Retirement And Other Postretirement Benefits (Reclassification Out Of Accumulated Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Total
Parent Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	5,986	5,078
Amortization of loss	(17,588)	(8,981)
Settlement loss		(1,162)
Total	(11,602)	(5,065)
Entergy Gulf States Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	1,022	559
Amortization of loss	(1,733)	(782)
Total	(711)	(223)
Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	845	844
Amortization of loss	(802)	(378)
Total	43	466
Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments	(76)	0
Pension Plans Defined Benefit [Member] | Parent Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	(389)	(389)
Amortization of loss	(12,627)	(6,734)
Total	(13,016)	(7,123)
Pension Plans Defined Benefit [Member] | Entergy Gulf States Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	0	0
Amortization of loss	(751)	(478)
Total	(751)	(478)
Pension Plans Defined Benefit [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	0	0
Amortization of loss	0	0
Total	0	0
Other Postretirement [Member] | Parent Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	6,482	5,571
Amortization of loss	(4,409)	(1,673)
Total	2,073	3,898
Other Postretirement [Member] | Entergy Gulf States Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	1,022	559
Amortization of loss	(977)	(303)
Total	45	256
Other Postretirement [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	845	844
Amortization of loss	(802)	(378)
Total	43	466
Non-Qualified Pension Plans [Member] | Parent Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	(107)	(104)
Amortization of loss	(552)	(574)
Settlement loss		(1,162)
Total	(659)	(1,840)
Non-Qualified Pension Plans [Member] | Entergy Gulf States Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	0	0
Amortization of loss	(5)	(1)
Total	(5)	(1)
Non-Qualified Pension Plans [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	0	0
Amortization of loss	0	0
Total	$ 0	$ 0