Rate and Regulatory Matters (Details Textuals) (USD $)	1 Months Ended	3 Months Ended	6 Months Ended
	Jan. 31, 2011	Mar. 31, 2011	Jun. 30, 2011
Rate and Regulatory Matters (Textuals) [Abstract]
Amount related to a realignment to and recovery through base rates of certain fuel costs			$ 2,000,000
Entergy Gulf States Louisiana [Member]
Rate and Regulatory Matters (Textuals) [Abstract]
Disallowance costs recommended			23,000,000
Total disallowance costs including interest			43,000,000
Refund for fuel cost recovery			18,000,000
Earned return on common equity	8.84%
Revenue deficiency	300,000
Rate plan to reflect adjustments			5,100,000
Earned return on common equity adjusted		11.76%	11.11%
Reduction in rate		200,000	22,800,000
Entergy Texas [Member]
Rate and Regulatory Matters (Textuals) [Abstract]
Refund for fuel cost recovery			73,000,000
Entergy Mississippi [Member]
Rate and Regulatory Matters (Textuals) [Abstract]
Earned return on common equity adjusted			10.65%
Entergy Louisiana, LLC [Member]
Rate and Regulatory Matters (Textuals) [Abstract]
Amount to be Recovered from proposed settlement		200,000,000
Rate plan to reflect adjustments			43,100,000
Earned return on common equity adjusted			11.07%
Reduction in rate			9,000
Effect of rate change on revenues			9,000,000
Entergy New Orleans
Rate and Regulatory Matters (Textuals) [Abstract]
Increase in annual funding for storm reserve			3,700,000
Decrease in electric base revenue			6,500,000
Increase in gas base rate.			$ 1,100,000