Commitments And Contingencies (Narrative) (Details)			1 Months Ended										3 Months Ended		6 Months Ended	12 Months Ended										60 Months Ended	120 Months Ended	180 Months Ended
	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2025 USD ($) reactor claim	Mar. 31, 2025 USD ($)	Nov. 30, 2024 USD ($)	Oct. 31, 2024 USD ($)	Aug. 31, 2024 USD ($)	Aug. 31, 2023 USD ($)	Jul. 31, 2023 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2017 USD ($)	Nov. 30, 2013 USD ($)	Sep. 30, 2025 unit	Sep. 30, 2023 USD ($)	Jun. 30, 2025 unit	Dec. 31, 2026 USD ($)	Dec. 31, 2025 USD ($) reactor plaintiff program claim	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2018 USD ($)	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 ($)	Dec. 31, 2026 USD ($)	Oct. 01, 2025	Jan. 01, 2025	Feb. 28, 2014 USD ($)
Commitments And Contingencies [Line Items]
Number of levels of nuclear liability insurance coverage | program																	2
Amount of private liability insurance per nuclear operating reactor			$ 500,000,000														$ 500,000,000
Maximum retrospective insurance premium obligation per reactor per incident			165,900,000														165,900,000
Maximum retrospective insurance premium obligation per incident			829,600,000														829,600,000
Maximum retrospective premium per year per incident per nuclear power reactor			$ 24,700,000														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														95
Amount of secondary financial protection per incident per nuclear power reactor accident																	$ 15,800,000,000
Property damage insurance limit per occurrence at each plant			$ 1,060,000,000.00														1,060,000,000.00
Maximum recovery under nuclear insurance policies for property damage caused by act of terrorism																	3,240,000,000
Non-nuclear property insurance coverage			400,000,000														400,000,000
Self-insured retention			20,000,000														20,000,000
Non-nuclear property insurance, minimum value of assets covered			5,000,000														5,000,000
Terrorism insurance coverage for conventional property			400,000,000														$ 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 for the final payment period for nuclear loss																	80.00%
Percentage of weekly indemnity paid for the final payment period for non-nuclear loss																	60.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	35.00%															21.00%	21.00%	21.00%
Increase (Decrease) in Regulatory Liabilities																	$ 180,811,000	$ 660,559,000	$ 463,805,000
Property insurance deductible			20,000,000														$ 20,000,000
Percentage of weekly indemnity paid for the initial payment period																	100.00%
Asset Impairment Charges																	$ 12,795,000	107,134,000	$ 42,679,000
Deferred Fuel Cost, Noncurrent			$ 172,201,000														$ 172,201,000	$ 172,201,000
number of nuclear reactors | reactor			5														5
Combustion turbine
Commitments And Contingencies [Line Items]
Long-Term Purchase Commitment, Minimum Quantity Required | unit													2		2
Long-Term Purchase Commitment, Milestones													two
Power island equipment
Commitments And Contingencies [Line Items]
Long-Term Purchase Commitment, Minimum Quantity Required | unit													21		15
Long-Term Purchase Commitment, Milestones													seven
Earthquake and Flood [Member]
Commitments And Contingencies [Line Items]
Non-nuclear property insurance coverage			$ 400,000,000														$ 400,000,000
Self-insured retention			40,000,000														40,000,000
Named Windstorm and Associated Storm Surge [Member]
Commitments And Contingencies [Line Items]
Non-nuclear property insurance coverage			135,000,000														135,000,000
Self-insured retention			40,000,000														40,000,000
Earthquake [Member]
Commitments And Contingencies [Line Items]
Property insurance layer conditions of coverage			500,000,000														500,000,000
Windstorm [Member]
Commitments And Contingencies [Line Items]
Property insurance deductible			$ 10,000,000														$ 10,000,000
Percentage of additional property insurance deductible for loss in excess of deductible			10.00%														10.00%
Asbestos Issue [Member]
Commitments And Contingencies [Line Items]
Loss Contingency, Pending Claims, Number | claim			180														180
Loss Contingency, Number of Plaintiffs | plaintiff																	330
ANO and Grand Gulf [Member] | Flood [Member]
Commitments And Contingencies [Line Items]
Property insurance layer conditions of coverage			$ 500,000,000														$ 500,000,000
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 costs previously recorded as other operation and maintenance expenses									$ 15,000,000
Litigation Settlement, Amount Awarded from Other Party									59,000,000
Damages awarded for costs previously recorded as plant									6,000,000
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
River Bend and Waterford 3 [Member] | Flood [Member]
Commitments And Contingencies [Line Items]
Property insurance deductible			$ 10,000,000														$ 10,000,000
Percentage of additional property insurance deductible for loss in excess of deductible			10.00%														10.00%
Entergy Nuclear Vermont Yankee [Member]
Commitments And Contingencies [Line Items]
Litigation Settlement, Amount Awarded from Other Party							$ 177,000,000
Proceeds from Legal Settlements					$ 127,000,000
Damages awarded for costs previously recorded as spending on the asset retirement obligation					20,000,000
Escrow Deposit					40,000,000
Entergy Nuclear Vermont Yankee [Member] | Notes Receivable
Commitments And Contingencies [Line Items]
Proceeds from Legal Settlements					107,000,000
Proceeds from Collection of Notes Receivable					82,000,000
Proceeds from Interest Received					25,000,000
Palisades [Member]
Commitments And Contingencies [Line Items]
Damages awarded for costs previously recorded as other operation and maintenance expenses						$ 3,000,000
Litigation Settlement, Amount Awarded from Other Party						7,000,000
Damages awarded for costs previously recorded as plant						$ 4,000,000
Proceeds from Legal Settlements				$ 7,000,000
Northstar Vermont Yankee, LLC
