Other Income and (Expenses) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
SCE other income and (expenses):
Total other income and (expenses)	$ 193	$ 197	$ 132
Edison International Parent and Other
SCE other income and (expenses):
Net periodic benefit income – non-service components	(3)	(2)	(14)
Other	1	5	(2)
SCE
SCE other income and (expenses):
Equity allowance for funds used during construction	101	104	87
Increase in cash surrender value of life insurance policies and life insurance benefits	39	36	42
Interest income	37	24	7
Net periodic benefit income – non-service components	70	81	51
Civic, political and related activities and donations	(46)	(44)	(34)
Other expense	(6)	(7)	(5)
Total other income and (expenses)	$ 195	$ 194	$ 148