Rate And Regulatory Matters (Fuel And Purchased Power Cost Recovery) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Other Regulatory Assets	$ 4,769,913	$ 4,704,796
Entergy Arkansas [Member]
Deferred fuel costs	163,600	57,800
Other Regulatory Assets	1,428,029	1,333,773
Deferred fuel cost noncurrent	66,900	66,700
Entergy Louisiana [Member]
Deferred fuel costs	119,900	102,900
Other Regulatory Assets	1,168,058	1,217,874
Deferred fuel cost noncurrent	168,100	168,100
Entergy Mississippi [Member]
Deferred fuel costs	7,000	(107,800)
Other Regulatory Assets	342,213	328,681
Entergy New Orleans [Member]
Deferred fuel costs	8,900	(24,900)
Other Regulatory Assets	268,106	265,322
Deferred fuel cost noncurrent	4,100	4,100
Entergy Texas [Member]
Deferred fuel costs	(54,500)	(25,100)
Other Regulatory Assets	$ 740,156	$ 812,862