XML 14 R54.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Income Taxes (Textual) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended | 12 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2014 | Jun. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2015 Tax Years 2003 to 2006 IRS Examination Scenario, Forecast | Sep. 30, 2014 Southern California Edison | Sep. 30, 2013 Southern California Edison | Sep. 30, 2014 Southern California Edison | Sep. 30, 2013 Southern California Edison | Sep. 30, 2014 Southern California Edison Tax Years 2003 to 2006 IRS Examination Proposed Adjustment to Taxable Gain | Sep. 30, 2014 Southern California Edison Tax Years 2003 to 2006 IRS Examination Disallowance of Repair Allowance Deduction | Sep. 30, 2014 Southern California Edison Tax Years 2007 to 2009 IRS Examination Disallowance of Repair Allowance Deduction | Jun. 30, 2014 Southern California Edison Tax Years 2003 to 2010 IRS Examination Disallowance of Repair Allowance Deduction
Income Tax Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reduction to revenue from repair deductions, before tax |  |  |  |  |  |  |  |  | $ 231 |  |  |  |  |
Estimated potential future federal tax payment as of the balance sheet date, including interest and penalties, based on a proposed adjustment |  |  |  |  |  |  |  |  |  |  | 212 | 102 | 76 |
Deposit against IRS tax dispute adjustment |  | 189 |  |  |  |  |  |  |  |  |  |  |  |
Estimated tax benefits |  |  |  |  |  | 50 |  |  |  |  |  | 14 | 16 |
Income Tax Expense (Benefit) | $ (220) |  | $ (177) | $ (284) | $ (173) |  | $ (224) | $ (183) | $ (310) | $ (196) |  |  |  | $ 29

X
- Definition Flow Through Tax Benefits For Repair Deductions Income Statement Effect Before Tax + References No definition available. + Details
Name: | eix_FlowThroughTaxBenefitsForRepairDeductionsIncomeStatementEffectBeforeTax
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition Income Tax Examination, Estimate of Possible Loss, Deposit + References No definition available. + Details
Name: | eix_IncomeTaxExaminationEstimateofPossibleLossDeposit
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Estimated amount of loss resulting from an adverse tax position. + References Reference 1: 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_IncomeTaxExaminationEstimateOfPossibleLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
Name: | us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=29652012&loc=d3e28446-109314 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=29652012&loc=d3e28511-109314 + Details
Name: | us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration