Retirement And Other Postretirement Benefits (Reclassification Out Of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	$ 5,682	$ 5,325	$ 9,401	$ 10,652
Amortization of loss	(27,619)	(18,980)	(54,937)	(37,969)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax		(918)		(2,055)
Total	(21,937)	(14,573)	(45,536)	(29,372)
Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	1,698	1,837	2,787	3,674
Amortization of loss	(419)	(526)	(720)	(1,052)
Total	1,279	1,311	2,067	2,622
Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	0	0	0	0
Amortization of loss	(26,461)	(18,736)	(52,923)	(37,470)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax		(162)		(1,299)
Total	(26,461)	(18,898)	(52,923)	(38,769)
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	(499)	(699)	(998)	(1,397)
Total	(499)	(699)	(998)	(1,397)
Other Postretirement [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	5,739	5,375	9,516	10,750
Amortization of loss	(327)	308	(352)	615
Recognized Net Gain (Loss) Due To Settlements, Pre Tax		0		0
Total	5,412	5,683	9,164	11,365
Other Postretirement [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	1,698	1,837	2,787	3,674
Amortization of loss	81	174	280	348
Total	1,779	2,011	3,067	4,022
Non Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	(57)	(50)	(115)	(98)
Amortization of loss	(831)	(552)	(1,662)	(1,114)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax		(756)		(756)
Total	(888)	(1,358)	(1,777)	(1,968)
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)	(1)	(2)	(3)
Total	$ (1)	$ (1)	$ (2)	$ (3)