XML 36 R76.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Compensation and Benefit Plans (Employee Savings Plan) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Defined Contribution Plans [Line Items] |  |  |
Employer contributions | $ 71 us-gaap_DefinedContributionPlanCostRecognized | $ 76 us-gaap_DefinedContributionPlanCostRecognized | $ 85 us-gaap_DefinedContributionPlanCostRecognized
Southern California Edison |  |  |
Defined Contribution Plans [Line Items] |  |  |
Employer contributions | $ 70 us-gaap_DefinedContributionPlanCostRecognized / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | $ 76 us-gaap_DefinedContributionPlanCostRecognized / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | $ 84 us-gaap_DefinedContributionPlanCostRecognized / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember

X
- Details
Name: | eix_DefinedContributionPlansLineItems
Namespace Prefix: | eix_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=eix_SouthernCaliforniaEdisonCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |