Other Income and Expenses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
SCE other income and (expenses):
Total other income and (expenses)	$ 197	$ 132	$ 109
Edison International Parent and Other
SCE other income and (expenses):
Net periodic benefit income – non-service components	(2)	(14)	(5)
Other income	5		0
Other expense		(2)
SCE
SCE other income and (expenses):
Equity allowance for funds used during construction	104	87	74
Increase in cash surrender value of life insurance policies and life insurance benefits	36	42	39
Interest income	24	7	3
Net periodic benefit income – non-service components	81	51	35
Civic, political and related activities and donations	(44)	(34)	(32)
Other expense	(7)	(5)	(5)
Total other income and (expenses)	$ 194	$ 148	$ 114