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Consolidated Statements of Cash Flows (Parenthetical) (USD $) In Millions, unless otherwise specified | 6 Months Ended
--- | ---
Jun. 30, 2014 | Jun. 30, 2013
Premiums Discounts and Issuance Costs of Long Term Debt | $ 4 | $ 6
Southern California Edison |  |
Premiums Discounts and Issuance Costs of Long Term Debt | $ 2 | $ 6

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- Definition Premiums Discounts and Issuance Costs of Long Term Debt + References No definition available. + Details
Name: | eix_PremiumsDiscountsandIssuanceCostsofLongTermDebt
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration