Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 698,424	$ 645,754	$ 1,532,800	$ 774,022
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	4,083	4,176	12,414	(238,645)
Other Comprehensive Income (Loss), Net of Tax, Total	(4,083)	(4,176)	(12,414)	238,645
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total	694,341	641,578	1,520,386	1,012,667
Preferred dividend requirements of subsidiaries and net income (loss) attributable to noncontrolling interests	4,624	814	10,310	4,879
Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total	689,717	640,764	1,510,076	1,007,788
Entergy Louisiana [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	342,889	349,795	897,266	663,632
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	1,818	2,024	4,921	6,071
Other Comprehensive Income (Loss), Net of Tax, Total	(1,818)	(2,024)	(4,921)	(6,071)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total	341,071	347,771	892,345	657,561
Net Income (Loss) Attributable to Noncontrolling Interest	731	775	2,228	2,358
Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total	340,340	346,996	890,117	655,203
Entergy Arkansas [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	191,740	185,770	377,456	248,849
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net Income (Loss) Attributable to Noncontrolling Interest	(752)	(957)	(2,832)	(3,600)
System Energy [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 21,271	$ 26,077	$ 65,985	$ 82,043