Rate And Regulatory Matters (Regulatory Assets and Liabilities and Retail Rate Proceedings - Narrative) (Details)	1 Months Ended																																												2 Months Ended	3 Months Ended				6 Months Ended		12 Months Ended												24 Months Ended	36 Months Ended	120 Months Ended	180 Months Ended
	Jan. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)	Nov. 30, 2025 USD ($)	Oct. 31, 2025 USD ($)	Sep. 30, 2025 USD ($) MW	Aug. 31, 2025 USD ($)	Jul. 31, 2025 USD ($)	Jun. 30, 2025 USD ($)	May 31, 2025 USD ($)	Apr. 30, 2025 USD ($)	Feb. 28, 2025 USD ($)	Jan. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Nov. 30, 2024 USD ($)	Oct. 31, 2024 USD ($) MW kV	Sep. 30, 2024 USD ($)	Aug. 31, 2024 USD ($)	Jul. 31, 2024 USD ($)	Jun. 30, 2024 USD ($) kWh	Apr. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Feb. 29, 2024 USD ($)	Jan. 31, 2024 USD ($)	Nov. 30, 2023 USD ($)	Oct. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Aug. 31, 2023 USD ($)	Jul. 31, 2023 USD ($)	Jun. 30, 2023 USD ($) $ / unit	May 31, 2023 USD ($)	Apr. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Jan. 31, 2023 USD ($)	Nov. 30, 2022 USD ($)	Sep. 30, 2022 USD ($)	Jul. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)	Apr. 30, 2022 USD ($)	Mar. 31, 2021 USD ($)	Jul. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Oct. 31, 2018 USD ($)	Jan. 31, 2017	Jan. 31, 2014 USD ($)	Oct. 31, 2025 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2024 USD ($)	Sep. 30, 2022 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 ($)	Dec. 31, 2023 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Mar. 31, 2019 $ / kWh	Mar. 31, 2018 $ / kWh	Mar. 31, 2017 $ / kWh	Mar. 31, 2024 USD ($)	Mar. 31, 2022 USD ($)	Oct. 01, 2012 USD ($)	Dec. 31, 2026 USD ($)	Oct. 01, 2025	Jul. 01, 2025 USD ($)	Jan. 01, 2025	Apr. 01, 2022 USD ($)	Dec. 31, 2019
Regulatory Asset [Line Items]
Deferred Fuel Cost		$ 54,133,000											$ 0																																					$ 0				$ 54,133,000		$ 0
Regulatory Asset, Noncurrent		5,005,976,000											5,255,509,000																																					5,255,509,000				5,005,976,000		5,255,509,000
Regulatory Liability, Noncurrent		3,911,839,000											3,609,463,000																																					3,609,463,000				3,911,839,000		3,609,463,000
Asset Impairment Charges																																																						12,795,000		107,134,000		$ 42,679,000
Increase (Decrease) in Regulatory Liabilities																																																						180,811,000		660,559,000		463,805,000
Increase (Decrease) in Other Regulatory Assets																																																						(284,914,000)		(378,514,000)		(435,877,000)
Increase (Decrease) in Deferred Fuel Costs																																																						271,109,000		(182,578,000)		(759,361,000)
Deferred Fuel Costs Current Liabilities		14,562,000											237,146,000																																					237,146,000				14,562,000		237,146,000
Public Utilities, Property, Plant and Equipment, Transmission		11,116,000,000											10,414,000,000																																					10,414,000,000				11,116,000,000		10,414,000,000
Customer advances for construction, current		632,850,000											151,662,000																																					151,662,000				632,850,000		151,662,000
Customer advances for construction, noncurrent		1,615,455,000											634,587,000																																					634,587,000				1,615,455,000		634,587,000
Deferred Fuel Cost, Noncurrent		172,201,000											172,201,000																																					172,201,000				172,201,000		172,201,000
Public Utilities, Property, Plant and Equipment, Plant in Service		81,605,615,000											74,867,690,000																																					74,867,690,000				81,605,615,000		74,867,690,000
Deferred Fuel Cost, Noncurrent		172,201,000											172,201,000																																					172,201,000				172,201,000		172,201,000
Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans and Entergy Louisiana natural gas distribution businesses [Member]
Regulatory Asset [Line Items]
Disposal Group, Assets, Regulatory Asset, Noncurrent		35,400,000											35,381,000																																					35,381,000				35,400,000		35,381,000
Disposal Group, Liabilities, Regulatory Liability, Noncurrent		1,600,000											1,611,000																																					1,611,000				1,600,000		1,611,000
Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Deferred Fuel Cost		15,672,000											0																																					0				15,672,000		0
Regulatory Asset, Noncurrent		1,540,709,000											1,637,967,000																																					1,637,967,000				1,540,709,000		1,637,967,000
Regulatory Liability, Noncurrent		1,630,763,000											1,692,547,000																																					1,692,547,000				1,630,763,000		1,692,547,000
Deferred Fuel Cost - Net Asset (Liability)		15,700,000											(4,700,000)																																					(4,700,000)				15,700,000		(4,700,000)
