Commitments and Contingencies (Wildfire loss accrual) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Loss contingency accrual roll forward
Wildfire-related claims, current	$ 121	$ 131
Wildfire-related claims, non-current	1,687	1,733
2017/2018 Wildfire/Mudslide Events
Loss contingency accrual roll forward
Beginning balance	1,734
Increase in accrued estimated losses	1,296	1,265
Amounts paid	(1,911)
Ending balance	1,119	1,734
Wildfire-related claims, current	65
Wildfire-related claims, non-current	934	1,603
2017/2018 Wildfire/Mudslide Events | SED Settlement
Loss contingency accrual roll forward
Wildfire-related claims, current	56
Wildfire-related claims, non-current	64
Other Wildfire Related Claims
Loss contingency accrual roll forward
Wildfire-related claims, non-current	689	130
Post-2018 Wildfires
Loss contingency accrual roll forward
Beginning balance	123
Increase in accrued estimated losses	572	7
Amounts paid	(13)
Ending balance	682	123
SCE
Loss contingency accrual roll forward
Wildfire-related claims, current	121	131
Wildfire-related claims, non-current	1,687	1,733
SCE | 2017/2018 Wildfire/Mudslide Events | SED Settlement
Loss contingency accrual roll forward
Amounts paid	(1,700)
SCE | Post-2018 Wildfires
Loss contingency accrual roll forward
Increase in accrued estimated losses	572	$ 7
Amounts paid	(13)
Ending balance	$ 682