Retirement And Other Postretirement Benefits (Reclassification Out Of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	$ 5,325	$ 5,425	$ 15,977	$ 16,278
Amortization of loss	(20,919)	(24,740)	(58,888)	(74,503)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	(16,630)	(76)	(18,685)	(2,098)
Total	(32,224)	(19,391)	(61,596)	(60,323)
Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	1,837	1,934	5,511	5,802
Amortization of loss	(526)	(1,257)	(1,578)	(3,770)
Total	1,311	677	3,933	2,032
Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	0	(99)	0	(297)
Amortization of loss	(20,686)	(21,958)	(58,156)	(65,870)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	(16,257)	0	(17,557)	0
Total	(36,943)	(22,057)	(75,713)	(66,167)
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	(699)	(867)	(2,096)	(2,601)
Total	(699)	(867)	(2,096)	(2,601)
Other Postretirement [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	5,375	5,595	16,125	16,786
Amortization of loss	308	(1,932)	923	(5,801)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	0	0	0	0
Total	5,683	3,663	17,048	10,985
Other Postretirement [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	1,837	1,934	5,511	5,802
Amortization of loss	174	(388)	522	(1,164)
Total	2,011	1,546	6,033	4,638
Non Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	(50)	(71)	(148)	(211)
Amortization of loss	(541)	(850)	(1,655)	(2,832)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	(373)	(76)	(1,128)	(2,098)
Total	(964)	(997)	(2,931)	(5,141)
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	(1)	(2)	(4)	(5)
Total	$ (1)	$ (2)	$ (4)	$ (5)