Preferred Equity (Schedule Of Number Of Shares And Units Authorized And Outstanding And Dollar Value Of Preferred Stock) (Details) - USD ($)	1 Months Ended			12 Months Ended
	Nov. 30, 2017	Oct. 31, 2015	Dec. 31, 2013	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Payments for Repurchase of Preferred Stock and Preference Stock				$ 20,599,000	$ 115,283,000	$ 94,285,000
Preferred Stock, Shares Authorized				892,307	1,075,105
Preferred Stock, Shares Outstanding				892,307	1,075,105
Preferred Stock, Value				$ 197,803,000	$ 203,185,000
Preferred Shares/Units, Authorized				642,307	825,105
Preferred Shares/Units, Outstanding				642,307	825,105
Preferred Shares/Units, Value				$ 173,554,000	$ 178,936,000
Entergy Arkansas [Member]
Payments for Repurchase of Preferred Stock and Preference Stock				$ 0	$ 85,283,000	0
Preferred Stock, Shares Outstanding				313,500	313,500
Preferred Stock, Value				$ 31,350,000	$ 31,350,000
Entergy Louisiana [Member]
Payments for Repurchase of Preferred Stock and Preference Stock				0	0	110,286,000
Entergy Mississippi [Member]
Payments for Repurchase of Preferred Stock and Preference Stock				$ 0	$ 30,000,000	0
Preferred Stock, Shares Outstanding				203,807	203,807
Preferred Stock, Value				$ 20,381,000	$ 20,381,000
Entergy New Orleans [Member]
Payments for Repurchase of Preferred Stock and Preference Stock				$ 20,599,000	$ 0	$ 0
Preferred Stock, Shares Outstanding				0	197,798
Preferred Stock, Value				$ 0	$ 19,780,000
Preferred Stock, 4.32% - 4.72% Series [Member] | Entergy Arkansas [Member]
Preferred Shares/Units, Authorized				313,500	313,500
Preferred Shares/Units, Outstanding				313,500	313,500
Preferred Shares/Units, Value				$ 31,350,000	$ 31,350,000
Preferred Stock, 4.36% - 5.56% Series [Member] | Entergy New Orleans [Member]
Preferred Shares/Units, Authorized				0	197,798
Preferred Shares/Units, Outstanding				0	197,798
Preferred Shares/Units, Value				$ 0	$ 19,780,000
Preferred Stock, 4.36% - 4.92% Series [Member] | Entergy Mississippi [Member]
Preferred Shares/Units, Authorized				203,807	203,807
Preferred Shares/Units, Outstanding				203,807	203,807
Preferred Shares/Units, Value				$ 20,381,000	$ 20,381,000
Preferred Stock, 8.75% Rate [Member] | Entergy Finance Holding Inc [Member]
Preferred Stock, Shares Authorized				250,000	250,000
Preferred Stock, Shares Outstanding				250,000	250,000
Preferred Stock, Value				$ 24,249,000	$ 24,249,000
Preferred stock/preferred membership interests rate			8.75%	8.75%
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs				$ 751,000
Preferred Stock, Cumulative $100 Par Value, 4.32% Series [Member] | Entergy Arkansas [Member]
Preferred Stock, Shares Outstanding				70,000	70,000
Preferred Stock, Value				$ 7,000,000	$ 7,000,000
Preferred Stock, Call Price per Share				$ 103.65
Preferred stock/preferred membership interests rate				4.32%
Preferred Stock, Par or Stated Value Per Share				$ 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				$ 9,350,000	$ 9,350,000
Preferred Stock, Call Price per Share				$ 107.00
Preferred stock/preferred membership interests rate				4.72%
Preferred Stock, Par or Stated Value Per Share				$ 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				$ 5,992,000	$ 5,992,000
Preferred Stock, Call Price per Share				$ 103.86
Preferred stock/preferred membership interests rate				4.36%
Preferred Stock, Par or Stated Value Per Share				$ 100
Preferred Stock, Cumulative $100 Par Value, 4.36% Series [Member] | Entergy New Orleans [Member]
Payments for Repurchase of Preferred Stock and Preference Stock	$ 6,000,000
Preferred Stock, Shares Outstanding				0	60,000
Preferred Stock, Value				$ 0	$ 6,000,000
Preferred Stock, Call Price per Share				$ 0.00
Preferred stock/preferred membership interests rate	4.36%			4.36%
Preferred Stock, Par or Stated Value Per Share				$ 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				$ 7,500,000	$ 7,500,000
Preferred Stock, Call Price per Share				$ 102.83
Preferred stock/preferred membership interests rate				4.56%
Preferred Stock, Par or Stated Value Per Share				$ 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				$ 4,389,000	$ 4,389,000
Preferred Stock, Call Price per Share				$ 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				$ 7,500,000	$ 7,500,000
Preferred Stock, Call Price per Share				$ 102.50
Preferred stock/preferred membership interests rate				4.56%
Preferred Stock, Par or Stated Value Per Share				$ 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				$ 10,000,000	$ 10,000,000
Preferred Stock, Call Price per Share				$ 102.88
Preferred stock/preferred membership interests rate				4.92%
Preferred Stock, Cumulative $100 Par Value, 4.75% Series [Member] | Entergy New Orleans [Member]
Payments for Repurchase of Preferred Stock and Preference Stock	$ 7,800,000
Preferred Stock, Shares Outstanding				0	77,798
Preferred Stock, Value				$ 0	$ 7,780,000
Preferred Stock, Call Price per Share				$ 0.00
Preferred stock/preferred membership interests rate	4.75%			4.75%
Preferred Stock, Par or Stated Value Per Share				$ 100
Preferred Stock, Cumulative $100 Par Value, 5.56% Series [Member] | Entergy New Orleans [Member]
Payments for Repurchase of Preferred Stock and Preference Stock	$ 6,000,000
Preferred Stock, Shares Outstanding				0	60,000
Preferred Stock, Value				$ 0	$ 6,000,000
Preferred Stock, Call Price per Share				$ 0.00
Preferred stock/preferred membership interests rate	5.56%			5.56%
Preferred Stock, Par or Stated Value Per Share				$ 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				110,000	110,000
Preferred Shares/Units, Outstanding				110,000	110,000
Preferred Shares/Units, Value				$ 107,425,000	$ 107,425,000
Preferred stock/preferred membership interests rate		7.50%		7.50%
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs				$ 2,575,000
Preferred Stock, Cumulative $1,000 Par Value 6.25% Series [Domain] | Entergy Utility Holding Company LLC [Member]
Preferred Shares/Units, Authorized				15,000	0
Preferred Shares/Units, Outstanding				15,000	0
Preferred Shares/Units, Value				$ 14,398,000	$ 0
Preferred stock/preferred membership interests rate	6.25%			6.25%
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs				$ 602,000
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				4.72%
Maximum [Member] | Preferred Stock, 4.36% - 6.25% Series [Member] | Entergy Mississippi [Member]
Preferred stock/preferred membership interests rate				4.92%
Maximum [Member] | Preferred Stock, 4.36% - 5.56% Series [Member] | Entergy New Orleans [Member]
Preferred stock/preferred membership interests rate				5.56%