Increase (Decrease) in Regulatory Liabilities																																$ 103,000,000																						(110,727,000)		452,731,000		225,645,000
Increase (Decrease) in Other Regulatory Assets																																																						(106,205,000)		(1,937,000)		(407,327,000)
Increase (Decrease) in Deferred Fuel Costs																																																			$ 225,000,000			20,366,000		(29,494,000)		(134,383,000)
Deferred Fuel Costs Current Liabilities		$ 0											$ 5,421,000																																					$ 5,421,000				$ 0		$ 5,421,000
Customer rate credits																																																																		$ 11,000,000
Percentage of capacity and energy purchases under Unit Power Sales Agreement		14.00%																																																				14.00%
State Effective Income Tax Rate, Percent													7.50%																																					7.50%						7.50%														5.50%
Public Utilities, Property, Plant and Equipment, Transmission		$ 4,578,000,000											$ 4,339,000,000																																					$ 4,339,000,000				$ 4,578,000,000		$ 4,339,000,000
Customer advances for construction, current		543,312,000											151,662,000																																					151,662,000				543,312,000		151,662,000
Customer advances for construction, noncurrent		1,152,530,000											291,842,000																																					291,842,000				1,152,530,000		291,842,000
Deferred Fuel Cost, Noncurrent		168,122,000											168,122,000																																					168,122,000				168,122,000		168,122,000
Public Utilities, Property, Plant and Equipment, Plant in Service		32,763,054,000											29,819,496,000																																					29,819,496,000				32,763,054,000		29,819,496,000
Deferred Fuel Cost, Noncurrent		168,122,000											168,122,000																																					168,122,000				168,122,000		168,122,000
Entergy Louisiana [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy Louisiana natural gas distribution business [Member]
Regulatory Asset [Line Items]
Disposal Group, Assets, Regulatory Asset, Noncurrent		8,900,000											8,947,000																																					8,947,000				8,900,000		8,947,000
Disposal Group, Liabilities, Regulatory Liability, Noncurrent		1,200,000											1,214,000																																					1,214,000				1,200,000		1,214,000
Entergy Louisiana [Member] | Hurricane Francine
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount													152,800,000
Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Deferred Fuel Cost		10,757,000											0																																					0				10,757,000		0
Regulatory Asset, Noncurrent		455,714,000											525,847,000																																					525,847,000				455,714,000		525,847,000
Regulatory Liability, Noncurrent		144,124,000											59,544,000																																					59,544,000				144,124,000		59,544,000
Deferred Fuel Cost - Net Asset (Liability)		10,800,000											(126,300,000)																																					(126,300,000)				10,800,000		(126,300,000)
Increase (Decrease) in Regulatory Liabilities																																																						74,631,000		17,985,000		(59,513,000)
Increase (Decrease) in Other Regulatory Assets																																																						(70,133,000)		(53,229,000)		59,616,000
Increase (Decrease) in Deferred Fuel Costs																																																						137,073,000		4,329,000		(273,856,000)
Deferred Fuel Costs Current Liabilities		$ 0											126,316,000																																					126,316,000				$ 0		126,316,000
Percentage of capacity and energy purchases under Unit Power Sales Agreement		33.00%																																																				33.00%														56.38%
Public Utilities, Property, Plant and Equipment, Transmission		$ 1,748,000,000											1,567,000,000																																					1,567,000,000				$ 1,748,000,000		1,567,000,000
Customer advances for construction, current		89,538,000											0																																					0				89,538,000		0
Customer advances for construction, noncurrent		184,564,000											112,618,000																																					112,618,000				184,564,000		112,618,000
Public Utilities, Property, Plant and Equipment, Plant in Service		9,762,154,000											8,347,682,000																																					8,347,682,000				9,762,154,000		8,347,682,000
Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		109,690,000											133,261,000																																					133,261,000				109,690,000		133,261,000
Regulatory Liability, Noncurrent		312,962,000											260,312,000																																					260,312,000				312,962,000		260,312,000
Deferred Fuel Cost - Net Asset (Liability)		(3,200,000)											3,900,000																																					3,900,000				(3,200,000)		3,900,000
