XML 32 R57.htm IDEA: XBRL DOCUMENT
v2.4.0.8

San Onofre Issues (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended | 12 Months Ended |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 0 Months Ended | 3 Months Ended | 6 Months Ended | 16 Months Ended |  |  | 6 Months Ended | 12 Months Ended |  |  |  |  | 6 Months Ended |  |  |  | 6 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Dec. 31, 2013 San Onofre (nuclear) | Feb. 22, 2014 San Onofre (nuclear) Insurance Claims [Member] | Dec. 31, 2011 Southern California Edison | Jun. 30, 2014 Southern California Edison | Jun. 30, 2013 Southern California Edison | Jun. 30, 2014 Southern California Edison | Jun. 30, 2013 Southern California Edison | Mar. 27, 2014 Southern California Edison San Onofre (nuclear) | Feb. 01, 2012 Southern California Edison San Onofre (nuclear) | Mar. 31, 2014 Southern California Edison San Onofre (nuclear) | Jun. 30, 2013 Southern California Edison San Onofre (nuclear) | Jun. 30, 2014 Southern California Edison San Onofre (nuclear) | Jun. 30, 2013 Southern California Edison San Onofre (nuclear) | Jun. 06, 2013 Southern California Edison San Onofre (nuclear) | Dec. 31, 2013 Southern California Edison San Onofre (nuclear) | May 31, 2013 Southern California Edison San Onofre (nuclear) | Jun. 30, 2014 Southern California Edison San Onofre (nuclear) Replacement Steam Generators | Dec. 31, 2012 Southern California Edison San Onofre (nuclear) Replacement Steam Generators | Feb. 01, 2012 Southern California Edison San Onofre (nuclear) Replacement Steam Generators | Dec. 31, 2013 Southern California Edison San Onofre (nuclear) Property, plant and equipment | Jun. 30, 2014 Southern California Edison San Onofre (nuclear) Refunds of excess revenue | Dec. 31, 2013 Southern California Edison San Onofre (nuclear) Refunds of excess revenue | Jun. 30, 2014 Southern California Edison San Onofre (nuclear) 2012 Period | Jun. 30, 2014 Southern California Edison San Onofre (nuclear) 2013-2014 Periods | Feb. 22, 2014 Southern California Edison San Onofre (nuclear) Insurance Claims [Member] | May 31, 2013 Southern California Edison San Onofre (nuclear) Disallowance Of SGRP Investment [Member] | Jun. 30, 2014 Southern California Edison San Onofre (nuclear) Refund of SGRP Revenue Previously Recognized [Member] | Jun. 30, 2014 Southern California Edison San Onofre (nuclear) Refund Of Flow Through Tax Benefits [Member] | Jun. 30, 2014 Mitsubishi Heavy Industries Ltd [Member] San Onofre (nuclear)
Regulatory Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Settlement Agreement Subject Termination Period |  |  |  |  |  |  |  |  |  |  |  | 6 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decommissioning Nuclear Facilities Net Investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 597 |  |  |  |  |  |  |  |  |  |
Incremental Inspection and Repair Costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 99 |  |  |  |  |  |  |  |  |  |  |
Period For Rate Recovery |  |  |  |  |  |  |  |  |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Authorized expenditures by authoritative body, market costs incurred |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 680 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Authorized Return on Preferred Equity Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Approved Return on Equity, Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.95% | 2.62% |  |  |  |  |
Public Utilities, Approved Incentive, Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of assets reclassified to a regulatory asset |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,521 |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment and other charges | 0 | 575 | 231 | 575 |  |  |  | 0 | 575 | 231 | 575 |  |  | 231 | 575 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment and other charges net of tax |  |  |  |  |  |  |  |  |  |  |  |  |  | 96 |  |  | 365 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative Impact of Settlement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 806 |  |  |  |  |  |  |  |  |  |  |  |  |  | 542 | 159 | 71 |
Cumulative Impact of Settlement, Net of Tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 461 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net regulatory asset |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,370) |  |  | (1,300) |  |  |  |  | (1,560) | 483 | 266 |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  | 300 |  | 300 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Insurance Claims, Estimated Amount |  |  |  |  |  | 414.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 325.0 |  |  |  |
Reduction in Policy Benefits Following Retirement of Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 90.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warranty Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20 years |  |  |  |  |  |  |  |  |  |  |  |
Maximum Liability Per Purchase Agreement for Damages |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 138
