Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 471,954	$ 51,732	$ 834,376	$ 128,268
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	4,602	(246,489)	8,331	(242,821)
Other Comprehensive Income (Loss), Net of Tax, Total	(4,602)	246,489	(8,331)	242,821
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total	467,352	298,221	826,045	371,089
Preferred dividend requirements of subsidiaries and net income (loss) attributable to noncontrolling interests	4,024	2,810	5,686	4,065
Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total	463,328	295,411	820,359	367,024
Entergy Louisiana [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	300,180	131,114	554,377	313,837
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	2,132	2,023	3,103	4,047
Other Comprehensive Income (Loss), Net of Tax, Total	(2,132)	(2,023)	(3,103)	(4,047)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total	298,048	129,091	551,274	309,790
Net Income (Loss) Attributable to Noncontrolling Interest	745	788	1,497	1,583
Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total	297,303	128,303	549,777	308,207
Entergy Arkansas [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	99,193	95,359	185,716	63,079
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net Income (Loss) Attributable to Noncontrolling Interest	(889)	(825)	(2,080)	(2,643)
System Energy [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 21,325	$ 24,848	$ 44,714	$ 55,966