Regulatory Assets and Liabilities (Textual) (Details) - SCE	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Regulatory Assets
Regulatory assets related to deferred income taxes, recovery period, low range (in years)	1 year	1 year
Regulatory assets related to deferred income taxes, recovery period, high range (in years)	60 years	60 years
Low end of the range of remaining original amortization (in years)	10 years	10 years
High end of the range of remaining original amortization (in years)	40 years	40 years
Unamortized investments, net of accumulated amortization
Regulatory Assets
Return rate earned on assets included in rate base (as a percent)	7.44%	7.68%