Rate And Regulatory Matters Rate and Regulatory Matters (Details of Other Regulatory Liabilities Included in Entergy Corporation and Subsidiaries) (Details) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2017
Regulatory Liability [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%		21.00%				35.00%	35.00%
Regulatory Liability, Noncurrent			$ 3,116,926	$ 2,324,590
Increase (Decrease) in Regulatory Liabilities			(463,805)	266,559	$ (43,631)
Unrealized Gain on Nuclear Decommissioning Trust Funds [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			1,826,200	1,237,900
Asset Retirement Obligation Costs [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			44,300	43,500
Vidalia Purchased Power Agreement [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			82,500	95,400
Increase (Decrease) in Regulatory Liabilities		$ 30,500
Other Regulatory Assets (Liabilities) [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			149,500	101,900
Retail Rate Over-Recovery [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			138,000	180,200
Deferred Tax Equity Partnership Earnings [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			57,900	43,800
Entergy Arkansas’s Accumulated Accelerated Grand Gulf Amortization [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			44,400	44,400
Customer sharing from resolution of the 2016-2018 IRS audit [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			98,000	0
Refund from System Energy settlement with the APSC [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			93,000	0
Securitization financing savings obligation [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			405,200	327,700
Complaints against System Energy [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			177,900	249,800
Entergy Louisiana [Member]
Regulatory Liability [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent						21.00%
Regulatory Liability, Noncurrent			1,407,689	1,037,962
Increase (Decrease) in Regulatory Liabilities			(225,645)	4,783	16,478
Entergy Louisiana [Member] | Unrealized Gain on Nuclear Decommissioning Trust Funds [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			644,000	438,900
Entergy Louisiana [Member] | Asset Retirement Obligation Costs [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			44,300	43,500
Entergy Louisiana [Member] | Vidalia Purchased Power Agreement [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			82,500	95,400
Entergy Louisiana [Member] | Other Regulatory Assets (Liabilities) [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			24,100	44,800
Entergy Louisiana [Member] | Retail Rate Over-Recovery [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			86,400	87,700
Entergy Louisiana [Member] | Customer sharing from resolution of the 2016-2018 IRS audit [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			38,000	0
Entergy Louisiana [Member] | Sale-leaseback and depreciation refunds [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			14,100	0
Entergy Louisiana [Member] | Securitization financing savings obligation [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			405,200	327,700
Entergy Louisiana [Member] | Short-term financing interest earnings [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			36,800	0
Entergy Louisiana [Member] | Hurricane Ida insurance proceeds [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			32,300	0
Entergy Arkansas [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			759,181	475,758
Increase (Decrease) in Regulatory Liabilities			(240,762)	264,054	(21,066)
Entergy Arkansas [Member] | Unrealized Gain on Nuclear Decommissioning Trust Funds [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			621,600	428,200
Entergy Arkansas [Member] | Internal Restructuring Guaranteed Credits to Customers [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			6,600	13,200
Entergy Arkansas [Member] | Other Regulatory Assets (Liabilities) [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			0	8,100
Entergy Arkansas [Member] | Retail Rate Over-Recovery [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			10,600	3,900
Entergy Arkansas [Member] | Deferred Tax Equity Partnership Earnings [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			27,400	22,400
Entergy Arkansas [Member] | Refund from System Energy settlement with the APSC [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			93,000	0
Entergy Mississippi [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			33,696	79,865
Increase (Decrease) in Regulatory Liabilities			59,513	(20,165)	(21,930)
Entergy Mississippi [Member] | Other Regulatory Assets (Liabilities) [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			800	300
Entergy Mississippi [Member] | Retail Rate Over-Recovery [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			2,400	58,200
Entergy Mississippi [Member] | Deferred Tax Equity Partnership Earnings [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			30,500	21,400
Entergy New Orleans [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			90,434	20,735
Increase (Decrease) in Regulatory Liabilities			(66,022)	8,639	(4,985)
Entergy New Orleans [Member] | Other Regulatory Assets (Liabilities) [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			500	1,200
Entergy New Orleans [Member] | Retail Rate Over-Recovery [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			20,100	19,500
Entergy New Orleans [Member] | Customer sharing from resolution of the 2016-2018 IRS audit [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			60,000	0
Entergy New Orleans [Member] | Sale-leaseback and depreciation refunds [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			9,800	0
Entergy Texas [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			43,013	45,247
Increase (Decrease) in Regulatory Liabilities			20,122	30,499	28,747
Entergy Texas [Member] | Other Regulatory Assets (Liabilities) [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			2,400	0
Entergy Texas [Member] | Retail Rate Over-Recovery [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			23,800	10,900
Entergy Texas [Member] | Retail refunds [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			6,200	25,500
Entergy Texas [Member] | Securitization Over-Recovery [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			300	8,800
Entergy Texas [Member] | 2022 Rate Case Settlement Relate Back [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			10,300	0
System Energy [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			782,912	665,024
Increase (Decrease) in Regulatory Liabilities			(11,009)	(21,252)	$ (40,884)
System Energy [Member] | Unrealized Gain on Nuclear Decommissioning Trust Funds [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			560,600	370,800
System Energy [Member] | Entergy Arkansas’s Accumulated Accelerated Grand Gulf Amortization [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			44,400	44,400
System Energy [Member] | Unit Power Sales Agreement Complaint [Member]
Regulatory Liability [Line Items]
Regulatory Liability, Noncurrent			177,900	$ 249,800
Regulatory Liability, Current			$ 103,500