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Preferred Equity (Schedule Of Number Of Shares And Units Authorized And Outstanding And Dollar Value Of Preferred Stock) (Details)
$ / shares in Units, $ in Thousands
 1 Months Ended 12 Months Ended
Oct. 31, 2015
Dec. 31, 2013
Dec. 31, 2015
USD ($)
$ / shares
$ / unit
shares
Dec. 31, 2014
USD ($)
shares
Preferred Stock, Shares Authorized     5,375,105 6,365,105
Preferred Stock, Shares Outstanding     5,375,105 6,205,105
Preferred Stock, Value | $     $ 318,185 $ 304,760
Preferred Units, Value | $     $ 0 $ 94,000
Preferred Shares/Units, Authorized     5,125,105 6,115,105
Preferred Shares/Units, Outstanding     5,125,105 5,955,105
Preferred Shares/Units, Value | $     $ 293,936 $ 280,511
Entergy Arkansas [Member]        
Preferred Stock, Shares Outstanding     3,413,500 3,413,500
Preferred Stock, Value | $     $ 116,350 $ 116,350
Entergy Louisiana [Member]        
Preferred Units, Outstanding     0 1,100,000
Preferred Units, Value | $     $ 0 $ 110,000
Entergy Mississippi [Member]        
Preferred Stock, Shares Outstanding     1,403,807 1,403,807
Preferred Stock, Value | $     $ 50,381 $ 50,381
Entergy New Orleans [Member]        
Preferred Stock, Shares Outstanding     197,798 197,798
Preferred Stock, Value | $     $ 19,780 $ 19,780
Preferred Membership Interests Cumulative One Hundred Dollar Liquidation Value Six Point Nine Five Percent Series [Member] | Entergy Louisiana [Member]        
Preferred Units, Outstanding     0 1,000,000
Preferred Units, Value | $     $ 0 $ 100,000
Preferred Units, Call Price per Share | $ / unit     0  
Preferred stock/preferred membership interests rate     6.95%  
Preferred Stock, Par or Stated Value Per Share | $ / shares     $ 100  
Preferred Stock, 4.32% - 6.45% Series [Member] | Entergy Arkansas [Member]        
Preferred Shares/Units, Authorized     3,413,500 3,413,500
Preferred Shares/Units, Outstanding     3,413,500 3,413,500
Preferred Shares/Units, Value | $     $ 116,350 $ 116,350
Preferred Membership Interests, Series A, 8.25% [Member] | Entergy Louisiana [Member]        
Preferred Shares/Units, Authorized     0 100,000
Preferred Shares/Units, Outstanding     0 100,000
Preferred Shares/Units, Value | $     $ 0 $ 10,000
Preferred stock/preferred membership interests rate     8.25%  
Preferred Membership Interests, 6.95% Series [Member] | Entergy Louisiana [Member]        
Preferred Shares/Units, Authorized [1]     0 1,000,000
Preferred Shares/Units, Outstanding [1]     0 840,000
Preferred Shares/Units, Value | $ [1]     $ 0 $ 84,000
Preferred stock/preferred membership interests rate [1]     6.95%  
Preferred Stock, 4.36% - 6.25% Series [Member] | Entergy Mississippi [Member]        
Preferred Shares/Units, Authorized     1,403,807 1,403,807
Preferred Shares/Units, Outstanding     1,403,807 1,403,807
Preferred Shares/Units, Value | $     $ 50,381 $ 50,381
Preferred Stock, 4.36% - 5.56% Series [Member] | Entergy New Orleans [Member]        
Preferred Shares/Units, Authorized     197,798 197,798
Preferred Shares/Units, Outstanding     197,798 197,798
Preferred Shares/Units, Value | $     $ 19,780 $ 19,780
Preferred Stock, 8.75% Rate [Member] | Entergy Finance Holding Inc [Member]        
Preferred Stock, Shares Authorized [2]     250,000 250,000
Preferred Stock, Shares Outstanding [2]     250,000 250,000
Preferred Stock, Value | $ [2]     $ 24,249 $ 24,249
Preferred stock/preferred membership interests rate   8.75% 8.75% [2]  
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs | $     $ 751  
Preferred Stock, Cumulative $100 Par Value, 4.32% Series [Member] | Entergy Arkansas [Member]        
Preferred Stock, Shares Outstanding     70,000 70,000
Preferred Stock, Value | $     $ 7,000 $ 7,000
Preferred Stock, Call Price per Share | $ / shares     $ 103.65  
Preferred stock/preferred membership interests rate     4.32%  
Preferred Stock, Par or Stated Value Per Share | $ / shares     $ 100  
Preferred Stock, Cumulative $100 Par Value, 4.72% Series [Member] | Entergy Arkansas [Member]        
Preferred Stock, Shares Outstanding     93,500 93,500
Preferred Stock, Value | $     $ 9,350 $ 9,350
Preferred Stock, Call Price per Share | $ / shares     $ 107.00  
Preferred stock/preferred membership interests rate     4.72%  
Preferred Stock, Par or Stated Value Per Share | $ / shares     $ 100  
Preferred Stock, Cumulative $100 Par Value, 4.36% Series [Member] | Entergy Mississippi [Member]        
Preferred Stock, Shares Outstanding     59,920 59,920
Preferred Stock, Value | $     $ 5,992 $ 5,992
Preferred Stock, Call Price per Share | $ / shares     $ 103.86  
Preferred stock/preferred membership interests rate     4.36%  
Preferred Stock, Par or Stated Value Per Share | $ / shares     $ 100  
Preferred Stock, Cumulative $100 Par Value, 4.36% Series [Member] | Entergy New Orleans [Member]        
Preferred Stock, Shares Outstanding     60,000 60,000
Preferred Stock, Value | $     $ 6,000 $ 6,000
Preferred Stock, Call Price per Share | $ / shares     $ 104.58  
Preferred stock/preferred membership interests rate     4.36%  
Preferred Stock, Par or Stated Value Per Share | $ / shares     $ 100  
Preferred Stock, Cumulative $100 Par Value, 4.56% Series [Member] | Entergy Arkansas [Member]        
Preferred Stock, Shares Outstanding     75,000 75,000
Preferred Stock, Value | $     $ 7,500 $ 7,500
Preferred Stock, Call Price per Share | $ / shares     $ 102.83  
Preferred stock/preferred membership interests rate     4.56%  
Preferred Stock, Par or Stated Value Per Share | $ / shares     $ 100  
Preferred Stock, Cumulative $100 Par Value, 4.56% Series [Member] | Entergy Mississippi [Member]        
Preferred Stock, Shares Outstanding     43,887 43,887
Preferred Stock, Value | $     $ 4,389 $ 4,389
Preferred Stock, Call Price per Share | $ / shares     $ 107.00  
Preferred stock/preferred membership interests rate     4.56%  
Preferred Stock, Cumulative $100 Par Value, 4.56% 1965 Series [Member] | Entergy Arkansas [Member]        
Preferred Stock, Shares Outstanding     75,000 75,000
Preferred Stock, Value | $     $ 7,500 $ 7,500
Preferred Stock, Call Price per Share | $ / shares     $ 102.50  
Preferred stock/preferred membership interests rate     4.56%  
Preferred Stock, Par or Stated Value Per Share | $ / shares     $ 100  
Preferred Stock, Cumulative $100 Par Value, 6.08% Series [Member] | Entergy Arkansas [Member]        
Preferred Stock, Shares Outstanding     100,000 100,000
Preferred Stock, Value | $     $ 10,000 $ 10,000
Preferred Stock, Call Price per Share | $ / shares     $ 102.83  
Preferred stock/preferred membership interests rate     6.08%  
Preferred Stock, Par or Stated Value Per Share | $ / shares     $ 100  
Preferred Stock, Cumulative $25 Par Value, 6.45% Series [Member] | Entergy Arkansas [Member]        
Preferred Stock, Shares Outstanding     3,000,000 3,000,000
Preferred Stock, Value | $     $ 75,000 $ 75,000
Preferred Stock, Call Price per Share | $ / shares     $ 25  
Preferred stock/preferred membership interests rate     6.45%  
Preferred Stock, Par or Stated Value Per Share | $ / shares     $ 25  
Preferred Membership Interests, Cumulative $100 Liquidation Value, 8.25% Series [Member] | Entergy Louisiana [Member]        
Preferred Units, Outstanding     0 100,000
Preferred Units, Value | $     $ 0 $ 10,000
Preferred Units, Call Price per Share | $ / unit     0  
