Rate And Regulatory Matters (Narrative - All Other) (Details)	1 Months Ended											2 Months Ended	3 Months Ended				6 Months Ended			12 Months Ended					24 Months Ended
	Jul. 31, 2025 USD ($)	Jun. 30, 2025 USD ($)	May 31, 2025 USD ($)	Apr. 30, 2025 USD ($)	Feb. 28, 2025 USD ($)	Dec. 31, 2024 USD ($)	Oct. 31, 2024 USD ($) MW kV	Aug. 31, 2024	Jul. 31, 2024 USD ($)	Jul. 31, 2020 USD ($)	Dec. 31, 2018 USD ($)	Oct. 31, 2025 USD ($)	Jun. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2026 USD ($)	Mar. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Mar. 31, 2024 USD ($)	Jan. 01, 2025	Dec. 31, 2023 USD ($)	Apr. 30, 2023 USD ($)
Regulatory Liability, Noncurrent		$ 3,659,163,000				$ 3,609,463,000							$ 3,659,163,000				$ 3,659,163,000	$ 3,609,463,000						$ 3,609,463,000
Regulatory Asset, Noncurrent		5,082,842,000				5,255,509,000							5,082,842,000				5,082,842,000	5,255,509,000						5,255,509,000
Asset Impairment Charges													0		$ 0		0		$ 131,775,000
Increase (Decrease) in Deferred Fuel Costs																	263,205,000		(134,953,000)
Deferred Fuel Cost		99,774,000				0							99,774,000				99,774,000	0						0
Entergy Arkansas [Member]
Regulatory Liability, Noncurrent		889,400,000				831,165,000							889,400,000				889,400,000	831,165,000						831,165,000
Regulatory Asset, Noncurrent		1,704,768,000				1,700,110,000							1,704,768,000				1,704,768,000	1,700,110,000						1,700,110,000
Payments for Legal Settlements											$ 135,000,000
Refund to customers, plus interest, associated with recalculated bandwidth remedy										$ 13,700,000
Asset Impairment Charges													0		$ 0		0		131,775,000
Increase (Decrease) in Deferred Fuel Costs																	33,234,000		(2,317,000)
Entergy Arkansas [Member] | Opportunity Sales [Member]
Regulatory Asset, Noncurrent																											$ 131,800,000
Asset Impairment Charges																$ 131,800,000
Asset Impairment Charges, net of tax																99,100,000
Entergy Louisiana [Member]
Regulatory Liability, Noncurrent		1,640,771,000				1,692,547,000							1,640,771,000				1,640,771,000	1,692,547,000						1,692,547,000
Regulatory Asset, Noncurrent		1,591,621,000				1,637,967,000							1,591,621,000				1,591,621,000	1,637,967,000						1,637,967,000
Increase (Decrease) in Deferred Fuel Costs																	92,390,000		(11,364,000)
Deferred Fuel Cost		84,372,000				0							84,372,000				84,372,000	0						0
Amount transfer from restricted escrow account as storm damage reserve					$ 33,500,000
Entergy Louisiana [Member] | Hurricane Francine
Total Restoration Costs For Repair and Replacement of Electrical System						183,600,000
Carrying costs associated with storm restoration costs						3,600,000
Exception to restoration costs to be recovered - carrying costs		1,800,000
Exception to restoration costs to be recovered - estimated invoices and incentive compensation		10,600,000
Entergy Louisiana [Member] | Deferred COVID-19 costs
Regulatory Asset, Noncurrent						47,800,000												47,800,000						47,800,000
Entergy Louisiana [Member] | Shorter-term financing interest earnings
Regulatory Liability, Noncurrent		48,900,000											48,900,000				48,900,000
Entergy Mississippi [Member]
Regulatory Liability, Noncurrent		63,582,000				59,544,000							63,582,000				63,582,000	59,544,000						59,544,000
Regulatory Asset, Noncurrent		473,715,000				525,847,000							473,715,000				473,715,000	525,847,000						525,847,000
Increase (Decrease) in Deferred Fuel Costs																	64,303,000		(41,104,000)
Entergy New Orleans [Member]
Regulatory Liability, Noncurrent		245,127,000				260,312,000							245,127,000				245,127,000	260,312,000						260,312,000
Regulatory Asset, Noncurrent		122,938,000				133,261,000							122,938,000				122,938,000	133,261,000						133,261,000
Increase (Decrease) in Deferred Fuel Costs																	4,203,000		51,000
Deferred Fuel Cost		5,599,000				0							5,599,000				5,599,000	0						0
Entergy Texas [Member]
Regulatory Liability, Noncurrent		17,790,000				18,705,000							17,790,000				17,790,000	18,705,000						18,705,000
Regulatory Asset, Noncurrent		489,583,000				549,708,000							489,583,000				489,583,000	549,708,000						549,708,000
Increase (Decrease) in Deferred Fuel Costs																	69,075,000		$ (80,220,000)
Deferred Fuel Cost		9,804,000				$ 0							$ 9,804,000				9,804,000	$ 0						$ 0
Energy Cost Recovery Rider [Member] | Entergy Arkansas [Member]
Energy Cost Recovery Rider Rate Per kWh				$ 0.01333																			$ 0.00882
Energy Cost Recovery Rider [Member] | Entergy Arkansas [Member] | Subsequent Event [Member]
Requested Energy Cost Recovery Rider Rate Per kWh																					$ 0.01333
