Income Taxes (Schedule Of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Unrecognized Tax Benefits, Beginning Balance	$ 6,393,599	$ 5,759,968	$ 5,699,339
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	332,884	792,134	101,623
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	194,894	37,259	33,419
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(1,300,381)	(195,762)	(74,413)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	(3,181,086)	0	0
Unrecognized Tax Benefits, Ending Balance	2,439,910	6,393,599	5,759,968
Unrecognized Tax Benefits Net Of Unused Tax Attributes And Payments	279,426	745,387	712,169
Remaining Balances Of Unrecognized Tax Benefits	541,000	3,140,000	3,504,000
Net operating loss carryforwards	2,857,908	2,065,149
Cash Paid To Taxing Authorities	0	82,000	60,000
Offset to gross unrecognized tax benefits, credit and loss carryforward	(2,160,484)	(5,566,212)	(4,987,799)
Entergy Arkansas [Member]
Unrecognized Tax Benefits, Beginning Balance	1,452,819	1,408,494	1,364,635
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	2,249	40,502	30,419
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	0	6,233	15,013
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(148,558)	(2,410)	(1,573)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	(1,237,313)
Unrecognized Tax Benefits, Ending Balance	69,197	1,452,819	1,408,494
Unrecognized Tax Benefits Net Of Unused Tax Attributes And Payments	34,514	175,405	415,851
Net operating loss carryforwards	94,321	10,491
Offset to gross unrecognized tax benefits, credit and loss carryforward	(34,683)	(1,277,414)	(992,643)
Entergy Louisiana [Member]
Unrecognized Tax Benefits, Beginning Balance	1,350,836	604,628	640,295
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	332,320	750,320	13,437
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	0	10,262	9,304
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(458,072)	(14,374)	(58,408)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	(361,041)
Unrecognized Tax Benefits, Ending Balance	864,043	1,350,836	604,628
Unrecognized Tax Benefits Net Of Unused Tax Attributes And Payments	128,431	21,920	0
Net operating loss carryforwards	459,553	307,175
Offset to gross unrecognized tax benefits, credit and loss carryforward	(735,612)	(1,328,916)	(604,628)
Entergy Mississippi [Member]
Unrecognized Tax Benefits, Beginning Balance	547,548	549,569	549,717
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	209	185	684
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	0	1,122	1,504
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(16,853)	(3,328)	(2,336)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	(525,251)
Unrecognized Tax Benefits, Ending Balance	5,653	547,548	549,569
Unrecognized Tax Benefits Net Of Unused Tax Attributes And Payments	1,875	42,608	160,841
Net operating loss carryforwards	8,375	10,140
Offset to gross unrecognized tax benefits, credit and loss carryforward	(3,778)	(504,940)	(388,728)
Entergy New Orleans [Member]
Unrecognized Tax Benefits, Beginning Balance	638,726	639,497	639,546
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	78	72	1,050
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	0	393	6
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(191,336)	(1,236)	(1,105)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	(428,137)
Unrecognized Tax Benefits, Ending Balance	19,331	638,726	639,497
Unrecognized Tax Benefits Net Of Unused Tax Attributes And Payments	7,610	182,798	154,598
Net operating loss carryforwards	26,227	12,146
Offset to gross unrecognized tax benefits, credit and loss carryforward	(11,721)	(455,928)	(484,899)
Entergy Texas [Member]
Unrecognized Tax Benefits, Beginning Balance	389,366	552,295	521,932
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	196	173	32,616
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	94,793	801	2,315
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(67,156)	(163,903)	(4,568)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	(1,994)
Unrecognized Tax Benefits, Ending Balance	415,205	389,366	552,295
Unrecognized Tax Benefits Net Of Unused Tax Attributes And Payments	33,644	12,312	11,601
Net operating loss carryforwards	61	27,620
Offset to gross unrecognized tax benefits, credit and loss carryforward	(381,561)	(377,054)	(540,694)
System Energy [Member]
Unrecognized Tax Benefits, Beginning Balance	23,702	23,356	21,652
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	752	690	1,753
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	0	761	1,897
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(9,532)	(1,105)	(1,946)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	(621)
Unrecognized Tax Benefits, Ending Balance	14,301	23,702	23,356
Unrecognized Tax Benefits Net Of Unused Tax Attributes And Payments	0	0	14,780
Net operating loss carryforwards	35,089	20,639
Offset to gross unrecognized tax benefits, credit and loss carryforward	$ (14,301)	$ (23,702)	$ (8,576)