Retirement And Other Postretirement Benefits (Reclassification Out Of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	$ 6,562	$ 7,355
Amortization of loss	(21,571)	(15,175)
Total	(15,009)	(7,820)
Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	1,934	1,947
Amortization of loss	(1,332)	(1,569)
Total	602	378
Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	(65)	(270)
Amortization of loss	(18,450)	(12,482)
Total	(18,515)	(12,752)
Pension Plans Defined Benefit [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	0	0
Amortization of loss	(865)	(836)
Total	(865)	(836)
Other Postretirement [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	6,717	7,738
Amortization of loss	(2,202)	(2,063)
Total	4,515	5,675
Other Postretirement [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	1,934	1,947
Amortization of loss	(465)	(731)
Total	1,469	1,216
Non-Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	(90)	(113)
Amortization of loss	(919)	(630)
Total	(1,009)	(743)
Non-Qualified Pension Plans [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	0	0
Amortization of loss	(2)	(2)
Total	$ (2)	$ (2)