Asset Impairment Charges																																																						12,795,000		0		0
Increase (Decrease) in Regulatory Liabilities																																																						26,316,000		175,808,000		66,022,000
Increase (Decrease) in Other Regulatory Assets																																																						(47,257,000)		(25,424,000)		(19,745,000)
Increase (Decrease) in Deferred Fuel Costs																																																						(7,110,000)		(2,247,000)		(4,005,000)
Deferred Fuel Costs Current Liabilities		$ 3,209,000											$ 980,000																																					$ 980,000				$ 3,209,000		$ 980,000
Percentage of capacity and energy purchases under Unit Power Sales Agreement		17.00%																																																				17.00%														19.43%
State Effective Income Tax Rate, Percent													7.50%																																					7.50%						7.50%														5.50%
Public Utilities, Property, Plant and Equipment, Transmission		$ 168,000,000											$ 155,000,000																																					$ 155,000,000				$ 168,000,000		$ 155,000,000
Deferred Fuel Cost, Noncurrent		4,080,000											4,080,000																																					4,080,000				4,080,000		4,080,000
Public Utilities, Property, Plant and Equipment, Plant in Service		2,310,746,000											2,221,713,000																																					2,221,713,000				2,310,746,000		2,221,713,000
Deferred Fuel Cost, Noncurrent		4,080,000											4,080,000																																					4,080,000				4,080,000		4,080,000
Entergy New Orleans [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans natural gas distribution business [Member]
Regulatory Asset [Line Items]
Asset Impairment Charges							$ 13,000,000
Disposal Group, Assets, Regulatory Asset, Noncurrent		23,700,000											23,682,000																																					23,682,000				23,700,000		23,682,000
Disposal Group, Liabilities, Regulatory Liability, Noncurrent		400,000											397,000																																					397,000				400,000		397,000													$ 4,000,000
Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		510,806,000											549,708,000																																					549,708,000				510,806,000		549,708,000
Regulatory Liability, Noncurrent		138,969,000											18,705,000																																					18,705,000				138,969,000		18,705,000
Deferred Fuel Cost - Net Asset (Liability)		(11,400,000)											(59,300,000)																																					(59,300,000)				(11,400,000)		(59,300,000)
Increase (Decrease) in Regulatory Liabilities																																																						84,253,000		(45,301,000)		(20,122,000)
Increase (Decrease) in Other Regulatory Assets																																																						(38,902,000)		(46,898,000)		17,924,000
Increase (Decrease) in Deferred Fuel Costs																																																						47,918,000		(198,290,000)		(119,096,000)
Deferred Fuel Costs Current Liabilities		11,353,000											59,271,000																																					59,271,000				11,353,000		59,271,000
Public Utilities, Property, Plant and Equipment, Transmission		2,397,000,000											2,054,000,000																																					2,054,000,000				2,397,000,000		2,054,000,000
Public Utilities, Property, Plant and Equipment, Plant in Service		11,252,187,000											10,141,795,000																																					10,141,795,000				11,252,187,000		10,141,795,000
Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Incremental Fuel and Replacement Energy Costs																																												$ 65,900,000
Deferred Fuel Cost		27,704,000											0																																					0				27,704,000		0
Regulatory Asset, Noncurrent		1,743,848,000											1,700,110,000																																					1,700,110,000				1,743,848,000		1,700,110,000
Regulatory Liability, Noncurrent		1,044,060,000											831,165,000																																					831,165,000				1,044,060,000		831,165,000
Deferred Fuel Cost - Net Asset (Liability)		27,700,000											(45,200,000)																																					(45,200,000)				27,700,000		(45,200,000)
Asset Impairment Charges																																																						0		131,775,000		78,434,000
Increase (Decrease) in Regulatory Liabilities																																																						218,074,000		97,049,000		240,762,000
Increase (Decrease) in Other Regulatory Assets																																																						43,738,000		(185,251,000)		6,197,000
Increase (Decrease) in Deferred Fuel Costs																																																						72,862,000		43,124,000		(228,021,000)
Deferred Fuel Costs Current Liabilities		$ 0											$ 45,158,000																																					$ 45,158,000				$ 0		$ 45,158,000
