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Quarterly Financial Data (Unaudited) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended | 6 Months Ended
--- | --- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Jun. 30, 2013
Quarterly Financial Data [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total operating revenue | $ 3,114 us-gaap_Revenues |  | $ 4,356 us-gaap_Revenues |  | $ 3,016 us-gaap_Revenues |  | $ 2,926 us-gaap_Revenues |  | $ 2,943 us-gaap_Revenues |  | $ 3,960 us-gaap_Revenues |  | $ 3,046 us-gaap_Revenues |  | $ 2,632 us-gaap_Revenues |  | $ 13,413 us-gaap_Revenues |  | $ 12,581 us-gaap_Revenues |  | $ 11,862 us-gaap_Revenues |
Operating income (loss) | 693 us-gaap_OperatingIncomeLoss |  | 874 us-gaap_OperatingIncomeLoss |  | 575 us-gaap_OperatingIncomeLoss |  | 331 us-gaap_OperatingIncomeLoss |  | 505 us-gaap_OperatingIncomeLoss |  | 789 us-gaap_OperatingIncomeLoss |  | (71)us-gaap_OperatingIncomeLoss |  | 492 us-gaap_OperatingIncomeLoss |  | 2,472 us-gaap_OperatingIncomeLoss |  | 1,715 us-gaap_OperatingIncomeLoss |  | 2,285 us-gaap_OperatingIncomeLoss |
Income from continuing operations | 406 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | [1] | 524 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | [1] | 382 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | [1] | 224 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | [1] | 289 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | [2] | 488 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | [2] | (82)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | [2] | 286 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | [2] | 1,536 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | [1] | 979 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | [2] | 1,594 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest |
Income (loss) from discontinued operations, net | 39 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |  | (16)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |  | 184 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |  | (22)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |  | 37 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |  | (25)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |  | 12 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |  | 12 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |  | 185 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |  | 36 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |  | (1,686)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |
Net income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,721 us-gaap_ProfitLoss |  | 1,015 us-gaap_ProfitLoss |  | (92)us-gaap_ProfitLoss |
Net income (loss) attributable to common shareholders | 420 us-gaap_NetIncomeLoss |  | 480 us-gaap_NetIncomeLoss |  | 536 us-gaap_NetIncomeLoss |  | 176 us-gaap_NetIncomeLoss |  | 301 us-gaap_NetIncomeLoss |  | 438 us-gaap_NetIncomeLoss |  | (94)us-gaap_NetIncomeLoss |  | 271 us-gaap_NetIncomeLoss |  | 1,612 us-gaap_NetIncomeLoss |  | 915 us-gaap_NetIncomeLoss |  | (183)us-gaap_NetIncomeLoss |
Basic earnings (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic earnings (loss) per share – continuing operations (in dollars per share) | $ 1.17 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare |  | $ 1.52 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare |  | $ 1.08 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare |  | $ 0.61 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare |  | $ 0.81 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare |  | $ 1.42 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare |  | $ (0.33)us-gaap_IncomeLossFromContinuingOperationsPerBasicShare |  | $ 0.79 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare |  | $ 4.38 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare |  | $ 2.70 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare |  | $ 4.61 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare |
Basic earnings (loss) per share – discontinued operations (in dollars per share) | $ 0.12 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare |  | $ (0.05)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare |  | $ 0.56 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare |  | $ (0.07)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare |  | $ 0.11 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare |  | $ (0.08)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare |  | $ 0.04 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare |  | $ 0.04 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare |  | $ 0.57 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare |  | $ 0.11 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare |  | $ (5.17)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare |
Total (in dollars per share) | $ 1.29 us-gaap_EarningsPerShareBasic |  | $ 1.47 us-gaap_EarningsPerShareBasic |  | $ 1.64 us-gaap_EarningsPerShareBasic |  | $ 0.54 us-gaap_EarningsPerShareBasic |  | $ 0.92 us-gaap_EarningsPerShareBasic |  | $ 1.34 us-gaap_EarningsPerShareBasic |  | $ (0.29)us-gaap_EarningsPerShareBasic |  | $ 0.83 us-gaap_EarningsPerShareBasic |  | $ 4.95 us-gaap_EarningsPerShareBasic |  | $ 2.81 us-gaap_EarningsPerShareBasic |  | $ (0.56)us-gaap_EarningsPerShareBasic |
Diluted earnings (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Diluted earnings (loss) per share – continuing operations (in dollars per share) | $ 1.15 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare |  | $ 1.51 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare |  | $ 1.07 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare |  | $ 0.61 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare |  | $ 0.81 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare |  | $ 1.41 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare |  | $ (0.33)us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare |  | $ 0.78 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare |  | $ 4.33 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare |  | $ 2.67 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare |  | $ 4.55 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare |
Diluted earnings (loss) per share – discontinued operations (in dollars per share) | $ 0.12 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare |  | $ (0.05)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare |  | $ 0.56 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare |  | $ (0.07)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare |  | $ 0.11 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare |  | $ (0.07)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare |  | $ 0.04 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare |  | $ 0.04 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare |  | $ 0.56 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare |  | $ 0.11 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare |  | $ (5.11)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare |
Total (in dollars per share) | $ 1.27 us-gaap_EarningsPerShareDiluted |  | $ 1.46 us-gaap_EarningsPerShareDiluted |  | $ 1.63 us-gaap_EarningsPerShareDiluted |  | $ 0.54 us-gaap_EarningsPerShareDiluted |  | $ 0.92 us-gaap_EarningsPerShareDiluted |  | $ 1.34 us-gaap_EarningsPerShareDiluted |  | $ (0.29)us-gaap_EarningsPerShareDiluted |  | $ 0.82 us-gaap_EarningsPerShareDiluted |  | $ 4.89 us-gaap_EarningsPerShareDiluted |  | $ 2.78 us-gaap_EarningsPerShareDiluted |  | $ (0.56)us-gaap_EarningsPerShareDiluted |
Dividends declared per share (in dollars per share) | $ 0.4175 us-gaap_CommonStockDividendsPerShareDeclared |  | $ 0.3550 us-gaap_CommonStockDividendsPerShareDeclared |  | $ 0.3550 us-gaap_CommonStockDividendsPerShareDeclared |  | $ 0.3550 us-gaap_CommonStockDividendsPerShareDeclared |  | $ 0.3550 us-gaap_CommonStockDividendsPerShareDeclared |  | $ 0.3375 us-gaap_CommonStockDividendsPerShareDeclared |  | $ 0.3375 us-gaap_CommonStockDividendsPerShareDeclared |  | $ 0.3375 us-gaap_CommonStockDividendsPerShareDeclared |  | $ 1.4825 us-gaap_CommonStockDividendsPerShareDeclared |  | $ 1.3675 us-gaap_CommonStockDividendsPerShareDeclared |  | $ 1.3125 us-gaap_CommonStockDividendsPerShareDeclared |
Common stock prices: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
High ($ per share) | $ 68.74 eix_CommonStockMarketPriceHighEndOfRange |  | $ 59.54 eix_CommonStockMarketPriceHighEndOfRange |  | $ 58.24 eix_CommonStockMarketPriceHighEndOfRange |  | $ 56.61 eix_CommonStockMarketPriceHighEndOfRange |  | $ 49.95 eix_CommonStockMarketPriceHighEndOfRange |  | $ 50.34 eix_CommonStockMarketPriceHighEndOfRange |  | $ 54.19 eix_CommonStockMarketPriceHighEndOfRange |  | $ 51.24 eix_CommonStockMarketPriceHighEndOfRange |  | $ 68.74 eix_CommonStockMarketPriceHighEndOfRange |  | $ 54.19 eix_CommonStockMarketPriceHighEndOfRange |  |  |
Low ($ per share) | $ 55.88 eix_CommonStockMarketPriceLowEndOfRange |  | $ 54.12 eix_CommonStockMarketPriceLowEndOfRange |  | $ 53.63 eix_CommonStockMarketPriceLowEndOfRange |  | $ 44.74 eix_CommonStockMarketPriceLowEndOfRange |  | $ 44.97 eix_CommonStockMarketPriceLowEndOfRange |  | $ 44.26 eix_CommonStockMarketPriceLowEndOfRange |  | $ 44.86 eix_CommonStockMarketPriceLowEndOfRange |  | $ 44.92 eix_CommonStockMarketPriceLowEndOfRange |  | $ 44.74 eix_CommonStockMarketPriceLowEndOfRange |  | $ 44.26 eix_CommonStockMarketPriceLowEndOfRange |  |  |
Close ($ per share) | $ 65.48 us-gaap_SharePrice |  | $ 55.92 us-gaap_SharePrice |  | $ 58.11 us-gaap_SharePrice |  | $ 56.61 us-gaap_SharePrice |  | $ 46.30 us-gaap_SharePrice |  | $ 46.06 us-gaap_SharePrice |  | $ 48.16 us-gaap_SharePrice |  | $ 50.32 us-gaap_SharePrice |  | $ 65.48 us-gaap_SharePrice |  | $ 46.30 us-gaap_SharePrice |  |  | $ 48.16 us-gaap_SharePrice
Southern California Edison |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly Financial Data [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total operating revenue | 3,104 us-gaap_Revenues / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 4,338 us-gaap_Revenues / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 3,014 us-gaap_Revenues / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 2,924 us-gaap_Revenues / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 2,931 us-gaap_Revenues / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 3,957 us-gaap_Revenues / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 3,045 us-gaap_Revenues / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 2,629 us-gaap_Revenues / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 13,380 us-gaap_Revenues / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 12,562 us-gaap_Revenues / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 11,851 us-gaap_Revenues / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |
Operating income (loss) | 715 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 881 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 593 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 342 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 505 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 804 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | (55)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 498 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 2,529 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 1,751 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 2,279 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |
Net income (loss) | 408 us-gaap_ProfitLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | [3] | 531 us-gaap_ProfitLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | [3] | 392 us-gaap_ProfitLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | [3] | 234 us-gaap_ProfitLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | [3] | 283 us-gaap_ProfitLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | [4] | 502 us-gaap_ProfitLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | [4] | (67)us-gaap_ProfitLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | [4] | 283 us-gaap_ProfitLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | [4] | 1,565 us-gaap_ProfitLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | [3] | 1,000 us-gaap_ProfitLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | [4] | 1,660 us-gaap_ProfitLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |
Net income (loss) attributable to common shareholders | 380 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 503 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 362 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 208 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 258 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 477 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | (91)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 256 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 1,453 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 900 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 1,569 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |
Common stock prices: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common dividends declared | 147 us-gaap_DividendsCommonStock / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 126 us-gaap_DividendsCommonStock / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 126 us-gaap_DividendsCommonStock / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 126 us-gaap_DividendsCommonStock / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 126 us-gaap_DividendsCommonStock / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 120 us-gaap_DividendsCommonStock / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 120 us-gaap_DividendsCommonStock / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 120 us-gaap_DividendsCommonStock / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 525 us-gaap_DividendsCommonStock / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  | 486 us-gaap_DividendsCommonStock / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  |  |
San Onofre | Southern California Edison |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock prices: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset impairment and other charges |  |  |  |  |  |  | 231 eix_AssetImpairmentAndOtherCharges / us-gaap_JointlyOwnedUtilityPlantAxis = eix_SanOnofreMember / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  |  |  |  |  | 575 eix_AssetImpairmentAndOtherCharges / us-gaap_JointlyOwnedUtilityPlantAxis = eix_SanOnofreMember / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  |  |  | 163 eix_AssetImpairmentAndOtherCharges / us-gaap_JointlyOwnedUtilityPlantAxis = eix_SanOnofreMember / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  |  |  |  | 575 eix_AssetImpairmentAndOtherCharges / us-gaap_JointlyOwnedUtilityPlantAxis = eix_SanOnofreMember / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember
Asset impairment net of tax |  |  |  |  |  |  | 96 eix_Assetimpairmentnetoftax / us-gaap_JointlyOwnedUtilityPlantAxis = eix_SanOnofreMember / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  |  |  |  |  | 365 eix_Assetimpairmentnetoftax / us-gaap_JointlyOwnedUtilityPlantAxis = eix_SanOnofreMember / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  |  |  | 72 eix_Assetimpairmentnetoftax / us-gaap_JointlyOwnedUtilityPlantAxis = eix_SanOnofreMember / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  |  |  |  | 365 eix_Assetimpairmentnetoftax / us-gaap_JointlyOwnedUtilityPlantAxis = eix_SanOnofreMember / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember
Asset Impairment and Other Charges, Impact of Revision of Estimate | 68 eix_AssetImpairmentandOtherChargesImpactofRevisionofEstimate / us-gaap_JointlyOwnedUtilityPlantAxis = eix_SanOnofreMember / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Impairment and Other Charges, Net of Tax, Impact of Revision of Estimate | $ 24 eix_AssetImpairmentandOtherChargesNetofTaxImpactofRevisionofEstimate / us-gaap_JointlyOwnedUtilityPlantAxis = eix_SanOnofreMember / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | SCE recorded an impairment charge of $231 million ($96 million after-tax) in 2014. During the fourth quarter of 2014, SCE reduced its estimated impact of the San Onofre OII Settlement by $68 million ($24 million after-tax) consistent with the advice filing for reimbursement of recorded costs. 2013(in millions, except per-share amounts)Total Fourth Third Second FirstOperating revenue$12,581 $2,943 $3,960 $3,046 $2,632Operating income (loss)1,715 505 789 (71) 492Income (loss) from continuing operations1979 289 488 (82) 286Income (loss) from discontinued operations, net36 37 (25) 12 12Net income (loss) attributable to common shareholders915 301 438 (94) 271Basic earnings (loss) per share: Continuing operations2.70 0.81 1.42 (0.33) 0.79 Discontinued operations0.11 0.11 (0.08) 0.04 0.04Total2.81 0.92 1.34 (0.29) 0.83Diluted earnings (loss) per share: Continuing operations2.67 0.81 1.41 (0.33) 0.78 Discontinued operations0.11 0.11 (0.07) 0.04 0.04Total2.78 0.92 1.34 (0.29) 0.82Dividends declared per share1.3675 0.3550 0.3375 0.3375 0.3375Common stock prices: High54.19 49.95 50.34 54.19 51.24Low44.26 44.97 44.26 44.86 44.92Close46.30 46.30 46.06 48.16 50.32
[2] | During the second quarter of 2013, SCE recorded an impairment charge of $575 million ($365 million after-tax) related to the permanent retirement of San Onofre Units 2 and 3.
[3] | In the first quarter of 2014, SCE recorded an impairment charge of $231 million ($96 million after-tax) in 2014. During the fourth quarter of 2014, SCE reduced its estimated impact of the San Onofre OII Settlement by $68 million ($24 million after-tax) consistent with the advice filing for reimbursement of recorded costs.
[4] | During the second quarter of 2013, SCE recorded an impairment charge of $575 million ($365 million after-tax) related to the permanent retirement of San Onofre Units 2 and 3

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