Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019
Discounts and issuance costs of long term debt	$ 26	$ 2
Southern California Edison
Discounts and issuance costs of long term debt	$ 30	$ 6

Premiums, Discounts and Issuance Costs of Long Term Debt

No definition available.

Name:	eix_PremiumsDiscountsandIssuanceCostsofLongTermDebt
Namespace Prefix:	eix_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration