Property, Plant and Equipment (Textual) (Details) - SCE - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Capitalized software costs	$ 2,100	$ 2,000
Capitalized software, accumulated amortization	900	700
Capitalized software, amortization expense	358	$ 344	$ 311
Capitalized software, estimated amortization year 1	359
Capitalized software, estimated amortization year 2	317
Capitalized software, estimated amortization year 3	253
Capitalized software, estimated amortization year 4	168
Capitalized software, estimated amortization year 5	$ 61
Capitalized software costs | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Capitalized software costs | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	7 years