Retirement And Other Postretirement Benefits (Schedule of reclassifications out of accumulated other comprehensive income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	$ 3,473	$ 3,396	$ 10,419	$ 10,191
Amortization of Gains (Losses), Before Tax	2,130	1,700	5,167	4,994
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	5,603	3,177	(301,388)	4,777
Recognized Net Gain (Loss) Due To Settlements, Before Tax		(1,919)	(316,974)	(10,408)
Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	1,136	951	3,408	2,853
Amortization of Gains (Losses), Before Tax	1,634	1,574	4,900	4,703
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	2,770	2,503	8,308	6,005
Recognized Net Gain (Loss) Due To Settlements, Before Tax		(22)		(1,551)
Pension Plan [Member] | Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	0	0	0	0
Amortization of Gains (Losses), Before Tax	(405)	(1,064)	(2,438)	(3,208)
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	(405)	(1,554)	(319,412)	(10,654)
Recognized Net Gain (Loss) Due To Settlements, Before Tax		(490)	(316,974)	(7,446)
Pension Plan [Member] | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	(40)	(113)	(120)	(338)
Amortization of Gains (Losses), Before Tax	(80)	(134)	(240)	(491)
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	(120)	(1,676)	(360)	(3,791)
Recognized Net Gain (Loss) Due To Settlements, Before Tax		(1,429)	0	(2,962)
Pension Plan [Member] | Entergy Louisiana [Member] | Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	0	0	0	0
Amortization of Gains (Losses), Before Tax	(104)	(190)	(312)	(588)
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	(104)	(212)	(312)	(2,139)
Recognized Net Gain (Loss) Due To Settlements, Before Tax		(22)		(1,551)
Pension Plan [Member] | Entergy Louisiana [Member] | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	0	0	0	0
Amortization of Gains (Losses), Before Tax	0	0	(2)	(1)
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	0	0	(2)	(1)
Recognized Net Gain (Loss) Due To Settlements, Before Tax		0		0
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	3,513	3,509	10,539	10,529
Amortization of Gains (Losses), Before Tax	2,615	2,898	7,845	8,693
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	6,128	6,407	18,384	19,222
Recognized Net Gain (Loss) Due To Settlements, Before Tax		0	0	0
Other Postretirement Benefits Plan [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	1,136	951	3,408	2,853
Amortization of Gains (Losses), Before Tax	1,738	1,764	5,214	5,292
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	$ 2,874	2,715	$ 8,622	8,145
Recognized Net Gain (Loss) Due To Settlements, Before Tax		$ 0		$ 0