Commitments and Contingencies (Wildfire Insurance) (Details) - USD ($) $ in Millions	1 Months Ended	6 Months Ended	12 Months Ended
	Aug. 31, 2021	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2021	Jul. 31, 2019
SCE
Commitments and Contingencies
Wildfire insurance coverage			$ 1,000	$ 1,000
Self insurance			50	50
Regulatory assets		$ 9,884		9,884	$ 9,438
Co-insurance		75	13	75
Coverage net			937
Wildfire insurance expense			450	437
SCE | Commercial insurance carriers
Commitments and Contingencies
Coverage net			835	875
Wildfire insurance expense			357	413
SCE | Edison Insurance Services-EIS
Commitments and Contingencies
Coverage net			$ 102	28
2017/2018 Wildfire/Mudslide Events
Commitments and Contingencies
Increase in accrued estimated losses		416
Regulatory assets		134		134
2017/2018 Wildfire/Mudslide Events | SCE
Commitments and Contingencies
Wildfire insurance coverage		1,000
Self insurance		10
Restoration capital expenditures						$ 60
Denied rate increase	$ 8
Potential impairment		182
Expected FERC cumulative recoveries		326		326
Regulatory assets		134		$ 134
2017/2018 Wildfire/Mudslide Events | SCE | Aggregate
Commitments and Contingencies
Increase in accrued estimated losses		7,900
Litigation settlement		7,000
Insurance settlements and recoveries		2,000
November 2018 Wildfires | SCE
Commitments and Contingencies
Wildfire insurance coverage		1,000
Self insurance		$ 10
Thomas and Rye wildfires | SCE
Commitments and Contingencies
Denied rate increase	$ 6