Business Segment Information Narrative (Details) - USD ($) $ in Thousands	1 Months Ended				3 Months Ended			12 Months Ended
	Mar. 31, 2023	Jun. 30, 2022	May 31, 2022	May 31, 2021	Dec. 31, 2023	Sep. 30, 2023	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Restructuring Charges									$ 3,000	$ 13,000
Restructuring Reserve									0	37,000	$ 159,000
Asset Impairment Charges								$ 42,679	(163,464)	263,625
Indian Point Energy Center [Member]
Segment Reporting Information [Line Items]
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property				$ 340,000
Palisades [Member]
Segment Reporting Information [Line Items]
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property		$ 166,000
System Energy [Member]
Segment Reporting Information [Line Items]
Reduction to income tax expense								1,000
Regulatory charge related to System Energy settlement		551,000			$ 40,000
Regulatory charge related to System Energy settlement - net of tax		413,000
Entergy Louisiana [Member]
Segment Reporting Information [Line Items]
Reduction to income tax expense								42,000
Regulatory charge recorded as a result of reduction in income tax expense	$ 103,000		$ 224,000				$ 103,000
Regulatory charge recorded as a result of reduction in income tax expense, net of tax	$ 76,000		165,000				76,000
Reduction to income tax expense - net, offset by other tax charges							129,000
Regulatory charge to reflect credits expected to be provided to customers as a result of the resolution of the 2016-2018 IRS audit, net of tax								28,000
Entergy Arkansas [Member]
Segment Reporting Information [Line Items]
Reduction to income tax expense								9,000
Asset Impairment Charges								78,434	0	0
Utility [Member]
Segment Reporting Information [Line Items]
Asset Impairment Charges								79,962	0	0
Reduction in income tax expense as a result of the resolution of the 2016-2018 IRS audit					568,000
Regulatory charge to reflect credits expected to be provided to customers as a result of the resolution of the 2016-2018 IRS audit					98,000
Regulatory charge to reflect credits expected to be provided to customers as a result of the resolution of the 2016-2018 IRS audit, net of tax					72,000
Utility [Member] | System Energy [Member]
Segment Reporting Information [Line Items]
Regulatory charge related to System Energy settlement		551,000
Regulatory charge related to System Energy settlement - net of tax		413,000
Utility [Member] | Entergy Louisiana [Member]
Segment Reporting Information [Line Items]
Reduction to income tax expense			283,000
Regulatory charge recorded as a result of reduction in income tax expense			224,000				103,000
Regulatory charge recorded as a result of reduction in income tax expense, net of tax			$ 165,000				76,000
Reduction to income tax expense - net, offset by other tax charges							$ 129,000
Reversal of regulatory liability for excess ADIT					106,000
Utility [Member] | Entergy Arkansas [Member]
Segment Reporting Information [Line Items]
Asset Impairment Charges						$ 78,000
Asset Impairment Charges, net of tax						$ 59,000
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Asset Impairment Charges								$ (37,283)	(163,464)	263,625
Reduction in income tax expense as a result of the resolution of the 2016-2018 IRS audit					$ 275,000
Corporate and Other [Member] | Indian Point Energy Center [Member]
Segment Reporting Information [Line Items]
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property				340,000
Reduction to income tax expense				$ 268,000
Corporate and Other [Member] | Palisades [Member]
Segment Reporting Information [Line Items]
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property		166,000
Reduction to income tax expense		$ 130,000
Employee Retention and Severances Expenses and Other Benefits-Related Costs [Member]
Segment Reporting Information [Line Items]
Restructuring Charges									3,000	12,000
Restructuring Reserve									$ 0	$ 37,000	$ 145,000