Retirement And Other Postretirement Benefits (Schedule of reclassifications out of accumulated other comprehensive income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	$ 3,462	$ 3,473
Amortization of Gains (Losses), Before Tax	2,551	1,397
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	6,013	4,870
Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	1,136	1,136
Amortization of Gains (Losses), Before Tax	1,719	1,634
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	2,855	2,770
Pension Plan [Member] | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	(31)	(40)
Amortization of Gains (Losses), Before Tax	(108)	(80)
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	(139)	(120)
Pension Plan [Member] | Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	0	0
Amortization of Gains (Losses), Before Tax	(411)	(1,138)
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	(411)	(1,138)
Pension Plan [Member] | Entergy Louisiana [Member] | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	0	0
Amortization of Gains (Losses), Before Tax	(1)	0
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	(1)	0
Pension Plan [Member] | Entergy Louisiana [Member] | Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	0	0
Amortization of Gains (Losses), Before Tax	(91)	(104)
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	(91)	(104)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	3,493	3,513
Amortization of Gains (Losses), Before Tax	3,070	2,615
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	6,563	6,128
Other Postretirement Benefits Plan [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost Credit, Before Tax	1,136	1,136
Amortization of Gains (Losses), Before Tax	1,811	1,738
Pension and Other Postretirement Costs, Reclassification Out Of Accumulated Other Comprehensive Income, Before Tax	$ 2,947	$ 2,874