Percentage of capacity and energy purchases under Unit Power Sales Agreement		36.00%																																																				36.00%														24.19%
State Effective Income Tax Rate, Percent													4.30%																																					4.30%						4.30%																6.50%
Public Utilities, Property, Plant and Equipment, Transmission		$ 2,195,000,000											$ 2,267,000,000																																					$ 2,267,000,000				$ 2,195,000,000		$ 2,267,000,000
Public Utilities, Property, Plant and Equipment, Plant in Service		17,946,400,000											16,949,162,000																																					16,949,162,000				17,946,400,000		16,949,162,000
System Energy [Member]
Regulatory Asset [Line Items]
Incremental Fuel and Replacement Energy Costs																																							$ 360,000,000
Earned return on equity																																							10.94%				10.94%
Regulatory Asset, Noncurrent		601,185,000											426,494,000																																					426,494,000				601,185,000		426,494,000
Regulatory Liability, Noncurrent		897,301,000											747,190,000																																					747,190,000				897,301,000		747,190,000
Increase (Decrease) in Regulatory Liabilities																																																						144,604,000		(37,713,000)		11,009,000
Increase (Decrease) in Other Regulatory Assets																																																						174,691,000		(19,866,000)		31,239,000
Public Utilities, Property, Plant and Equipment, Transmission		28,000,000											30,000,000																																					30,000,000				28,000,000		30,000,000
Public Utilities, Property, Plant and Equipment, Plant in Service		6,086,067,000											5,973,424,000																																					5,973,424,000				6,086,067,000		5,973,424,000
Storm Costs [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		481,400,000											547,300,000																																					547,300,000				481,400,000		547,300,000
Storm Costs [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		188,100,000											226,600,000																																					226,600,000				188,100,000		226,600,000
Storm Costs [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		200,000											4,000,000.0																																					4,000,000.0				200,000		4,000,000.0
Storm Costs [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		263,800,000											286,500,000																																					286,500,000				263,800,000		286,500,000
Storm Costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		29,300,000											29,800,000																																					29,800,000				29,300,000		29,800,000
Formula rate plan historical year rate adjustment [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		28,300,000											15,500,000																																					15,500,000				28,300,000		15,500,000
Formula rate plan historical year rate adjustment [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		28,300,000											15,500,000																																					15,500,000				28,300,000		15,500,000
Deferred COVID-19 costs [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		40,300,000											104,000,000.0																																					104,000,000.0				40,300,000		104,000,000.0
Deferred COVID-19 costs [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		0											47,800,000																																					47,800,000				0		47,800,000
Deferred COVID-19 costs [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		5,800,000											10,200,000																																					10,200,000				5,800,000		10,200,000
Deferred COVID-19 costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		31,200,000											35,100,000																																					35,100,000				31,200,000		35,100,000
Other Regulatory Assets (Liabilities) [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		61,900,000											99,700,000																																					99,700,000				61,900,000		99,700,000
Other Regulatory Assets (Liabilities) [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		38,100,000											48,500,000																																					48,500,000				38,100,000		48,500,000
Other Regulatory Assets (Liabilities) [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		13,900,000											18,800,000																																					18,800,000				13,900,000		18,800,000
Other Regulatory Assets (Liabilities) [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		11,000,000.0											20,700,000																																					20,700,000				11,000,000.0		20,700,000
Other Regulatory Assets (Liabilities) [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		24,900,000											15,600,000																																					15,600,000				24,900,000		15,600,000
Other Regulatory Assets (Liabilities) [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		10,200,000											14,700,000																																					14,700,000				10,200,000		14,700,000
