Commitments And Contingencies (Narrative) (Details)		1 Months Ended										3 Months Ended	12 Months Ended												84 Months Ended	120 Months Ended	180 Months Ended
	Jan. 01, 2018	Aug. 31, 2023 USD ($)	Jul. 31, 2023 USD ($)	Mar. 31, 2023 USD ($)	Oct. 31, 2021 USD ($)	Aug. 31, 2021 USD ($)	Jan. 31, 2021 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Feb. 28, 2014 USD ($)	Nov. 30, 2013 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($) reactor claim program	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2031 USD ($)	Oct. 01, 2012 USD ($)	Dec. 31, 2026 USD ($)	Jan. 01, 2024 USD ($)
Commitments And Contingencies [Line Items]
Number of Financial Protection Programs | program														2
Maximum Retrospective Insurance Premium Obligation Per Reactor Per Incident														$ 165,900,000
Maximum retrospective insurance premium obligation per incident														829,600,000
Maximum retrospective premium per year per incident per nuclear power reactor														24,700,000
Total insurance coverage available including American Nuclear Insurers coverage and Secondary Financial Protection program coverage														$ 16,300,000,000
Number Of Nuclear Reactors Included In Secondary Financial Protection Program | reactor														95
Total secondary layer insurance coverage under Secondary Financial Protection program														$ 15,800,000,000
Maximum Recovery Nuclear Insurance Policies For Property Damage Caused By Terrorist Act														3,240,000,000
Maximum Conventional Property Insurance Coverage On Each And Every Loss Basis														400,000,000
Conventional Property Insurance, Minimum Value Of Assets Covered														5,000,000
Terrorism insurance coverage for conventional property														$ 400,000,000
Spent fuel fee until the DOE complies with the Nuclear Waste Policy Act of 1982 or Congress enacts an alternative waste disposal plan											$ 0
Percentage of Weekly Indemnity Paid After Deductible Second Period has Passed														80.00%
Percentage of Weekly Indemnity Paid After Deductible Final Period has Passed														80.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%													21.00%				35.00%		35.00%
Increase (Decrease) in Regulatory Liabilities														$ 463,805,000	$ (266,559,000)	$ 43,631,000
Percentage of Weekly Indemnity Paid After Deductible First Period has Passed														100.00%
Asset Impairment Charges														$ 42,679,000	(163,464,000)	263,625,000
Operational Perils [Member]
Commitments And Contingencies [Line Items]
Self-insured retention														20,000,000
Earthquake and Flood [Member]
Commitments And Contingencies [Line Items]
Maximum Conventional Property Insurance Coverage On Each And Every Loss Basis														400,000,000
Self-insured retention														40,000,000
Named Windstorm and Associated Storm Surge [Member]
Commitments And Contingencies [Line Items]
Maximum Conventional Property Insurance Coverage On Each And Every Loss Basis														125,000,000
Self-insured retention														40,000,000
ANO and Grand Gulf [Member] | Flood [Member]
Commitments And Contingencies [Line Items]
Primary Insurance Layer Conditions Of Coverage														$ 500,000,000
Palisades [Member]
Commitments And Contingencies [Line Items]
Damages awarded for previously capitalized costs							$ 16,000,000
Damages awarded for previously recorded operation and maintenance							7,000,000
Reduction of previously recorded deprecation expense							9,000,000
Litigation Settlement, Amount Awarded from Other Party							23,000,000
Damages awarded for costs previously recorded as plant							$ 16,000,000
Grand Gulf [Member]
Commitments And Contingencies [Line Items]
Ownership Percentage By Non Affiliated Company														10.00%
Indian Point [Member]
Commitments And Contingencies [Line Items]
Damages awarded for previously recorded operation and maintenance					$ 47,000,000
Damages awarded for previously recorded taxes other than income taxes					4,000,000
Litigation Settlement, Amount Awarded from Other Party			$ 59,000,000		83,000,000
Damages awarded for costs previously recorded as plant			6,000,000		$ 32,000,000
