XML 110 R54.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Income Taxes (Textual) (Details) (USD $) In Millions, unless otherwise specified | Jun. 30, 2013
--- | ---
IRS Examination |
Income Tax Disclosure [Line Items] |
Estimated potential future federal tax payment as of the balance sheet date, including interest and penalties, based on a proposed adjustment | $ 203
Penalty for understatement of tax liability (as a percent) | 40.00%
Southern California Edison |
Income Tax Disclosure [Line Items] |
Estimated federal tax payment as a result of the proposed adjustment to adjust repair allowance deduction | 74
Southern California Edison | IRS Examination |
Income Tax Disclosure [Line Items] |
Estimated potential future federal tax payment as of the balance sheet date, including interest and penalties, based on a proposed adjustment | $ 98

X
- Definition Federal Tax Payment, Estimated Payment, Proposed Adjustment to TAx Repair Allowance Deduction + References No definition available. + Details
Name: | eix_FederalTaxPaymentEstimatedPaymentProposedAdjustmentToTaxRepairAllowanceDeduction
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition Income Tax Examination, Penalties from Examination Percentage + References No definition available. + Details
Name: | eix_IncomeTaxExaminationPenaltiesFromExaminationPercentage
Namespace Prefix: | eix_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The estimated range of reasonably possible losses resulting from an adverse position taken by a taxing authority. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 14 -Paragraph 3 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(3) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
Name: | us-gaap_IncomeTaxExaminationRangeOfPossibleLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant