Schedule II - Valuation And Qualifying Accounts (Details) - Allowance for Doubtful Accounts [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 39,895	$ 35,663	$ 34,311
Additions Charged to Income or Regulatory Assets	7,505	6,926	4,573
Other Changes Deductions from Provisions	(35,476)	(2,694)	(3,221)
Balance at End of Period	11,924	39,895	35,663
Entergy Arkansas [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	34,226	32,247	30,113
Additions Charged to Income or Regulatory Assets	902	2,759	2,881
Other Changes Deductions from Provisions	(33,917)	(780)	(747)
Balance at End of Period	1,211	34,226	32,247
Entergy Louisiana [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	4,209	1,609	1,874
Additions Charged to Income or Regulatory Assets	2,942	3,464	842
Other Changes Deductions from Provisions	(874)	(864)	(1,107)
Balance at End of Period	6,277	4,209	1,609
Entergy Mississippi [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	718	873	906
Additions Charged to Income or Regulatory Assets	259	247	269
Other Changes Deductions from Provisions	(428)	(402)	(302)
Balance at End of Period	549	718	873
Entergy New Orleans [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	268	262	974
Additions Charged to Income or Regulatory Assets	2,872	217	99
Other Changes Deductions from Provisions	(81)	(211)	(811)
Balance at End of Period	3,059	268	262
Entergy Texas [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	474	672	443
Additions Charged to Income or Regulatory Assets	531	239	483
Other Changes Deductions from Provisions	(177)	(437)	(254)
Balance at End of Period	$ 828	$ 474	$ 672