2024 Formula Rate Plan Filing [Member] | Entergy Louisiana [Member]
Public Utilities, Requested Return on Equity, Percentage			9.70%
Basis points bandwidth above and below midpoint return on common equity			40
Earned return on common equity			9.98%
Public Utilities, Approved Rate Increase (Decrease), Amount			$ 2,000,000
State Effective Income Tax Rate, Percent						7.50%												7.50%						7.50%		5.50%
2024 Formula Rate Plan Filing [Member] | Entergy Louisiana [Member] | Subsequent Event [Member]
Customer credit for ROE above allowed ROE												$ 31,900,000
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] | Hurricane Francine
Public Utilities, Interim Rate Increase (Decrease), Amount					17,800,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request | Entergy Louisiana [Member] | System Energy Settlement with the LPSC
Public Utilities, Interim Rate Increase (Decrease), Amount						$ 25,100,000
Distribution Cost Recovery Factor Rider [Member] | Entergy Texas [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount				77,800,000
Incremental annual revenues				29,300,000
Transmission Cost Recovery Factor Rider | Entergy Texas [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount							$ 9,700,000
2023 Formula Rate Plan Filing | Entergy Louisiana [Member]
Public Utilities, Requested Return on Equity, Percentage								9.70%
Basis points bandwidth above and below midpoint return on common equity								40
2023 Formula Rate Plan Filing | Entergy Louisiana [Member] | Hurricane Francine
Public Utilities, Interim Rate Increase (Decrease), Amount					$ 17,800,000
2025 Formula Rate Plan Filing | Entergy Arkansas [Member]
Netting Adjustment																								$ 48,800,000
Earned return on common equity																								7.71%
2025 Formula Rate Plan Filing | Entergy Arkansas [Member] | Subsequent Event [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount	$ 117,700,000
Projected Revenue Deficiency																				$ 68,900,000
Annual revenue constraint per rate class percentage	4.00%
Earned return on common equity																				8.45%
2025 Formula Rate Plan Filing | Entergy Arkansas [Member] | Subsequent Event [Member] | Maximum [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount	$ 92,300,000
2025 Formula Rate Plan Filing | Entergy Mississippi [Member]
Public Utilities, Requested Return on Equity, Percentage					7.64%
Public Utilities, Requested Rate Increase (Decrease), Amount		$ 0			$ 0																			$ 0
Public Utilities, Interim Rate Increase (Decrease), Amount					$ 135,000
Earned return on rate base		7.68%																						7.55%
2025 Formula Rate Plan Filing | Entergy New Orleans [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount				$ 13,800,000
Public Utilities, Approved Return on Equity, Percentage				9.35%
Earned return on equity				10.98%
Public Utilities, Requested Rate Increase (Decrease), Amount, Adjusted				$ 8,600,000
2025 Formula Rate Plan Filing | Entergy New Orleans [Member] | Subsequent Event [Member]
Proposed formula rate plan rate mitigation through offsets to regulatory liabilities	4,400,000
Requested reduction to requested rate decrease	7,200,000
Proposed reduction in customer late fees	$ 4,100,000
Additional generation and transmission resources | Entergy Louisiana [Member]
Measurement of electrical voltage for new transmission line | kV							500
Measurement of electrical voltage for substation upgrades | kV							500
Additional generation and transmission resources | Entergy Louisiana [Member] | Future additions contributed by customer
Generation Capacity | MW							1,500
Additional generation and transmission resources | Entergy Louisiana [Member] | Three new combined cycle combustion turbine generation resources
Generation Capacity | MW							2,262
Grand Gulf Sale-leaseback Renewal Complaint and Uncertain Tax Position Rate Base Issue [Member] | Entergy Mississippi [Member]
Allocated sale-leaseback annual renewal costs																	$ 5,700,000
Fuel Reconciliation | Entergy Texas [Member]
Increase (Decrease) in Deferred Fuel Costs																									$ 1,600,000,000
Deferred Fuel Cost																$ 30,000,000									$ 30,000,000
Interim Facilities Rate Adjustments | Entergy Mississippi [Member]
Public Utilities, Interim Rate Increase (Decrease), Amount																		$ 8,700,000
Interim Facilities Rate Adjustments | Entergy Mississippi [Member] | Subsequent Event [Member]
Public Utilities, Interim Rate Increase (Decrease), Amount																					$ 1,000,000	$ 46,700,000
Deferred COVID-19 costs | Entergy Louisiana [Member]
Low interest debt																												$ 1,600,000,000