Damages awarded for costs previously recorded as other operation and maintenance expense			15,000,000
Damages awarded for costs previously recorded as taxes other than income taxes			1,000,000
Proceeds from Legal Settlements		$ 40,000,000
Damages awarded for costs previously recorded as spending on the asset retirement obligation			$ 18,000,000
Pilgrim [Member]
Commitments And Contingencies [Line Items]
Litigation Settlement, Amount Awarded from Other Party						$ 37,600,000
Subsequent Event [Member]
Commitments And Contingencies [Line Items]
American Nuclear Insurers public liability insurance coverage per operating reactor																												$ 500,000,000
Utility [Member]
Commitments And Contingencies [Line Items]
Property Insurance Deductible														$ 20,000,000
Asset Impairment Charges														79,962,000	0	0
Utility [Member] | Property Insurance [Member]
Commitments And Contingencies [Line Items]
Property damage insurance limit per occurrence														1,060,000,000.00
Utility [Member] | Earthquake [Member]
Commitments And Contingencies [Line Items]
Primary Insurance Layer Conditions Of Coverage														500,000,000
Utility [Member] | Wind [Member]
Commitments And Contingencies [Line Items]
Property Insurance Deductible														$ 10,000,000
Percentage of Additional Property Insurance Deductible for Loss in Excess of Deductible														10.00%
Utility [Member] | Asbestos Issue [Member]
Commitments And Contingencies [Line Items]
Loss Contingency, Pending Claims, Number | claim														195
Loss Contingency, Number of Plaintiffs | claim														345
Utility [Member] | River Bend and Waterford 3 [Member] | Flood [Member]
Commitments And Contingencies [Line Items]
Property Insurance Deductible														$ 10,000,000
Percentage of Additional Property Insurance Deductible for Loss in Excess of Deductible														10.00%
Utility [Member] | Maximum [Member] | Wind [Member]
Commitments And Contingencies [Line Items]
Property Insurance Deductible														$ 50,000,000
Utility [Member] | Maximum [Member] | River Bend and Waterford 3 [Member] | Flood [Member]
Commitments And Contingencies [Line Items]
Property Insurance Deductible														$ 50,000,000
Entergy Mississippi [Member]
Commitments And Contingencies [Line Items]
Percentage Of Capacity And Energy Agreed To Sell From Variable Interest Entity To Other Subsidiaries														33.00%
Average Monthly Payments Under Unit Power Sales Agreement														$ 16,300,000
Purchased Percentage Of Capacity And Energy Based On Agreement														31.30%
Increase (Decrease) in Regulatory Liabilities														$ (59,513,000)	20,165,000	21,930,000
Proceeds from Legal Settlements								$ 36,000,000
Entergy Texas [Member]
Commitments And Contingencies [Line Items]
Increase (Decrease) in Regulatory Liabilities														$ (20,122,000)	(30,499,000)	(28,747,000)
Proceeds from Legal Settlements								33,000,000
System Energy [Member]
Commitments And Contingencies [Line Items]
Number of Nuclear Power Reactors | reactor														1
Increase (Decrease) in Regulatory Liabilities														$ 11,009,000	21,252,000	40,884,000
Entergy New Orleans [Member]
Commitments And Contingencies [Line Items]
Maximum Conventional Property Insurance Coverage On Each And Every Loss Basis														$ 50,000,000
Percentage Of Capacity And Energy Agreed To Sell From Variable Interest Entity To Other Subsidiaries														17.00%
Average Monthly Payments Under Unit Power Sales Agreement														$ 8,100,000
Purchased Percentage Of Capacity And Energy Based On Agreement														24.70%
Increase (Decrease) in Regulatory Liabilities														$ 66,022,000	(8,639,000)	4,985,000
Proceeds from Legal Settlements								7,000,000
Entergy Louisiana [Member]
Commitments And Contingencies [Line Items]
Payments Made Under Purchased Power Agreement														$ 100,400,000	117,200,000	128,500,000
Required Energy For Production In Percentage														94.00%
Credit to rates agreed to by subsidiary for each year under settlement related to tax benefits from the tax treatment of Purchased Power Agreement																										$ 11,000,000