Deferred Fuel Costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Asset Impairment Charges																																																	$ 68,900,000
Subsequent Event [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Customer rate credits																																																																			$ 20,235,000
Certain receipts under affiliated PPAs [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Increase (Decrease) in Regulatory Liabilities																											$ 21,900,000
Refund from System Energy settlement with the APSC [Member]
Regulatory Asset [Line Items]
Regulatory Liability, Noncurrent		0											8,200,000																																					8,200,000				0		8,200,000
Refund from System Energy settlement with the APSC [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Liability, Noncurrent		0											8,200,000																																					8,200,000				0		8,200,000
Shorter-term financing interest earnings [Member]
Regulatory Asset [Line Items]
Regulatory Liability, Noncurrent		0											48,900,000																																					48,900,000				0		48,900,000
Shorter-term financing interest earnings [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Liability, Noncurrent		0											48,900,000																																					48,900,000				0		48,900,000
Credits expected to be shared with customers from resolution of the 2016-2018 IRS audit [Member]
Regulatory Asset [Line Items]
Regulatory Liability, Noncurrent		132,500,000											163,300,000																																					163,300,000				132,500,000		163,300,000
Credits expected to be shared with customers from resolution of the 2016-2018 IRS audit [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Liability, Noncurrent		0											25,300,000																																					25,300,000				0		25,300,000		38,000,000
Credits expected to be shared with customers from resolution of the 2016-2018 IRS audit [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Liability, Noncurrent		132,500,000											138,000,000.0							$ 138,000,000	$ 138,000,000																											$ 138,000,000		$ 138,000,000.0				132,500,000		138,000,000.0	$ 138,000,000	60,000,000						$ 138,000,000
Increase (Decrease) in Regulatory Liabilities																																																78,000,000
2022 Formula Rate Plan Filing [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Return on Equity, Percentage																														8.38%
Public Utilities, Requested Rate Increase (Decrease), Amount																														$ 70,700,000
Public Utilities, Approved Rate Increase (Decrease), Amount																											85,200,000			85,200,000
Projected Revenue Deficiency																														65,900,000
Credit relating to the distribution recovery mechanism																														$ 6,000,000
Earned return on common equity																														8.33%
2022 Formula Rate Plan Filing [Member] | Maximum [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																														$ 4,900,000
2023 Formula Rate Plan Filing [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
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
2023 Formula Rate Plan Filing [Member] | Entergy Louisiana [Member] | System Energy Settlement with the LPSC [Member]
Regulatory Asset [Line Items]
Public Utilities, Interim Rate Increase (Decrease), Amount													$ 25,100,000
2023 Formula Rate Plan Filing [Member] | Entergy Louisiana [Member] | Hurricane Francine
Regulatory Asset [Line Items]
Public Utilities, Interim Rate Increase (Decrease), Amount											$ 17,800,000
2023 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Return on Equity, Percentage																																6.67%
Public Utilities, Requested Rate Increase (Decrease), Amount																														26,500,000		$ 39,800,000
Public Utilities, Interim Rate Increase (Decrease), Amount																														$ 19,000,000.0	$ 27,900,000	19,800,000
Earned return on rate base																														6.10%
Increase (Decrease) in Other Regulatory Assets																													$ 800,000
Refund to retail customers																																$ 1,300,000
Regulatory credit for realignment of costs from formula rate plan to annual power management rider																													4,100,000
Regulatory credit for realignment of costs from formula rate plan to grid modernization rider																													$ 4,300,000
2023 Formula Rate Plan Filing [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Public Utilities, Approved Return on Equity, Percentage																															9.35%
Public Utilities, Requested Rate Increase (Decrease), Amount																															$ 25,600,000
Requested reduction to requested rate increase																												$ 8,300,000
