Cover Page - shares	6 Months Ended
	Jun. 30, 2020	Jul. 23, 2020
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	1-9936
Entity Registrant Name	EDISON INTERNATIONAL
Entity Incorporation, State or Country Code	CA
IRS Employer Identification Number	95-4137452
Entity Address, Address Line One	2244 Walnut Grove Avenue
Entity Address, Address Line Two	(P.O. Box 976)
Entity Address, City or Town	Rosemead,
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	91770
City Area Code	(626)
Local Phone Number	302-2222
Title of each class	Common Stock, no par value
Trading Symbol	EIX
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		378,220,989
Entity Central Index Key	0000827052
Current Fiscal Year End Date	--12-31
Document Period End Date	Jun. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Amendment Flag	false
Southern California Edison
Entity Information [Line Items]
Document Type	10-Q
Entity File Number	1-2313
Entity Registrant Name	SOUTHERN CALIFORNIA EDISON COMPANY
Entity Incorporation, State or Country Code	CA
IRS Employer Identification Number	95-1240335
Entity Address, Address Line One	2244 Walnut Grove Avenue
Entity Address, Address Line Two	(P.O. Box 800)
Entity Address, City or Town	Rosemead,
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	91770
City Area Code	(626)
Local Phone Number	302-1212
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		434,888,104
Entity Central Index Key	0000092103
Current Fiscal Year End Date	--12-31
Document Period End Date	Jun. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Amendment Flag	false
Southern California Edison | NYSE American LLC | Cumulative Preferred Stock, 4.08% Series
Entity Information [Line Items]
Title of each class	Cumulative Preferred Stock, 4.08% Series
Trading Symbol	SCEpB
Security Exchange Name	NYSEAMER
Southern California Edison | NYSE American LLC | Cumulative Preferred Stock, 4.08% Series
Entity Information [Line Items]
Title of each class	Cumulative Preferred Stock, 4.24% Series
Trading Symbol	SCEpC
Security Exchange Name	NYSEAMER
Southern California Edison | NYSE American LLC | Cumulative Preferred Stock, 4.32% Series
Entity Information [Line Items]
Title of each class	Cumulative Preferred Stock, 4.32% Series
Trading Symbol	SCEpD
Security Exchange Name	NYSEAMER
Southern California Edison | NYSE American LLC | Cumulative Preferred Stock, 4.78% Series
Entity Information [Line Items]
Title of each class	Cumulative Preferred Stock, 4.78% Series
Trading Symbol	SCEpE
Security Exchange Name	NYSEAMER