Regulatory Assets and Liabilities (Textual) (Details) - SCE	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Regulatory Assets [Line Items]
Regulatory assets, energy derivatives, low range of contract expiration (in years)	1 year	1 year
Regulatory assets, energy derivatives, high range of contract expiration (in years)	4 years	4 years
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 [Line Items]
Return rate earned on assets included in rate base (as a percent)	7.68%	7.68%