Proposed formula rate plan rate mitigation through offsets to regulatory liabilities																												12,000,000
Customer bill credits																										$ 8,900,000
Public Utilities, Increase (Decrease) in Requested Rate, Amount																												500,000
2023 Formula Rate Plan Filing [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																												$ 130,300,000
Annual revenue constraint percentage																												4.00%
Projected Revenue Deficiency																																																								$ 80,500,000
Reduction in recovery due to excess accumulated deferred income taxes from reductions in state income tax rates																									$ 24,700,000
Recovery related to the resolution of the 2016 and 2017 IRS audits from previous tax positions that are no longer uncertain																									34,900,000
Netting Adjustment																																																												$ 49,800,000
Earned return on common equity																																																								8.11%				7.29%
2023 Formula Rate Plan Filing [Member] | Maximum [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Percentage cap of retail revenues																															2.00%
2023 Formula Rate Plan Filing [Member] | Maximum [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																												$ 88,600,000
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount																									87,700,000
2023 Formula Rate Plan Filing [Member] | Storm Costs [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount																										500,000
2023 Formula Rate Plan Filing [Member] | Formula rate plan historical year rate adjustment [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent																																																												$ 18,200,000
2023 Formula Rate Plan Filing [Member] | Deferred COVID-19 costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent																									39,000,000
2023 Formula Rate Plan Filing [Member] | Natural Gas, US Regulated [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Oil and Gas, Average Production Cost Per Unit | $ / unit																													4.50
2023 Formula Rate Plan Filing [Member] | Natural Gas, US Regulated [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Earned return on equity																															3.52%
Public Utilities, Requested Rate Increase (Decrease), Amount																															$ 8,200,000
Public Utilities, Approved Rate Increase (Decrease), Amount																										6,900,000
2023 Formula Rate Plan Filing [Member] | Electricity, US Regulated [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Earned return on equity																															7.34%
Public Utilities, Requested Rate Increase (Decrease), Amount																															$ 17,400,000
Public Utilities, Approved Rate Increase (Decrease), Amount																										$ 10,500,000					$ 3,400,000
2024 Formula Rate Plan Filing [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Return on Equity, Percentage									9.70%
Public Utilities, Approved Rate Increase (Decrease), Amount									$ 2,000,000
Basis points bandwidth above and below midpoint return on common equity									40
Earned return on common equity									9.98%
State Effective Income Tax Rate, Percent													7.50%																																					7.50%						7.50%														5.50%
Customer credit for ROE above allowed ROE																																													$ 31,900,000
2024 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Return on Equity, Percentage																					7.10%
Public Utilities, Requested Rate Increase (Decrease), Amount																			$ 64,600,000		$ 63,400,000
Public Utilities, Approved Rate Increase (Decrease), Amount																																																										$ 300,000
Public Utilities, Interim Rate Increase (Decrease), Amount																				$ 32,600,000
Earned return on rate base																			6.08%																																							6.81%
Annual depreciation expense increase																						$ 55,200,000
Regulatory credits																			$ 7,300,000
2024 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member] | Residential [Member]
Regulatory Asset [Line Items]
Customer charge																			$ 31.82
Average customer usage | kWh																			1,000
2024 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member] | General service [Member]
Regulatory Asset [Line Items]
Customer charge																			$ 53.10
2024 Formula Rate Plan Filing [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Public Utilities, Approved Return on Equity, Percentage																				9.35%
Public Utilities, Requested Rate Increase (Decrease), Amount																				$ 12,600,000
Public Utilities, Approved Rate Increase (Decrease), Amount																$ 11,200,000
Requested reduction to requested rate increase																		$ 1,600,000
