COMMITMENTS, CONTINGENCIES AND GUARANTEES - LEASE INCOME STATEMENT INFORMATION (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Lessee, Lease, Description [Line Items]
Operating lease costs	$ 164	$ 118	$ 99
Amortization of ROU assets	69	65	60
Interest on lease liabilities	176	178	182
Total finance lease costs	245	243	242
Short-term lease costs	8	9	9
Variable lease costs	450	472	458
Total lease costs	867	842	808
Purchased-Power Agreements
Lessee, Lease, Description [Line Items]
Operating lease costs	88	37	21
Depreciation and Amortization Expense
Lessee, Lease, Description [Line Items]
Amortization of ROU assets	30	30	29
SDG&E
Lessee, Lease, Description [Line Items]
Operating lease costs	113	71	53
Amortization of ROU assets	43	42	40
Interest on lease liabilities	169	173	177
Total finance lease costs	212	215	217
Short-term lease costs	8	8	8
Variable lease costs	430	460	447
Total lease costs	763	754	725
SDG&E | Purchased-Power Agreements
Lessee, Lease, Description [Line Items]
Operating lease costs	88	37	21
SDG&E | Depreciation and Amortization Expense
Lessee, Lease, Description [Line Items]
Amortization of ROU assets	29	29	28
SoCalGas
Lessee, Lease, Description [Line Items]
Operating lease costs	8	12	13
Amortization of ROU assets	26	23	20
Interest on lease liabilities	7	6	5
Total finance lease costs	33	29	25
Short-term lease costs	0	0	0
Variable lease costs	9	10	10
Total lease costs	50	51	48
SoCalGas | Depreciation and Amortization Expense
Lessee, Lease, Description [Line Items]
Amortization of ROU assets	$ 1	$ 1	$ 1