Rate And Regulatory Matters (Narrative - All Other) (Details)	1 Months Ended											3 Months Ended				6 Months Ended	9 Months Ended		12 Months Ended				24 Months Ended
	Oct. 31, 2024 USD ($)	Sep. 30, 2024 USD ($)	Aug. 31, 2024 USD ($)	Jul. 31, 2024 USD ($)	Jun. 30, 2024 USD ($) kWh	Apr. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Feb. 29, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jul. 31, 2020 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2024 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2025 USD ($)	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Mar. 31, 2024 USD ($)	Jan. 01, 2025
Regulatory Liability, Noncurrent		$ 3,684,331,000							$ 3,116,926,000			$ 3,684,331,000					$ 3,684,331,000					$ 3,116,926,000
Regulatory Asset, Noncurrent		5,487,360,000							5,669,404,000			5,487,360,000					5,487,360,000					5,669,404,000
Asset Impairment Charges												0			$ 38,078,000		131,775,000	$ 38,078,000
Increase (Decrease) in Deferred Fuel Costs																	(208,363,000)	(620,440,000)
Deferred Fuel Cost		6,774,000							169,967,000			6,774,000					6,774,000					169,967,000
Entergy Arkansas [Member]
Regulatory Liability, Noncurrent		803,934,000							759,181,000			803,934,000					803,934,000					759,181,000
Regulatory Asset, Noncurrent		$ 1,708,042,000							1,885,361,000			1,708,042,000					1,708,042,000					1,885,361,000
Payments for Legal Settlements											$ 135,000,000
Refund to customers, plus interest, associated with recalculated bandwidth remedy										$ 13,700,000
Asset Impairment Charges												$ 0			$ 78,434,000		131,775,000	78,434,000
Increase (Decrease) in Deferred Fuel Costs																	$ 16,795,000	(165,982,000)
Percentage of capacity and energy purchases under Unit Power Sales Agreement		36.00%										36.00%					36.00%
Entergy Arkansas [Member] | Opportunity Sales [Member]
Regulatory Asset, Noncurrent									131,800,000													131,800,000
Asset Impairment Charges														$ 131,800,000
Asset Impairment Charges, net of tax														99,100,000
Entergy Arkansas [Member] | Subsequent Event [Member]
Percentage of purchases under MSS-4 replacement tariff																								2.43%
Entergy Louisiana [Member]
Regulatory Liability, Noncurrent		$ 1,791,992,000							1,407,689,000			$ 1,791,992,000					$ 1,791,992,000					1,407,689,000
Regulatory Asset, Noncurrent		1,741,585,000							1,648,852,000			1,741,585,000					1,741,585,000					1,648,852,000
Increase (Decrease) in Deferred Fuel Costs																	(61,893,000)	(133,090,000)
Deferred Fuel Cost		$ 0							24,800,000			$ 0					$ 0					24,800,000
Percentage of capacity and energy purchases under Unit Power Sales Agreement		14.00%										14.00%					14.00%
Entergy Louisiana [Member] | Subsequent Event [Member]
Percentage of capacity and energy purchases under Unit Power Sales Agreement																								14.00%
Entergy Mississippi [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount							$ 5,200,000
Regulatory Liability, Noncurrent		$ 60,027,000							33,696,000			$ 60,027,000					$ 60,027,000					33,696,000
Regulatory Asset, Noncurrent		$ 549,027,000							579,076,000			$ 549,027,000					549,027,000					579,076,000
Monthly storm damage provision								$ 1,750,000
Storm Damage Provision Balance							70,000,000	15,000,000	15,000,000					70,000,000							$ 70,000,000	15,000,000	$ 70,000,000
Storm damage provision balance at which collections will resume							60,000,000	10,000,000
Disbursement from storm reserve rescrow									34,500,000
Increase (Decrease) in Deferred Fuel Costs																	$ (13,938,000)	(215,892,000)
Percentage of capacity and energy purchases under Unit Power Sales Agreement		33.00%										33.00%					33.00%
Entergy New Orleans [Member]
Regulatory Liability, Noncurrent		$ 262,063,000							90,434,000			$ 262,063,000					$ 262,063,000					90,434,000
Regulatory Asset, Noncurrent		172,228,000							182,367,000			172,228,000					172,228,000					182,367,000
Increase (Decrease) in Deferred Fuel Costs																	626,000	(8,025,000)
Deferred Fuel Cost		$ 6,774,000							6,148,000			$ 6,774,000					$ 6,774,000					6,148,000
Percentage of capacity and energy purchases under Unit Power Sales Agreement		17.00%										17.00%					17.00%
Entergy New Orleans [Member] | Credits expected to be shared with customers from resolution of the 2016-2018 IRS audit [Member]
Regulatory Liability, Noncurrent						$ 138,000,000	138,000,000		60,000,000					138,000,000							138,000,000	60,000,000	138,000,000
Entergy Texas [Member]
Regulatory Liability, Noncurrent		$ 27,567,000							43,013,000			$ 27,567,000					$ 27,567,000					43,013,000
Regulatory Asset, Noncurrent		575,619,000							596,606,000			575,619,000					575,619,000					596,606,000
Increase (Decrease) in Deferred Fuel Costs																	(149,954,000)	$ (97,451,000)
Deferred Fuel Cost		0							139,019,000			0					$ 0					139,019,000
Energy Cost Recovery Rider [Member] | Entergy Arkansas [Member]
Energy Cost Recovery Rider Rate Per kWh						0.00882															0.01883
Credit for recovery attributed to net metering costs														9,000,000
Adjustment to over-recovery balance							$ 43,700,000							43,700,000							43,700,000		43,700,000
Energy Cost Recovery Rider [Member] | Entergy Arkansas [Member] | Subsequent Event [Member]
Requested Energy Cost Recovery Rider Rate Per kWh																				$ 0.00882
2024 Formula Rate Plan Filing [Member] | Entergy Arkansas [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount				$ 102,600,000
Annual revenue constraint per rate class percentage				4.00%
Netting Adjustment																						$ 33,100,000
Earned return on common equity																						7.48%
2024 Formula Rate Plan Filing [Member] | Entergy Arkansas [Member] | Maximum [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount				$ 82,600,000
