Retirement And Other Postretirement Benefits (Reclassification Out Of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 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	$ 5,075	$ 11,971	$ 10,153
Amortization of loss	(17,588)	(8,970)	(35,176)	(17,951)
Settlement loss		(1,386)		(2,548)
Total	(11,603)	(5,281)	(23,205)	(10,346)
Entergy Gulf States Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	1,021	559	2,043	1,118
Amortization of loss	(1,733)	(781)	(3,466)	(1,563)
Total	(712)	(222)	(1,423)	(445)
Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	845	845	1,690	1,689
Amortization of loss	(802)	(378)	(1,604)	(756)
Total	43	467	86	933
Pension Plans Defined Benefit [Member] | Parent Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	(389)	(389)	(778)	(778)
Amortization of loss	(12,627)	(6,734)	(25,254)	(13,468)
Settlement loss		0		0
Total	(13,016)	(7,123)	(26,032)	(14,246)
Pension Plans Defined Benefit [Member] | Entergy Gulf States Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	0	0	0	0
Amortization of loss	(751)	(477)	(1,502)	(955)
Total	(751)	(477)	(1,502)	(955)
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	12,964	11,141
Amortization of loss	(4,409)	(1,673)	(8,818)	(3,346)
Settlement loss		0		0
Total	2,073	3,897	4,146	7,795
Other Postretirement [Member] | Entergy Gulf States Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	1,022	559	2,044	1,118
Amortization of loss	(977)	(303)	(1,954)	(606)
Total	45	256	90	512
Other Postretirement [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	845	845	1,690	1,689
Amortization of loss	(802)	(378)	(1,604)	(756)
Total	43	467	86	933
Non-Qualified Pension Plans [Member] | Parent Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	(108)	(106)	(215)	(210)
Amortization of loss	(552)	(563)	(1,104)	(1,137)
Settlement loss		(1,386)		(2,548)
Total	(660)	(2,055)	(1,319)	(3,895)
Non-Qualified Pension Plans [Member] | Entergy Gulf States Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	(1)	0	(1)	0
Amortization of loss	(5)	(1)	(10)	(2)
Total	(6)	(1)	(11)	(2)
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