Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Premiums Discounts and Issuance Costs of Long Term Debt	$ 3	$ 13
Southern California Edison
Premiums Discounts and Issuance Costs of Long Term Debt	$ 0	$ 13

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