Retirement And Other Postretirement Benefits (Reclassification Out Of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	$ 5,325	$ 5,424	$ 10,652	$ 10,850
Amortization of loss	(18,980)	(24,808)	(37,969)	(49,760)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	(918)	(406)	(2,055)	(2,022)
Total	(14,573)	(19,790)	(29,372)	(40,932)
Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	1,837	1,934	3,674	3,868
Amortization of loss	(526)	(1,256)	(1,052)	(2,513)
Total	1,311	678	2,622	1,355
Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	0	(99)	0	(198)
Amortization of loss	(18,736)	(21,957)	(37,470)	(43,914)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	(162)	0	(1,299)	0
Total	(18,898)	(22,056)	(38,769)	(44,112)
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)	(1,397)	(1,734)
Total	(699)	(867)	(1,397)	(1,734)
Other Postretirement [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	5,375	5,594	10,750	11,189
Amortization of loss	308	(1,933)	615	(3,865)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	0	0	0	0
Total	5,683	3,661	11,365	7,324
Other Postretirement [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	1,837	1,934	3,674	3,868
Amortization of loss	174	(387)	348	(775)
Total	2,011	1,547	4,022	3,093
Non Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	(50)	(71)	(98)	(141)
Amortization of loss	(552)	(918)	(1,114)	(1,981)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	(756)	(406)	(756)	(2,022)
Total	(1,358)	(1,395)	(1,968)	(4,144)
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)	(3)	(4)
Total	$ (1)	$ (2)	$ (3)	$ (4)