Retirement And Other Postretirement Benefits (Reclassification Out Of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	$ 3,837	$ 5,248
Amortization of loss	(13,925)	(34,529)
Total	(10,870)	(29,281)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	(782)
Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	1,158	1,230
Amortization of loss	(319)	(679)
Total	839	551
Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	0	0
Amortization of loss	(12,910)	(33,439)
Total	(12,910)	(33,439)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	0
Pension Plans Defined Benefit [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	0	0
Amortization of loss	(504)	(769)
Total	(504)	(769)
Other Postretirement [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	4,014	5,288
Amortization of loss	(596)	(495)
Total	3,418	4,793
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	0
Other Postretirement [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	1,158	1,230
Amortization of loss	186	91
Total	1,344	1,321
Non Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	(177)	(40)
Amortization of loss	(419)	(595)
Total	(1,378)	(635)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	(782)
Non Qualified Pension Plans [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	0	0
Amortization of loss	(1)	(1)
Total	$ (1)	$ (1)