Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017
Discounts and issuance costs of long term debt	$ 33	$ 12
Southern California Edison Company
Discounts and issuance costs of long term debt	$ 28	$ 9

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