Income Taxes (Schedule Of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Gross balance January 1	$ 5,759,968	$ 5,699,339	$ 7,383,154
Additions based on tax positions related to the current year	792,134	101,623	669,207
Additions for tax positions of prior years	37,259	33,419	98,591
Reductions for tax positions of prior years	(195,762)	(74,413)	(935,735)
Settlements	0	0	1,515,878
Gross balance at December 31	6,393,599	5,759,968	5,699,339
Unrecognized tax benefits net of unused tax attributes and payments	745,387	712,169	979,125
Remaining balances of unrecognized tax benefits, effective income tax rates	3,140,000	3,504,000	3,491,000
Net operating loss carryforwards	2,065,149	2,868,424
Cash Paid To Taxing Authorities	82,000	60,000	10,000
Offset to gross unrecognized tax benefits, credit and loss carryforward	(5,566,212)	(4,987,799)	(4,710,214)
Entergy Arkansas [Member]
Gross balance January 1	1,408,494	1,364,635	1,341,242
Additions based on tax positions related to the current year	40,502	30,419	9,403
Additions for tax positions of prior years	6,233	15,013	13,400
Reductions for tax positions of prior years	(2,410)	(1,573)	(11,346)
Settlements			11,936
Gross balance at December 31	1,452,819	1,408,494	1,364,635
Unrecognized tax benefits net of unused tax attributes and payments	175,405	415,851	252,007
Net operating loss carryforwards	10,491	275,054
Offset to gross unrecognized tax benefits, credit and loss carryforward	(1,277,414)	(992,643)	(1,112,628)
Entergy Louisiana [Member]
Gross balance January 1	604,628	640,295	2,381,653
Additions based on tax positions related to the current year	750,320	13,437	35,681
Additions for tax positions of prior years	10,262	9,304	10,508
Reductions for tax positions of prior years	(14,374)	(58,408)	(679,601)
Settlements			1,107,946
Gross balance at December 31	1,350,836	604,628	640,295
Unrecognized tax benefits net of unused tax attributes and payments	21,920	0	0
Net operating loss carryforwards	307,175	1,228,547
Offset to gross unrecognized tax benefits, credit and loss carryforward	(1,328,916)	(604,628)	(640,295)
Entergy Mississippi [Member]
Gross balance January 1	549,569	549,717	566,287
Additions based on tax positions related to the current year	185	684	5,619
Additions for tax positions of prior years	1,122	1,504	1,156
Reductions for tax positions of prior years	(3,328)	(2,336)	(24,173)
Settlements			828
Gross balance at December 31	547,548	549,569	549,717
Unrecognized tax benefits net of unused tax attributes and payments	42,608	160,841	84,038
Net operating loss carryforwards	10,140	166,008
Offset to gross unrecognized tax benefits, credit and loss carryforward	(504,940)	(388,728)	(465,679)
Entergy New Orleans [Member]
Gross balance January 1	639,497	639,546	716,773
Additions based on tax positions related to the current year	72	1,050	2,430
Additions for tax positions of prior years	393	6	294
Reductions for tax positions of prior years	(1,236)	(1,105)	(80,267)
Settlements			316
Gross balance at December 31	638,726	639,497	639,546
Unrecognized tax benefits net of unused tax attributes and payments	182,798	154,598	187,624
Net operating loss carryforwards	12,146	105,549
Offset to gross unrecognized tax benefits, credit and loss carryforward	(455,928)	(484,899)	(451,922)
Entergy Texas [Member]
Gross balance January 1	552,295	521,932	21,406
Additions based on tax positions related to the current year	173	32,616	504,362
Additions for tax positions of prior years	801	2,315	799
Reductions for tax positions of prior years	(163,903)	(4,568)	(5,559)
Settlements			924
Gross balance at December 31	389,366	552,295	521,932
Unrecognized tax benefits net of unused tax attributes and payments	12,312	11,601	14,212
Net operating loss carryforwards	27,620	81
Offset to gross unrecognized tax benefits, credit and loss carryforward	(377,054)	(540,694)	(507,720)
System Energy [Member]
Gross balance January 1	23,356	21,652	473,331
Additions based on tax positions related to the current year	690	1,753	4,013
Additions for tax positions of prior years	761	1,897	4,606
Reductions for tax positions of prior years	(1,105)	(1,946)	(41,466)
Settlements			418,832
Gross balance at December 31	23,702	23,356	21,652
Unrecognized tax benefits net of unused tax attributes and payments	0	14,780	14,239
Net operating loss carryforwards	20,639	0
Offset to gross unrecognized tax benefits, credit and loss carryforward	$ (23,702)	$ (8,576)	$ (7,413)