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equalization.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6falsefalsefalse00falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalse17falsefalsefalse00falsefalsefalsetruefalse18falsefalsefalse00falsefalsefalsetruefalse19falsefalsefalse00falsefalsefalsetruefalse20falsefalsefalse00falsefalsefalsetruefalse21falsefalsefalse00falsefalsefalsetruefalse22falsefalsefalse00falsefalsefalsetruefalse23falsefalsefalse00falsefalsefalsetruefalse24falsefalsefalse00falsefalsefalsetruefalse25falsefalsefalse00falsefalsefalsetruefalse26falsefalsefalse00falsefalsefalsetruefalse27falsefalsefalse00falsefalsefalsetruefalse28falsefalsefalse00falsefalsefalsetruefalse29falsefalsefalse00falsefalsefalsetruefalse30falsefalsefalse00falsefalsefalsetruefalse31falsefalsefalse00falsefalsefalsetruefalse32falsefalsefalse00falsefalsefalsetruefalse33falsefalsefalse00falsefalsefalsetruefalse34falsefalsefalse00falsefalsefalsetruefalse35falsefalsefalse00falsefalsefalsetruefalse36falsefalsefalse00falsefalsefalsetruefalse37falsefalsefalse00falsefalsefalsetruefalse38falsefalsefalse00falsefalsefalsetruefalse39falsefalsefalse00falsefalsefalsetruefalse40falsefalsefalse00falsefalsefalsetruefalse41falsefalsefalse00falsefalsefalsetruefalse42falsefalsefalse00falsefalsefalsetruefalse43falsefalsefalse00falsefalsefalsetruefalse44falsefalsefalse00falsefalsefalsetruefalse45falsefalsefalse00falsefalsefalsetruefalse46falsefalsefalse00falsefalsefalsetruefalse47falsefalsefalse00falsefalsefalsetruefalse48falsefalsefalse00falsefalsefalsetruefalse49falsefalsefalse00falsefalsefalsetruefalse50falsefalsefalse00falsefalsefalsetruefalse51falsefalsefalse00falsefalsefalsetruefalse52falsefalsefalse00falsefalsefalsetruefalse53falsefalsefalse00falsefalsefalsetruefalse54falsefalsefalse00falsefalsefalsetruefalse55falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:stringItemTypestringPayments/receipts among the Utility operating companies to achieve rough production cost equalization.falsefalsePayments/receipts among the Utility operating companies to achieve rough production cost equalization10false0etr_PaymentsBasedOnPreviousYearProductionCostsetrfalsecreditdurationPayments based on previous year production costs.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse4100000041000falsefalsefalsetruefalse4truefalsefalse390000000390000falsefalsefalsetruefalse5truefalsefalse252000000252000falsefalsefalsetruefalse6truefalsefalse252000000252000falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalse17falsefalsefalse00falsefalsefalsetruefalse18falsefalsefalse00falsefalsefalsetruefalse19falsefalsefalse00falsefalsefalsetruefalse20falsefalsefalse00falsefalsefalsetruefalse21falsefalsefalse00falsefalsefalsetruefalse22falsefalsefalse00falsefalsefalsetruefalse23falsefalsefalse00falsefalsefalsetruefalse24falsefalsefalse00falsefalsefalsetruefalse25falsefalsefalse00falsefalsefalsetruefalse26falsefalsefalse00falsefalsefalsetruefalse27falsefalsefalse00falsefalsefalsetruefalse28falsefalsefalse00falsefalsefalsetruefalse29falsefalsefalse00falsefalsefalsetruefalse30falsefalsefalse00falsefalsefalsetruefalse31falsefalsefalse00falsefalsefalsetruefalse32falsefalsefalse00falsefalsefalsetruefalse33falsefalsefalse00falsefalsefalsetruefalse34falsefalsefalse00falsefalsefalsetruefalse35falsefalsefalse00falsefalsefalsetruefalse36falsefalsefalse00falsefalsefalsetruefalse37falsefalsefalse00falsefalsefalsetruefalse38falsefalsefalse00falsefalsefalsetruefalse39falsefalsefalse00falsefalsefalsetruefalse40falsefalsefalse00falsefalsefalsetruefalse41falsefalsefalse00falsefalsefalsetruefalse42falsefalsefalse00falsefalsefalsetruefalse43falsefalsefalse00falsefalsefalsetruefalse44falsefalsefalse00falsefalsefalsetruefalse45falsefalsefalse00falsefalsefalsetruefalse46falsefalsefalse00falsefalsefalsetruefalse47falsefalsefalse00falsefalsefalsetruefalse48falsefalsefalse00falsefalsefalsetruefalse49falsefalsefalse00falsefalsefalsetruefalse50falsefalsefalse00falsefalsefalsetruefalse51falsefalsefalse00falsefalsefalsetruefalse52falsefalsefalse00falsefalsefalsetruefalse53falsefalsefalse00falsefalsefalsetruefalse54falsefalsefalse00falsefalsefalsetruefalse55falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryPayments based on previous year production costs.No authoritative reference available.falsefalsePayments based on previous year production costs11false0etr_ReceiptsBasedOnPreviousYearProductionCostsetrfalsedebitdurationReceipts based on previous year production costs.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6falsefalsefalse00falsefalsefalsetruefalse7truefalsefalse-107000000-107000falsetruefalsetruefalse8truefalsefalse-124000000-124000falsetruefalsetruefalse9truefalsefalse-120000000-120000falsetruefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11truefalsefalse-22000000-22000falsetruefalsetruefalse12truefalsefalse-140000000-140000falsetruefalsetruefalse13truefalsefalse-36000000-36000falsetruefalsetruefalse14truefalsefalse-91000000-91000falsetruefalsetruefalse15truefalsefalse-7000000-7000falsetruefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalse17falsefalsefalse00falsefalsefalsetruefalse18truefalsefalse-119000000-119000falsetruefalsetruefalse19truefalsefalse-65000000-65000falsetruefalsetruefalse20truefalsefalse-30000000-30000falsetruefalsetruefalse21falsefalsefalse00falsefalsefalsetruefalse22truefalsefalse-19000000-19000falsetruefalsetruefalse23truefalsefalse-24000000-24000falsetruefalsetruefalse24truefalsefalse-20000000-20000falsetruefalsetruefalse25truefalsefalse-41000000-41000falsetruefalsetruefalse26falsefalsefalse00falsefalsefalsetruefalse27falsefalsefalse00falsefalsefalsetruefalse28falsefalsefalse00falsefalsefalsetruefalse29falsefalsefalse00falsefalsefalsetruefalse30falsefalsefalse00falsefalsefalsetruefalse31falsefalsefalse00falsefalsefalsetruefalse32falsefalsefalse00falsefalsefalsetruefalse33falsefalsefalse00falsefalsefalsetruefalse34falsefalsefalse00falsefalsefalsetruefalse35falsefalsefalse00falsefalsefalsetruefalse36falsefalsefalse00falsefalsefalsetruefalse37falsefalsefalse00falsefalsefalsetruefalse38falsefalsefalse00falsefalsefalsetruefalse39falsefalsefalse00falsefalsefalsetruefalse40falsefalsefalse00falsefalsefalsetruefalse41falsefalsefalse00falsefalsefalsetruefalse42falsefalsefalse00falsefalsefalsetruefalse43falsefalsefalse00falsefalsefalsetruefalse44falsefalsefalse00falsefalsefalsetruefalse45falsefalsefalse00falsefalsefalsetruefalse46falsefalsefalse00falsefalsefalsetruefalse47falsefalsefalse00falsefalsefalsetruefalse48falsefalsefalse00falsefalsefalsetruefalse49falsefalsefalse00falsefalsefalsetruefalse50falsefalsefalse00falsefalsefalsetruefalse51falsefalsefalse00falsefalsefalsetruefalse52falsefalsefalse00falsefalsefalsetruefalse53falsefalsefalse00falsefalsefalsetruefalse54falsefalsefalse00falsefalsefalsetruefalse55falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryReceipts based on previous year production costs.No authoritative reference available.falsefalseReceipts based on previous year production costs5510Rate and Regulatory Matters (Details) (USD $)ThousandsUnKnownUnKnownUnKnownfalsetrue