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reference available.falsefalseFacility fee percentage of commitment amount20false0etr_WeightedAverageInterestRateetrfalsenadurationWeighted average interest rate.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse0.007520.00752falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9falsetruefalse00falsefalsefalsetruefalse10falsetruefalse00falsefalsefalsetruefalse11falsetruefalse00falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15falsetruefalse00falsefalsefalsetruefalse16falsetruefalse00falsefalsefalsetruefalse17falsetruefalse00falsefalsefalsetruefalseOtherus-types:percentItemTypepureWeighted average interest rate.No authoritative reference available.falsefalseWeighted average interest rate21false0etr_ConsolidatedDebtRatioOfCapitalizationetrfalsenadurationConsolidated debt ratio of capitalization.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse0070% or less70% or 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available.falsefalseCommitment fee percentage of commitment amount23false0etr_GeneratingUnitsetrfalsenadurationGenerating units.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse580580falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6falsefalsefalse00falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalse17falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:integerItemTypeintegerGenerating units.No authoritative reference available.falsefalseGenerating units1In April 2011, Entergy Arkansas renewed its credit facility through April 2012 in the amount of $XX million. The credit facility requires Entergy Arkansas to maintain a debt ratio of 65% or less of its total capitalization.Borrowings under the Entergy Arkansas credit facility may be secured by a security interest in its accounts receivable.2The credit facility allows Entergy Gulf States Louisiana to issue letters of credit against the borrowing capacity of the facility. As of March 31, 2011, no letters of credit were outstanding. The credit facility requires Entergy Gulf States Louisiana to maintain a consolidated debt ratio of 65% or less of its total capitalization. Pursuant to the terms of the credit agreement, the amount of debt assumed by Entergy Texas ($0 as of December 31, 2010 and $168 million as of December 31, 2009) is excluded from debt and capitalization in calculating the debt ratio.3The credit facility allows Entergy Louisiana to issue letters of credit against the borrowing capacity of the facility. As of March 31, 2011, no letters of credit were outstanding. The credit facility requires Entergy Louisiana to maintain a consolidated debt ratio of 65% or less of its total capitalization.4The credit facility allows Entergy Texas to issue letters of credit against the borrowing capacity of the facility. As of March 31, 2011, no letters of credit were outstanding. The credit facility requires Entergy Texas to maintain a consolidated debt ratio of 65% or less of its total capitalization. Pursuant to the terms of the credit agreement securitization bonds are excluded from debt and capitalization in calculating the debt ratio.1722Revolving Credit Facilities, Lines of Credit and Short Term Borrowings and Long Term Debt (Details Textuals) (USD $)NoRoundingUnKnownUnKnownUnKnowntruetrue