Number of years for which credit to rates agreed to by subsidiary under settlement related to tax benefits from the tax treatment of Purchased Power Agreement																										10 years
Number of Nuclear Power Reactors | reactor														2
Percentage Of Capacity And Energy Agreed To Sell From Variable Interest Entity To Other Subsidiaries														14.00%
Average Monthly Payments Under Unit Power Sales Agreement														$ 6,700,000
Purchased Percentage Of Capacity And Energy Based On Agreement														26.90%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent																	21.00%
Increase (Decrease) in Regulatory Liabilities														$ 225,645,000	(4,783,000)	(16,478,000)
Proceeds from Legal Settlements								$ 59,000,000
Entergy Louisiana [Member] | River Bend [Member]
Commitments And Contingencies [Line Items]
Damages awarded for previously recorded operation and maintenance						4,000,000
Damages awarded for previously recorded nuclear fuel expense						8,000,000
Litigation Settlement, Amount Awarded from Other Party						21,000,000
Damages awarded for costs previously recorded as plant						$ 9,000,000
Entergy Louisiana [Member] | Subsequent Event [Member]
Commitments And Contingencies [Line Items]
Estimated Payments Under Purchased Power Agreement in Next Twelve Months													$ 137,400,000
Estimated Payments Under Purchased Power Agreement in Year Two and Thereafter																									$ 958,800,000
Credit to rates agreed to by subsidiary for each year under settlement related to tax benefits from the tax treatment of Purchased Power Agreement																											$ 20,235,000
Number of years for which credit to rates agreed to by subsidiary under settlement related to tax benefits from the tax treatment of Purchased Power Agreement																											15 years
Entergy Arkansas [Member]
Commitments And Contingencies [Line Items]
Estimated Cost To Restore ANO To Service																								$ 95,000,000
Proceeds From Insurance Settlement, Operating and Investing Activities																							$ 50,000,000
Number of Nuclear Power Reactors | reactor														2
Percentage Of Capacity And Energy Agreed To Sell From Variable Interest Entity To Other Subsidiaries														36.00%
Average Monthly Payments Under Unit Power Sales Agreement														$ 17,900,000
Purchased Percentage Of Capacity And Energy Based On Agreement														17.10%
Incremental NRC Inspection Costs																						$ 53,000,000
NRC inspection and performance improvement costs																				$ 7,000,000	$ 44,000,000
Litigation Settlement, Amount Awarded from Other Party																			$ 21,000,000
Increase (Decrease) in Regulatory Liabilities														$ 240,762,000	(264,054,000)	21,066,000
Asset Impairment Charges														$ 78,434,000	$ 0	$ 0
Asset impairment charge for undepreciated balance in capital costs												$ 9,500,000
Entergy Arkansas [Member] | Deferred Fuel Costs [Member]
Commitments And Contingencies [Line Items]
Asset Impairment Charges												68,900,000
Entergy Arkansas [Member] | ANO [Member]
Commitments And Contingencies [Line Items]
Deferred Fuel and Purchased Energy Costs Excluded From Revised Energy Cost Rate										$ 65,900,000
Litigation Settlement, Amount Awarded from Other Party				$ 41,000,000
Damages awarded for costs previously recorded as plant				18,000,000
Damages awarded for costs previously recorded as other operation and maintenance expense				10,000,000
Damages awarded for costs previously recorded as nuclear fuel expense				8,000,000
Damages awarded for costs previously recorded as materials and supplies				3,000,000
Damages awarded for costs previously recorded as taxes other than income taxes				$ 2,000,000
Entergy Arkansas [Member] | Utility [Member]
Commitments And Contingencies [Line Items]
Asset Impairment Charges												$ 78,000,000
Vidalia Purchased Power Agreement [Member]
Commitments And Contingencies [Line Items]
Increase (Decrease) in Regulatory Liabilities									$ (30,500,000)