06%	3.22%
Finance lease, weighted-average discount rate (as a percent)	14.35%	14.48%
SoCalGas
Lessee, Lease, Description [Line Items]
Right-of-use assets – operating leases	$ 42	$ 57
Finance leases, property plant and equipment	133	92
Finance leases, accumulated depreciation	(46)	(31)
Finance leases, property plant and equipment, net	87	61
Total ROU assets	129	118
Operating lease, other current liabilities	11	15
Operating lease, deferred credits and other	29	41
Total lease liabilities	40	56
Finance lease, current portion of long-term debt and finance leases	18	11
Long-term debt and finance leases	69	50
Total finance leases	87	61
Lease liabilities	$ 127	$ 117
Operating lease, weighted-average remaining lease term	4 years	4 years
Finance lease, weighted-average remaining lease term	6 years	7 years
Operating lease, weighted-average discount rate (as a percent)	1.80%	1.98%
Finance lease, weighted-average discount rate (as a percent)	4.14%	2.91%
Maximum
Lessee, Lease, Description [Line Items]
Operating lease renewal period	25 years
Annual increase in rent, percent	7.00%
Minimum
Lessee, Lease, Description [Line Items]
Operating lease termination period	1 year
Annual increase in rent, percent	2.00%