Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014
Premiums Discounts and Issuance Costs of Long Term Debt	$ 16	$ 5
Southern California Edison
Premiums Discounts and Issuance Costs of Long Term Debt	$ 16	$ 2

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