2024 Formula Rate Plan Filing [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																		$ 102,600,000
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount														$ 82,700,000
Annual revenue constraint percentage																		4.00%
Projected Revenue Deficiency														63,700,000																																								$ 69,500,000
Refund to retail customers												$ 30,100,000
Netting Adjustment														$ 31,400,000																																												$ 33,100,000
Earned return on common equity																																																						8.43%				7.48%
State Effective Income Tax Rate, Percent													4.80%																																					4.80%						4.80%														4.30%
2024 Formula Rate Plan Filing [Member] | Maximum [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Percentage cap of retail revenues																				2.00%
2024 Formula Rate Plan Filing [Member] | Maximum [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount															$ 83,500,000			$ 82,600,000
2024 Formula Rate Plan Filing [Member] | Formula rate plan historical year rate adjustment [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent													$ 15,500,000																																					$ 15,500,000						$ 15,500,000
2024 Formula Rate Plan Filing [Member] | Natural Gas, US Regulated [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Earned return on equity																				5.87%
Public Utilities, Requested Rate Increase (Decrease), Amount																				$ 5,600,000
Public Utilities, Approved Rate Increase (Decrease), Amount																5,400,000
2024 Formula Rate Plan Filing [Member] | Electricity, US Regulated [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Earned return on equity																				8.66%
Public Utilities, Requested Rate Increase (Decrease), Amount																				$ 7,000,000.0
Public Utilities, Approved Rate Increase (Decrease), Amount																5,800,000
2022 Base Rate Case [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																									$ 24,600,000					$ 54,000,000				$ 131,400,000		$ 131,400,000
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount																								$ 24,100,000
Regulatory Asset																														4,800,000
Requested reduction to requested rate increase																																		50,700,000
2022 Base Rate Case [Member] | Other Regulatory Assets (Liabilities) [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																														$ 14,500,000
2022 Base Rate Case [Member] | 2022 Rate Case Settlement Relate Back [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Liability, Noncurrent																											$ 10,300,000
Transmission Cost Recovery Factor Rider [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount				$ 30,300,000											$ 9,700,000																										$ 2,700,000
Incremental annual revenues				20,600,000
Public Utilities, Approved Rate Increase (Decrease), Amount																																								$ 2,700,000
Distribution Cost Recovery Factor Rider [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount					$ 94,700,000					$ 77,800,000						48,900,000			$ 40,300,000
Incremental annual revenues			$ 14,300,000		16,900,000					$ 29,300,000			8,200,000			8,600,000
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount			$ 92,100,000										48,500,000
Generation Cost Recovery Rider [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																																			$ 5,700,000			$ 92,800,000
Incremental annual revenues																																						$ 4,500,000
Fuel Reconciliation [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Deferred Fuel Cost																					30,000,000																											30,000,000									$ 30,000,000							30,000,000	$ 103,100,000						$ 99,700,000
Margins from off-system sales made during the reconciliation period																												9,300,000
Increase (Decrease) in Deferred Fuel Costs																																																																1,600,000,000	$ 1,700,000,000
Power management rider [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Increase (Decrease) in over (under) Energy Recovery					9,300,000											60,100,000							$ 47,000,000
Deferred Fuel Costs Current Liabilities																												$ 51,100,000
Power management rider [Member] | Subsequent Event [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Increase (Decrease) in over (under) Energy Recovery	$ 4,800,000
Request for Extension and Modification of Formula Rate Plan [Member] | Maximum [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Public Utilities, Approved Equity Capital Structure, Percentage																									55.00%
Unit Power Sales Agreement Complaint [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Proceeds from Legal Settlements																																	$ 27,800,000