2024 Formula Rate Plan Filing [Member] | Entergy Arkansas [Member] | Subsequent Event [Member]
Projected Revenue Deficiency																			$ 69,500,000
Earned return on common equity																			8.43%
2024 Formula Rate Plan Filing [Member] | Entergy Arkansas [Member] | Subsequent Event [Member] | Maximum [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount	$ 86,800,000
2024 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member]
Public Utilities, Requested Return on Equity, Percentage							7.10%
Public Utilities, Requested Rate Increase (Decrease), Amount							$ 63,400,000
Public Utilities, Interim Rate Increase (Decrease), Amount						$ 32,600,000	0
Annual depreciation expense increase								$ 55,200,000
Earned return on rate base					6.08%																	6.81%
Public Utilities, Approved Rate Increase (Decrease), Amount					$ 64,600,000																	$ 300,000
Regulatory credits					7,300,000
2024 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member] | Residential [Member]
Customer charge					$ 31.82
Average customer usage | kWh					1,000
2024 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member] | General service
Customer charge					$ 53.10
2024 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member] | Maximum [Member]
Cap on retail revenues in look-back filing						0.02
2024 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member] | Subsequent Event [Member]
Public Utilities, Interim Rate Increase (Decrease), Amount																$ 8,700,000
2024 Formula Rate Plan Filing [Member] | Entergy New Orleans [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount						$ 12,600,000
Public Utilities, Approved Return on Equity, Percentage						9.35%
Public Utilities, Approved Rate Increase (Decrease), Amount		11,200,000
Requested reduction to formula rate plan revenues resulting from alleged errors				1,600,000
2024 Formula Rate Plan Filing [Member] | Entergy New Orleans [Member] | Natural Gas, US Regulated [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount						$ 5,600,000
Public Utilities, Approved Rate Increase (Decrease), Amount		5,400,000
Earned return on equity						5.87%
2024 Formula Rate Plan Filing [Member] | Entergy New Orleans [Member] | Electricity, US Regulated [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount						$ 7,000,000
Public Utilities, Approved Rate Increase (Decrease), Amount		5,800,000
Earned return on equity						8.66%
Grand Gulf Credit Rider [Member] | Entergy Arkansas [Member]
Refund to retail customers				$ 100,600,000								$ 92,300,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request | Entergy Louisiana [Member]
Public Utilities, Requested Return on Equity, Percentage			9.70%
Public Utilities, Requested Rate Increase (Decrease), Amount			$ 120,000,000
Customer rate credits			$ 184,000,000
Expenses reflecting effects of agreement in principle													$ 151,000,000
Expenses reflecting effects of agreement in principle, net of tax													$ 111,000,000
Public Utilities, Approved Return on Equity, Percentage			9.50%
Basis points bandwidth above and below midpoint return on common equity			40
Increase in nuclear depreciation rates			$ 15,000,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request | Entergy Louisiana [Member] | System Energy Settlement with the LPSC
Customer rate credits			75,500,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request | Entergy Louisiana [Member] | Formula Rate Plan Global Settlement
Customer rate credits			5,800,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request | Entergy Louisiana [Member] | Credits expected to be shared with customers from resolution of the 2016-2018 IRS audit [Member]
Regulatory Liability, Noncurrent									$ 38,000,000													$ 38,000,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request | Entergy Louisiana [Member] | Maximum [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount			140,000,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request | Entergy Louisiana [Member] | Maximum [Member] | 2023
Public Utilities, Requested Rate Increase (Decrease), Amount			350,000,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request | Entergy Louisiana [Member] | Maximum [Member] | 2024
Public Utilities, Requested Rate Increase (Decrease), Amount			375,000,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request | Entergy Louisiana [Member] | Maximum [Member] | 2025
Public Utilities, Requested Rate Increase (Decrease), Amount			$ 400,000,000
Distribution Cost Recovery Factor Rider [Member] | Entergy Texas [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount		48,900,000			$ 40,300,000
Incremental annual revenues		$ 8,600,000
Fuel Reconciliation | Entergy Texas [Member]
Increase (Decrease) in Deferred Fuel Costs																							1,600,000,000
Deferred Fuel Cost							$ 30,000,000							$ 30,000,000							$ 30,000,000		$ 30,000,000
Transmission Cost Recovery Factor Rider | Entergy Texas [Member] | Subsequent Event [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount	$ 9,700,000
Grand Gulf Capacity Filing | Entergy Arkansas [Member] | Subsequent Event [Member]
Percentage of purchases under MSS-4 replacement tariff																								2.43%
Grand Gulf Capacity Filing | Entergy Louisiana [Member] | Subsequent Event [Member]
Percentage of capacity and energy purchases under Unit Power Sales Agreement																								14.00%
2023 Formula Rate Plan Filing | Entergy Louisiana [Member]
Public Utilities, Requested Return on Equity, Percentage			9.70%
Public Utilities, Requested Rate Increase (Decrease), Amount			$ 120,000,000
Basis points bandwidth above and below midpoint return on common equity			40
One-time incremental net decrease			$ 101,800,000