Retirement And Other Postretirement Benefits (Schedule of reclassifications out of accumulated other comprehensive income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax	$ 5,323	$ 5,603	$ 17,349	$ (301,388)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	(3,463)	(3,473)	(10,387)	(10,419)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax	2,265	2,130	7,367	5,167
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement Gain (Loss), Reclassification Adjustment from AOCI, before Tax	(405)		(405)	(316,974)
Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax	2,436	2,770	8,146	8,308
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	(1,136)	(1,136)	(3,408)	(3,408)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax	1,406	1,634	4,844	4,900
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement Gain (Loss), Reclassification Adjustment from AOCI, before Tax	(106)		(106)
Pension Plan [Member] | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax	(372)	(120)	(650)	(360)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	31	40	93	120
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax	(103)	(80)	(319)	(240)
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement Gain (Loss), Reclassification Adjustment from AOCI, before Tax	(238)		(238)	0
Pension Plan [Member] | Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax	(585)	(405)	(1,407)	(319,412)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	0	0	0	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax	(418)	(405)	(1,240)	(2,438)
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement Gain (Loss), Reclassification Adjustment from AOCI, before Tax	(167)		(167)	(316,974)
Pension Plan [Member] | Entergy Louisiana [Member] | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax	0	0	(2)	(2)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	0	0	0	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax	0	0	(2)	(2)
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement Gain (Loss), Reclassification Adjustment from AOCI, before Tax	0		0
Pension Plan [Member] | Entergy Louisiana [Member] | Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax	(200)	(104)	(382)	(312)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	0	0	0	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax	(94)	(104)	(276)	(312)
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement Gain (Loss), Reclassification Adjustment from AOCI, before Tax	(106)		(106)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax	6,280	6,128	19,406	18,384
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	(3,494)	(3,513)	(10,480)	(10,539)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax	2,786	2,615	8,926	7,845
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement Gain (Loss), Reclassification Adjustment from AOCI, before Tax	0		0	0
Other Postretirement Benefits Plan [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax	2,636	2,874	8,530	8,622
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	(1,136)	(1,136)	(3,408)	(3,408)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax	1,500	$ 1,738	5,122	$ 5,214
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement Gain (Loss), Reclassification Adjustment from AOCI, before Tax	$ 0		$ 0