COMMITMENTS, CONTINGENCIES AND GUARANTEES - LEASES BALANCE SHEET INFORMATION (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Existence of Residual Value Guarantee [true false]	false
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
Operating Lease, Right-of-Use Asset	$ 1,262	$ 1,177
Finance leases, property plant and equipment	1,673	1,626
Finance leases, accumulated depreciation	(380)	(311)
Finance leases, property plant and equipment, net	1,293	1,315
Total ROU assets	2,555	2,492
Operating lease, other current liabilities	$ 90	$ 91
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Deferred credits and other	Deferred credits and other
Operating lease, deferred credits and other	$ 1,176	$ 1,019
Total lease liabilities	$ 1,266	$ 1,110
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	$ 73	$ 65
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term debt	Long-term debt
Long-term debt and finance leases	$ 1,220	$ 1,250
Total finance leases	1,293	1,315
Total lease liabilities	$ 2,559	$ 2,425
Operating lease, weighted-average remaining lease term	12 years	13 years
Finance lease, weighted-average remaining lease term	13 years	14 years
Operating lease, weighted-average discount rate (as a percent)	5.18%	6.10%
Finance lease, weighted-average discount rate (as a percent)	13.65%	13.71%
Disposal Group Held-for-sale | SI Partners
Lessee, Lease, Description [Line Items]
Right-of-use assets – operating leases	$ 206
Operating lease liabilities, held for sale	$ 143
Other Operating Leases
Lessee, Lease, Description [Line Items]
Operating lease, weighted-average discount rate (as a percent)	5.05%	7.41%
Purchased-Power Agreements
Lessee, Lease, Description [Line Items]
Operating lease, other current liabilities	$ 58	$ 43
Operating lease, deferred credits and other	$ 854	$ 627
Operating lease, weighted-average discount rate (as a percent)	5.23%	5.04%
SDG&E
Lessee, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset	$ 1,047	$ 795
Finance leases, property plant and equipment	1,440	1,426
Finance leases, accumulated depreciation	(264)	(221)
Finance leases, property plant and equipment, net	1,176	1,205
Total ROU assets	2,223	2,000
Operating lease, other current liabilities	85	68
Operating lease, deferred credits and other	969	734
Total lease liabilities	1,054	802
Finance lease, current portion of long-term debt and finance leases	48	42
Long-term debt and finance leases	1,128	1,163
Total finance leases	1,176	1,205
Total lease liabilities	$ 2,230	$ 2,007
Operating lease, weighted-average remaining lease term	12 years	12 years
Finance lease, weighted-average remaining lease term	14 years	15 years
Operating lease, weighted-average discount rate (as a percent)	5.25%	5.06%
Finance lease, weighted-average discount rate (as a percent)	14.08%	14.11%
SDG&E | Purchased-Power Agreements
Lessee, Lease, Description [Line Items]
Variable payments, year one	$ 79
Variable payments, due year five	80
Thereafter	361
Operating lease, other current liabilities	58	$ 43
Operating lease, deferred credits and other	$ 854	$ 627
Operating lease, weighted-average discount rate (as a percent)	5.23%	5.04%
SoCalGas
Lessee, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset	$ 68	$ 18
Finance leases, property plant and equipment	233	200
Finance leases, accumulated depreciation	(116)	(90)
Finance leases, property plant and equipment, net	117	110
Total ROU assets	185	128
Operating lease, other current liabilities	0	8
Operating lease, deferred credits and other	67	9
Total lease liabilities	67	17
Finance lease, current portion of long-term debt and finance leases	25	23
Long-term debt and finance leases	92	87
Total finance leases	117	110
Total lease liabilities	$ 184	$ 127
Operating lease, weighted-average remaining lease term	15 years	2 years
Finance lease, weighted-average remaining lease term	6 years	6 years
Operating lease, weighted-average discount rate (as a percent)	5.19%	4.70%
Finance lease, weighted-average discount rate (as a percent)	5.67%	5.35%
SDG&E
Lessee, Lease, Description [Line Items]
Variable payments, year one	$ 290
Variable payments, due year two	289
Variable payments, due year three	290
Variable payments, due year four	289
Variable payments, due year five	289
Thereafter	$ 1,600
SDG&E | Other Operating Leases
Lessee, Lease, Description [Line Items]
Operating lease, weighted-average discount rate (as a percent)	5.37%	5.23%
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%