Income Taxes (Deferred Tax Liability) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Property	$ 859	$ 856
Wildfire-related	458	558
Nuclear decommissioning trust assets in excess of nuclear ARO liability	321	517
Loss and credit carryforwards	3,479	3,078
Regulatory balances	641	652
Pension and postretirement benefits other than pensions, net	130	153
Leases	406	543
Other	162	165
Sub-total	6,456	6,522
Less: valuation allowance	39	44
Total	6,417	6,478
Deferred tax liabilities:
Property	10,091	9,645
Regulatory balances	1,462	1,242
Nuclear decommissioning trust assets	321	517
Leases	406	543
Other	225	207
Total	12,505	12,154
Accumulated deferred income tax liability, net	6,088	5,676
Operating loss carryforwards valuation allowance	310	277
Operating loss carryforward
Deferred tax assets:
Less: valuation allowance	35	33
Capital loss from sale of SoCore Energy
Deferred tax assets:
Less: valuation allowance	4	4
Charitable contribution carryover
Deferred tax assets:
Less: valuation allowance		7
SCE
Deferred tax assets:
Property	840	835
Wildfire-related	457	558
Nuclear decommissioning trust assets in excess of nuclear ARO liability	321	517
Loss and credit carryforwards	2,157	1,697
Regulatory balances	641	652
Pension and postretirement benefits other than pensions, net	26	30
Leases	406	543
Other	135	179
Sub-total	4,983	5,011
Less: valuation allowance	0	6
Total	4,983	5,005
Deferred tax liabilities:
Property	10,078	9,633
Regulatory balances	1,462	1,242
Nuclear decommissioning trust assets	321	517
Leases	406	543
Other	200	186
Total	12,467	12,121
Accumulated deferred income tax liability, net	7,484	7,116
Operating loss carryforwards valuation allowance	$ 254	221
SCE | Charitable contribution carryover
Deferred tax assets:
Less: valuation allowance		$ 6