Retirement And Other Postretirement Benefits (Schedule of reclassifications out of accumulated other comprehensive income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	$ 3,473	$ 3,397
Amortization of Gains (Losses), Before Tax	1,397	1,661
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	4,870	(2,758)
Recognized Net Gain (Loss) Due To Settlements, Before Tax		(7,816)
Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	1,136	951
Amortization of Gains (Losses), Before Tax	1,634	1,565
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	2,770	1,076
Recognized Net Gain (Loss) Due To Settlements, Before Tax		(1,440)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	3,513	3,510
Amortization of Gains (Losses), Before Tax	2,615	2,898
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	6,128	6,408
Recognized Net Gain (Loss) Due To Settlements, Before Tax		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
Amortization of Gains (Losses), Before Tax	1,738	1,764
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	2,874	2,715
Recognized Net Gain (Loss) Due To Settlements, Before Tax		0
Non Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	(40)	(113)
Amortization of Gains (Losses), Before Tax	(80)	(197)
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	(120)	(1,479)
Recognized Net Gain (Loss) Due To Settlements, Before Tax		(1,169)
Non Qualified Pension Plans [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	0	0
Amortization of Gains (Losses), Before Tax	0	0
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	0	0
Recognized Net Gain (Loss) Due To Settlements, Before Tax		0
Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	0	0
Amortization of Gains (Losses), Before Tax	(1,138)	(1,040)
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	(1,138)	(7,687)
Recognized Net Gain (Loss) Due To Settlements, Before Tax		(6,647)
Qualified Pension Plans [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	0	0
Amortization of Gains (Losses), Before Tax	(104)	(199)
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	$ (104)	(1,639)
Recognized Net Gain (Loss) Due To Settlements, Before Tax		$ (1,440)