Retirement And Other Postretirement Benefits (Reclassification Out Of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	$ 6,564	$ 7,355	$ 13,126	$ 14,710
Amortization of loss	(21,554)	(15,177)	(43,125)	(30,352)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	(1,765)		(1,765)
Total	(16,755)	(7,822)	(31,764)	(15,642)
Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	1,934	1,947	3,868	3,894
Amortization of loss	(1,332)	(1,573)	(2,664)	(3,142)
Total	602	374	1,204	752
Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	(65)	(270)	(130)	(540)
Amortization of loss	(18,450)	(12,482)	(36,899)	(24,964)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	0		0
Total	(18,515)	(12,752)	(37,029)	(25,504)
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	(865)	(836)	(1,730)	(1,672)
Total	(865)	(836)	(1,730)	(1,672)
Other Postretirement [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	6,718	7,738	13,435	15,476
Amortization of loss	(2,202)	(2,063)	(4,404)	(4,126)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	0		0
Total	4,516	5,675	9,031	11,350
Other Postretirement [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	1,934	1,947	3,868	3,894
Amortization of loss	(465)	(732)	(930)	(1,464)
Total	1,469	1,215	2,938	2,430
Non-Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	(89)	(113)	(179)	(226)
Amortization of loss	(902)	(632)	(1,822)	(1,262)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	(1,765)		(1,765)
Total	(2,756)	(745)	(3,766)	(1,488)
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	(2)	(5)	(4)	(6)
Total	$ (2)	$ (5)	$ (4)	$ (6)