Other Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
SCE other income (expense):
Total SCE other income	$ 81	$ 55	$ 133	$ 93
Other income (expense) of Edison International Parent and Other:
Other	81	55	133	93
Total Edison International other income	81	55	133	93
Edison International Parent and Other
SCE other income (expense):
Net periodic benefit costs – non-service components	0	0	(1)	(2)
Other income (expense) of Edison International Parent and Other:
Net periodic benefit costs – non-service components	0	0	(1)	(2)
Other	(1)	(1)	0	1
Southern California Edison
SCE other income (expense):
Equity allowance for funds used during construction	30	32	51	49
Increase in cash surrender value of life insurance policies	23	9	33	18
Interest income	7	7	16	16
Net periodic benefit costs – non-service components	27	16	55	35
Civic, political and related activities and donations	(4)	(8)	(15)	(21)
Other	(1)	0	(6)	(3)
Total SCE other income	82	56	134	94
Other income (expense) of Edison International Parent and Other:
Net periodic benefit costs – non-service components	27	16	55	35
Other	82	56	134	94
Total Edison International other income	$ 82	$ 56	$ 134	$ 94