2.2.0.25truefalse06035 - Disclosure - Income Taxes (Details 5)truefalseIn Thousandsfalse1falsefalseUSDfalsefalse12/31/2010 USD ($) $BalanceAsOf_31Dec2010http://www.sec.gov/CIK0000065984instant2010-12-31T00:00:000001-01-01T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2falsefalseUSDfalsefalse12/31/2009 USD ($) $BalanceAsOf_31Dec2009http://www.sec.gov/CIK0000065984instant2009-12-31T00:00:000001-01-01T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2true0us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseNew Accounting Pronouncements and Changes in Accounting Principles [Abstract]3false0us-gaap_DeferredTaxAssetsNetCurrentus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse84720008472falsetruefalsefalsefalse2truefalsefalse00falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe current portion of the aggregate tax effects as of the balance sheet date of all future tax deductions arising from temporary differences between tax basis and generally accepted accounting principles basis recognition of assets, liabilities, revenues and expenses, which can only be deducted for tax purposes when permitted under enacted tax laws; after deducting the allocated valuation allowance, if any, to reduce such amount to net realizable value. Deferred tax liabilities and assets shall be classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. A deferred tax liability or asset that is not related to an asset or liability for financial reporting, including deferred tax assets related to carryforwards, shall be classified according to the expected reversal date of the temporary difference. An unrecognized tax benefit that is directly related to a position taken in a tax year that results in a net operating loss carryforward should be presented as a reduction of the related deferred tax asset.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 41, 42, 43 falsefalseAccumulated deffered income taxes and taxes accrued4false0etr_SfasRegulatoryAssetNetetrfalsedebitinstantSfas Regulatory Asset Netfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse845725000845725falsefalsefalsefalsefalse2truefalsefalse816856000816856falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySfas Regulatory Asset NetNo authoritative reference available.falsefalseRegulatory asset for income taxes - net5false0us-gaap_RegulatoryLiabilityNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse539026000539026falsefalsefalsefalsefalse2truefalsefalse378862000378862falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 71 -Paragraph 11 falsefalseOther regulatory liabilities6false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://entergy.com/role/incometaxesdetails51falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalseUSDtruefalse{us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis} : Restatement Adjustment [Member] 12/31/2009 USD ($) $BalanceAsOf_31Dec2009_Restatement_Adjustment_Memberhttp://www.sec.gov/CIK0000065984instant2009-12-31T00:00:000001-01-01T00:00:00falsefalseRestatement Adjustment [Member]us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_RestatementAdjustmentMemberus-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseRestatement Adjustment [Member]7true0us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseNew Accounting Pronouncements and Changes in Accounting Principles [Abstract]8false0us-gaap_DeferredTaxAssetsNetCurrentus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse240000000240000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe current portion of the aggregate tax effects as of the balance sheet date of all future tax deductions arising from temporary differences between tax basis and generally accepted accounting principles basis recognition of assets, liabilities, revenues and expenses, which can only be deducted for tax purposes when permitted under enacted tax laws; after deducting the allocated valuation allowance, if any, to reduce such amount to net realizable value. Deferred tax liabilities and assets shall be classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. A deferred tax liability or asset that is not related to an asset or liability for financial reporting, including deferred tax assets related to carryforwards, shall be classified according to the expected reversal date of the temporary difference. An unrecognized tax benefit that is directly related to a position taken in a tax year that results in a net operating loss carryforward should be presented as a reduction of the related deferred tax asset.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 41, 42, 43 falsefalseAccumulated deffered income taxes and taxes accrued9false0etr_SfasRegulatoryAssetNetetrfalsedebitinstantSfas Regulatory Asset Netfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse197000000197000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySfas Regulatory Asset NetNo authoritative reference available.falsefalseRegulatory asset for income taxes - net10false0etr_RegulatoryLiabilityForIncomeTaxesetrfalsecreditinstantRegulatory liability for income taxes.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryRegulatory liability for income taxes.No authoritative reference available.falsefalseRegulatory liability for income taxes11false0us-gaap_RegulatoryLiabilityNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse-43000000-43000falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 71 -Paragraph 11 falsefalseOther regulatory liabilities210Income Taxes (Details 5) (USD $)ThousandsUnKnownUnKnownUnKnownfalsetrue