Notice of intent to sue, notice time period |  |  |  |  | 90 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value |  |  |  |  |  |  | 98 |  |  |  |  |  |  |  |  | 4,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency Counter Claim Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 41

X
- Definition Asset impairment and other charges + References No definition available. + Details
Name: | eix_AssetImpairmentAndOtherCharges
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Asset impairment net of tax + References No definition available. + Details
Name: | eix_Assetimpairmentnetoftax
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Authorized expenditures by authoritative body, market costs incurred + References No definition available. + Details
Name: | eix_AuthorizedExpendituresByAuthoritativeBodyMarketCostsIncurred
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Authorized Return on Preferred Equity Percentage + References No definition available. + Details
Name: | eix_AuthorizedReturnonPreferredEquityPercentage
Namespace Prefix: | eix_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cumulative Impact of Settlement + References No definition available. + Details
Name: | eix_CumulativeImpactofSettlement
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Cumulative Impact of Settlement, Net of Tax + References No definition available. + Details
Name: | eix_CumulativeImpactofSettlementNetofTax
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Decommissioning Nuclear Facilities Net Investment + References No definition available. + Details
Name: | eix_DecommissioningNuclearFacilitiesNetInvestment
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Decrease in Regulatory Capital Requirements, Common Equity Requirement + References No definition available. + Details
Name: | eix_DecreaseinRegulatoryCapitalRequirementsCommonEquityRequirement
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Incremental Inspection and Repair Costs + References No definition available. + Details
Name: | eix_IncrementalInspectionandRepairCosts
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Loss Contingency Counter Claim Amount + References No definition available. + Details
Name: | eix_LossContingencyCounterClaimAmount
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The maximum aggregate potential liability under the purchase agreement for damages and other amounts in connection with environmental liabilities. + References No definition available. + Details
Name: | eix_MaximumLiabilityPerPurchaseAgreementForDamages
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Notice of intent to sue, notice time period + References No definition available. + Details
Name: | eix_NoticeOfIntentToSueNoticeTimePeriod
Namespace Prefix: | eix_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period For Rate Recovery + References No definition available. + Details
Name: | eix_PeriodForRateRecovery
Namespace Prefix: | eix_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Incentive that allows to retain 5% of sales proceeds and recover 5% of excess of cancelled contract obligations over cancellation costs. + References No definition available. + Details
Name: | eix_PublicUtilitiesApprovedIncentivePercentage
Namespace Prefix: | eix_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reclassification To Regulatory Assets Amount + References No definition available. + Details
Name: | eix_ReclassificationToRegulatoryAssetsAmount
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reduction in Policy Benefits Following Retirement of Assets + References No definition available. + Details
Name: | eix_ReductioninPolicyBenefitsFollowingRetirementofAssets
Namespace Prefix: | eix_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Settlement Agreement Subject Termination Period + References No definition available. + Details
Name: | eix_SettlementAgreementSubjectTerminationPeriod
Namespace Prefix: | eix_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Warranty Period + References No definition available. + Details
Name: | eix_WarrantyPeriod
Namespace Prefix: | eix_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The value (monetary amount) of the award the plaintiff seeks in the legal matter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
Name: | us-gaap_LossContingencyDamagesSoughtValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
Name: | us-gaap_LossContingencyEstimateOfPossibleLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The net amount of all regulatory assets less all regulatory liabilities as of the end of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
Name: | us-gaap_NetRegulatoryAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of public utility's approved return on equity. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RegulatoryAssetLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration