Commitments and Contingencies (Wildfire Insurance) (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended	6 Months Ended		12 Months Ended
	May 31, 2023	Aug. 31, 2021	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	Jul. 31, 2019
SCE
Commitments and Contingencies
Rate funded wildfire self-insurance program	$ 150.0
Rate funded wildfire self-insurance program future proceeds, assuming no claims	$ 300.0
Shareholder contribution on self insurance (as a percent)	2.50%
Threshold for insurance costs before shareholder contributions	$ 500.0
Maximum annual shareholder contribution	12.5
Self-insurance fund value	$ 1,000.0
Wildfire insurance coverage						$ 1,000.0	$ 1,000.0
Self insurance						100.0	100.0
Coverage net						937.0
Co-insurance							63.0
Regulatory assets				$ 12,277.0		12,277.0		$ 10,678.0
Wildfire insurance expense						450.0	437.0
SCE | Commercial insurance carriers
Commitments and Contingencies
Coverage net						835.0	875.0
Wildfire insurance expense						357.0	413.0
SCE | Edison Insurance Services-EIS
Commitments and Contingencies
Coverage net						102.0	$ 28.0
2017/2018 Wildfire/Mudslide Events
Commitments and Contingencies
Increase in accrued estimated losses				90.0	$ 416.0
2017/2018 Wildfire/Mudslide Events | SCE
Commitments and Contingencies
Wildfire insurance coverage				1,000.0
Self insurance				10.0
Restoration capital expenditures									$ 60.0
Denied rate increase		$ 8.0
Potential impairment				173.0		173.0
Regulatory assets				43.0		43.0
2017/2018 Wildfire/Mudslide Events | SCE | Aggregate
Commitments and Contingencies
Increase in accrued estimated losses				8,800.0
Litigation settlement				8,300.0
Insurance recoveries				2,000.0
2017/2018 Wildfire/Mudslide Events | SCE | SED Settlement | Aggregate
Commitments and Contingencies
Litigation settlement				65.0
November 2018 Wildfires | SCE
Commitments and Contingencies
Wildfire insurance coverage				1,000.0
Self insurance				10.0
Thomas and Rye wildfires | SCE
Commitments and Contingencies
Denied rate increase		$ 6.0
Post-2018 Wildfires
Commitments and Contingencies
Increase in accrued estimated losses			$ 45.0	6.0	150.0
Insurance recoveries			$ 43.0		$ 139.0
Post-2018 Wildfires | SCE
Commitments and Contingencies
Regulatory assets				166.0		$ 166.0
Post-2018 Wildfires | SCE | Aggregate
Commitments and Contingencies
Increase in accrued estimated losses				702.0
Insurance recoveries				$ 473.0