Preferred stock/preferred membership interests rate     8.25%  
Preferred Stock, Par or Stated Value Per Share | $ / shares     $ 100  
Preferred Stock, Cumulative $100 Par Value, 4.92% Series [Member] | Entergy Mississippi [Member]        
Preferred Stock, Shares Outstanding     100,000 100,000
Preferred Stock, Value | $     $ 10,000 $ 10,000
Preferred Stock, Call Price per Share | $ / shares     $ 102.88  
Preferred stock/preferred membership interests rate     4.92%  
Preferred Stock, Cumulative $25 Par Value, 6.25% Series [Member] | Entergy Mississippi [Member]        
Preferred Stock, Shares Outstanding     1,200,000 1,200,000
Preferred Stock, Value | $     $ 30,000 $ 30,000
Preferred Stock, Call Price per Share | $ / shares     $ 25  
Preferred stock/preferred membership interests rate     6.25%  
Preferred Stock, Par or Stated Value Per Share | $ / shares     $ 25  
Preferred Stock, Cumulative $100 Par Value, 4.75% Series [Member] | Entergy New Orleans [Member]        
Preferred Stock, Shares Outstanding     77,798 77,798
Preferred Stock, Value | $     $ 7,780 $ 7,780
Preferred Stock, Call Price per Share | $ / shares     $ 105.00  
Preferred stock/preferred membership interests rate     4.75%  
Preferred Stock, Par or Stated Value Per Share | $ / shares     $ 100  
Preferred Stock, Cumulative $100 Par Value, 5.56% Series [Member] | Entergy New Orleans [Member]        
Preferred Stock, Shares Outstanding     60,000 60,000
Preferred Stock, Value | $     $ 6,000 $ 6,000
Preferred Stock, Call Price per Share | $ / shares     $ 102.59  
Preferred stock/preferred membership interests rate     5.56%  
Preferred Stock, Par or Stated Value Per Share | $ / shares     $ 100  
Preferred Stock, Cumulative One Thousand Dollar Par Value, Seven Point Five Percent Series [Member] | Entergy Utility Holding Company LLC [Member]        
Preferred Shares/Units, Authorized [3]     110,000 0
Preferred Shares/Units, Outstanding [3]     110,000 0
Preferred Shares/Units, Value | $ [3]     $ 107,425 $ 0
Preferred stock/preferred membership interests rate 7.50%      
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs | $     $ 2,575  
Preferred Stock, Cumulative One Thousand Dollar Par Value, Seven Point Five Percent Series [Member] | Entergy Asset Management [Member]        
Preferred stock/preferred membership interests rate [2]     7.50%  
Minimum [Member] | Preferred Stock, 4.32% - 6.45% Series [Member] | Entergy Arkansas [Member]        
Preferred stock/preferred membership interests rate     4.32%  
Minimum [Member] | Preferred Stock, 4.36% - 6.25% Series [Member] | Entergy Mississippi [Member]        
Preferred stock/preferred membership interests rate     4.36%  
Minimum [Member] | Preferred Stock, 4.36% - 5.56% Series [Member] | Entergy New Orleans [Member]        
Preferred stock/preferred membership interests rate     4.36%  
Maximum [Member] | Preferred Stock, 4.32% - 6.45% Series [Member] | Entergy Arkansas [Member]        
Preferred stock/preferred membership interests rate     6.45%  
Maximum [Member] | Preferred Stock, 4.36% - 6.25% Series [Member] | Entergy Mississippi [Member]        
Preferred stock/preferred membership interests rate     6.25%  
Maximum [Member] | Preferred Stock, 4.36% - 5.56% Series [Member] | Entergy New Orleans [Member]        
Preferred stock/preferred membership interests rate     5.56%  
[1] (a)In 2007, Entergy Louisiana Holdings, an Entergy subsidiary, purchased 160,000 of these shares from the holders.
[2] Dollar amount outstanding is net of $751 thousand of preferred stock issuance costs.
[3] (b)Dollar amount outstanding is net of $2,575 thousand of preferred stock issuance costs.