Commitments And Contingencies [Line Items]
Proceeds from Legal Settlements					$ 10,000,000
Maximum [Member] | Windstorm [Member]
Commitments And Contingencies [Line Items]
Property insurance deductible			$ 50,000,000														$ 50,000,000
Maximum [Member] | River Bend and Waterford 3 [Member] | Flood [Member]
Commitments And Contingencies [Line Items]
Property insurance deductible			$ 50,000,000														$ 50,000,000
Entergy Mississippi [Member]
Commitments And Contingencies [Line Items]
Percentage of capacity and energy purchases under Unit Power Sales Agreement			33.00%														33.00%												56.38%
Average monthly payments under unit power sales agreement																	$ 19,300,000
Percentage of obligation under the Availability Agreement			31.30%														31.30%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent																	21.00%	21.00%	21.00%
Increase (Decrease) in Regulatory Liabilities																	$ 74,631,000	$ 17,985,000	$ (59,513,000)
Entergy Texas [Member]
Commitments And Contingencies [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent																	21.00%	21.00%	21.00%
Increase (Decrease) in Regulatory Liabilities																	$ 84,253,000	$ (45,301,000)	$ (20,122,000)
Entergy Texas [Member] | Legend Power Station
Commitments And Contingencies [Line Items]
Cost to construct power station including initial purchase price			$ 1,450,000,000
Cost to purchase in-process construction project			$ 359,000,000
System Energy [Member]
Commitments And Contingencies [Line Items]
Number of nuclear power reactors | reactor			1														1
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent																	21.00%	21.00%	21.00%
Increase (Decrease) in Regulatory Liabilities																	$ 144,604,000	$ (37,713,000)	$ 11,009,000
Entergy New Orleans [Member]
Commitments And Contingencies [Line Items]
Percentage of capacity and energy purchases under Unit Power Sales Agreement			17.00%														17.00%												19.43%
Average monthly payments under unit power sales agreement																	$ 8,500,000
Percentage of obligation under the Availability Agreement			24.70%														24.70%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent																	21.00%	21.00%	21.00%
Increase (Decrease) in Regulatory Liabilities																	$ 26,316,000	$ 175,808,000	$ 66,022,000
Asset Impairment Charges																	12,795,000	0	0
Deferred Fuel Cost, Noncurrent			$ 4,080,000														4,080,000	4,080,000
Entergy Louisiana [Member]
Commitments And Contingencies [Line Items]
Payments Made Under Purchased Power Agreement																	$ 125,300,000	$ 116,800,000	$ 100,400,000
Required Energy For Production In Percentage																	94.00%
Number of years for customer rate credits																											10 years
Number of nuclear power reactors | reactor			2														2
Percentage of capacity and energy purchases under Unit Power Sales Agreement			14.00%														14.00%
Average monthly payments under unit power sales agreement																	$ 6,700,000
Percentage of obligation under the Availability Agreement			26.90%														26.90%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%																21.00%	21.00%	21.00%		35.00%
Increase (Decrease) in Regulatory Liabilities										$ 103,000,000							$ (110,727,000)	$ 452,731,000	$ 225,645,000
Customer rate credits																											$ 11,000,000
Deferred Fuel Cost, Noncurrent			$ 168,122,000														$ 168,122,000	$ 168,122,000
Entergy Louisiana [Member] | Entergy Mississippi [Member]
Commitments And Contingencies [Line Items]
Percentage of capacity and energy purchases under Unit Power Sales Agreement																														14.00%
Percentage of purchases under MSS-4 replacement tariff																														2.43%
Entergy Louisiana [Member] | Subsequent Event [Member]
Commitments And Contingencies [Line Items]
Estimated Payments Under Purchased Power Agreement in Next Twelve Months																$ 122,000,000.0
Estimated Payments Under Purchased Power Agreement in Year Two and Thereafter																										$ 610,600,000
Number of years for customer rate credits																												15 years
Customer rate credits																												$ 20,235,000
Entergy Arkansas [Member]
Commitments And Contingencies [Line Items]
Number of nuclear power reactors | reactor			2														2
Percentage of capacity and energy purchases under Unit Power Sales Agreement			36.00%														36.00%												24.19%
Average monthly payments under unit power sales agreement																	$ 15,800,000
Percentage of obligation under the Availability Agreement			17.10%														17.10%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent																	21.00%	21.00%	21.00%
Increase (Decrease) in Regulatory Liabilities																	$ 218,074,000	$ 97,049,000	$ 240,762,000
Asset Impairment Charges																	$ 0	$ 131,775,000	$ 78,434,000
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]
Cost of assessment, restoration of off-site power, site restoration, debris removal, and replacement of damaged property and equipment																									$ 95,000,000
Proceeds From Insurance Settlement, Operating and Investing Activities																								$ 50,000,000
Incremental NRC inspection costs																					$ 7,000,000	$ 44,000,000	$ 53,000,000
Damages awarded for costs previously recorded as other operation and maintenance expenses										10,000,000
Litigation Settlement, Amount Awarded from Other Party										41,000,000										$ 21,000,000
Damages awarded for costs previously recorded as plant										18,000,000
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
Asset Impairment Charges														9,500,000
Deferred Fuel Cost, Noncurrent																															$ 65,900,000
Entergy Arkansas [Member] | ANO [Member] | Deferred Fuel Costs [Member]
Commitments And Contingencies [Line Items]
Asset Impairment Charges														$ 68,900,000
Vidalia Purchased Power Agreement [Member] | Entergy Louisiana [Member]
Commitments And Contingencies [Line Items]
Increase (Decrease) in Regulatory Liabilities											$ (30,500,000)