Income Taxes (Schedule of Unrecognized Tax Benefits Roll Forward) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Unrecognized Tax Benefits [Roll Forward]
Unrecognized Tax Benefits	$ 2,354,867	$ 2,439,910	$ 6,393,599	$ 5,759,968
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	12,731	332,884	792,134
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	21,149	194,894	37,259
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(85,715)	(1,300,381)	(195,762)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	(33,208)	(3,181,086)	0
Offset to gross unrecognized tax benefits, credit and loss carryforward	(2,079,778)	(2,160,484)	(5,566,212)
Cash Paid To Taxing Authorities	(27,000)	0	(82,000)
Unrecognized Tax Benefits Net Of Unused Tax Attributes And Payments	248,089	279,426	745,387
Entergy Arkansas [Member]
Unrecognized Tax Benefits [Roll Forward]
Unrecognized Tax Benefits	45,413	69,197	1,452,819	1,408,494
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	2,732	2,249	40,502
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	25,784	0	6,233
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(52,300)	(148,558)	(2,410)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities		(1,237,313)
Offset to gross unrecognized tax benefits, credit and loss carryforward	(30,333)	(34,683)	(1,277,414)
Unrecognized Tax Benefits Net Of Unused Tax Attributes And Payments	15,080	34,514	175,405
Entergy Louisiana [Member]
Unrecognized Tax Benefits [Roll Forward]
Unrecognized Tax Benefits	867,116	864,043	1,350,836	604,628
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	1,921	332,320	750,320
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	10,357	0	10,262
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(9,205)	(458,072)	(14,374)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities		(361,041)
Offset to gross unrecognized tax benefits, credit and loss carryforward	(753,101)	(735,612)	(1,328,916)
Unrecognized Tax Benefits Net Of Unused Tax Attributes And Payments	114,015	128,431	21,920
Entergy Mississippi [Member]
Unrecognized Tax Benefits [Roll Forward]
Unrecognized Tax Benefits	5,989	5,653	547,548	549,569
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	237	209	185
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	536	0	1,122
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(437)	(16,853)	(3,328)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities		(525,251)
Offset to gross unrecognized tax benefits, credit and loss carryforward	(4,997)	(3,778)	(504,940)
Unrecognized Tax Benefits Net Of Unused Tax Attributes And Payments	992	1,875	42,608
Entergy New Orleans [Member]
Unrecognized Tax Benefits [Roll Forward]
Unrecognized Tax Benefits	19,508	19,331	638,726	639,497
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	163	78	72
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	153	0	393
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(139)	(191,336)	(1,236)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities		(428,137)
Offset to gross unrecognized tax benefits, credit and loss carryforward	(11,639)	(11,721)	(455,928)
Unrecognized Tax Benefits Net Of Unused Tax Attributes And Payments	7,869	7,610	182,798
Entergy Texas [Member]
Unrecognized Tax Benefits [Roll Forward]
Unrecognized Tax Benefits	384,333	415,205	389,366	552,295
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	378	196	173
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	560	94,793	801
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(31,810)	(67,156)	(163,903)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities		(1,994)
Offset to gross unrecognized tax benefits, credit and loss carryforward	(314,446)	(381,561)	(377,054)
Unrecognized Tax Benefits Net Of Unused Tax Attributes And Payments	69,887	33,644	12,312
System Energy [Member]
Unrecognized Tax Benefits [Roll Forward]
Unrecognized Tax Benefits	16,415	14,301	23,702	$ 23,356
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	833	752	690
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	1,281	0	761
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	0	(9,532)	(1,105)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities		(621)
Offset to gross unrecognized tax benefits, credit and loss carryforward	(16,415)	(14,301)	(23,702)
Unrecognized Tax Benefits Net Of Unused Tax Attributes And Payments	$ 0	$ 0	$ 0