Retirement And Other Postretirement Benefits (Reclassification Out Of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Total
Parent Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	$ 5,985	$ 5,074	$ 17,956	$ 15,227
Amortization of loss	(17,588)	(8,952)	(52,764)	(26,903)
Settlement loss		(423)		(2,971)
Total	(11,603)	(4,301)	(34,808)	(14,647)
Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	845	844	2,535	2,533
Amortization of loss	(803)	(378)	(2,407)	(1,134)
Total	42	466	128	1,399
Pension Plans Defined Benefit [Member] | Parent Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	(389)	(389)	(1,167)	(1,167)
Amortization of loss	(12,627)	(6,734)	(37,881)	(20,202)
Settlement loss		0		0
Total	(13,016)	(7,123)	(39,048)	(21,369)
Pension Plans Defined Benefit [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	0	0	0	0
Amortization of loss	0	0	0	0
Total	0	0	0	0
Other Postretirement [Member] | Parent Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	6,482	5,570	19,446	16,711
Amortization of loss	(4,409)	(1,673)	(13,227)	(5,019)
Settlement loss		0		0
Total	2,073	3,897	6,219	11,692
Other Postretirement [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	845	844	2,535	2,533
Amortization of loss	(803)	(378)	(2,407)	(1,134)
Total	42	466	128	1,399
Non-Qualified Pension Plans [Member] | Parent Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	(108)	(107)	(323)	(317)
Amortization of loss	(552)	(545)	(1,656)	(1,682)
Settlement loss		(423)		(2,971)
Total	(660)	(1,075)	(1,979)	(4,970)
Non-Qualified Pension Plans [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	0	0	0	0
Amortization of loss	0	0	0	0
Total	$ 0	$ 0	$ 0	$ 0