Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 51,732	$ 76,536	$ 392,014	$ 312,299	$ 128,268	$ 704,312
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	246,489		(3,292)		242,821	(1,265)
Other Comprehensive Income (Loss), Net of Tax	246,489	(3,668)	(3,292)	2,027	242,821	(1,265)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	298,221		388,722		371,089	703,047
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	2,810		770		4,065	2,133
Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total	295,411		387,952		367,024	700,914
Entergy Louisiana [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	131,114	182,723	263,260	244,024	313,837	507,284
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	(2,023)		(1,773)		(4,047)	(2,559)
Other Comprehensive Income (Loss), Net of Tax	(2,023)	(2,024)	(1,773)	(786)	(4,047)	(2,559)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	129,091		261,487		309,790	504,725
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	788		819		1,583	1,373
Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total	128,303		260,668		308,207	503,352
Entergy Arkansas [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	95,359	(32,280)	66,948	59,397	63,079	126,344
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	(825)		(1,006)		(2,643)	(2,635)
System Energy [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 24,848	$ 31,118	$ 25,759	$ 27,545	$ 55,966	$ 53,304