Common Equity Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Total	$ 29,294	$ 140,774	$ 116,679
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		39,919
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		100,855
Accumulated Other Comprehensive Income (Loss), Net of Tax	(162,460)	(191,754)	(332,528)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Total		1,035
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		127
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		908
Accumulated Other Comprehensive Income (Loss), Net of Tax		0	(1,035)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Total	29,294	146,893
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(7,110)	33,949
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	36,404	112,944
Accumulated Other Comprehensive Income (Loss), Net of Tax	(162,460)	(191,754)	(338,647)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Total		(7,154)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		5,843
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		(12,997)
Accumulated Other Comprehensive Income (Loss), Net of Tax		0	7,154
Entergy Louisiana [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Total	(572)	47,092	3,951
Accumulated Other Comprehensive Income (Loss), Net of Tax	54,798	55,370
Entergy Louisiana [Member] | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Total	(572)	47,092
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(6,175)	(995)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	5,603	48,087
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ 54,798	$ 55,370	$ 8,278