Unit Power Sales Agreement Complaint [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Proceeds from Legal Settlements																																	34,000,000
Unit Power Sales Agreement Complaint [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Proceeds from Legal Settlements																																	41,700,000
Energy Cost Recovery Rider [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Deferred Fuel Cost																																				$ 291,700,000
Increase (Decrease) in over (under) Energy Recovery					$ 21,500,000											144,600,000							$ 142,000,000
Energy Cost Recovery Rider [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Portion of Approved Revenue Requirement Increase Subject to Possible Future Adjustment and Refund to Customers																																										$ 45,700,000
Energy Cost Recovery Rider Rate Per kWh										0.01333										0.00882																																			0.00882		0.01883		0.01639			0.01547	0.01164
Requested Energy Cost Recovery Rider Rate Per kWh																																																							0.00882		0.01883				0.01882	0.01547
Proceeds from Legal Settlements																																	$ 41,700,000
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] | February 2021 Winter Storms [Member]
Regulatory Asset [Line Items]
Deferred Fuel Cost																													$ 32,000,000
Energy Cost Recovery Rider [Member] | Subsequent Event [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Requested Energy Cost Recovery Rider Rate Per kWh																																																					0.01333
Energy cost recovery rider and power management rider [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Deferred Fuel Cost																																																												$ 200,000,000
System Energy Settlement with the MPSC [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Number of retail customers																																				460,000
Proceeds from Legal Settlements																																					$ 235,000,000
One-time customer credit																																				$ 80
Increase (Decrease) in Deferred Fuel Costs																																		$ 198,300,000
Refund to retail customers																																			$ 36,700,000
Grand Gulf Credit Rider [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Refund to retail customers																		100,600,000																												$ 92,300,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Public Utilities, Approved Return on Equity, Percentage																	9.50%
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	$ 184,000,000
Basis points bandwidth above and below midpoint return on common equity																	40
Annual increase in nuclear depreciation rates																	$ 15,000,000
Expenses reflecting effects of agreement in principle																																															$ 151,000,000
Expenses reflecting effects of agreement in principle, net of tax																																															$ 112,000,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request [Member] | Entergy Louisiana [Member] | System Energy Settlement with the LPSC [Member]
Regulatory Asset [Line Items]
Customer rate credits																	75,500,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request [Member] | Entergy Louisiana [Member] | Formula Rate Plan Global Settlement [Member]
Regulatory Asset [Line Items]
Customer rate credits																	5,800,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request [Member] | Maximum [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																	140,000,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request [Member] | Maximum [Member] | Entergy Louisiana [Member] | 2023 [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																	350,000,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request [Member] | Maximum [Member] | Entergy Louisiana [Member] | 2024 [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																	375,000,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request [Member] | Maximum [Member] | Entergy Louisiana [Member] | 2025 [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																	$ 400,000,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request [Member] | Credits expected to be shared with customers from resolution of the 2016-2018 IRS audit [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Liability, Noncurrent																																																										$ 38,000,000
Formula Rate Plan Global Settlement [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
One-time customer credit																									$ 5,800,000
Formula Rate Plan Global Settlement [Member] | Associated with Late Fees from 2016 Flood [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Increase (Decrease) in Regulatory Assets and Liabilities																									6,200,000
Formula Rate Plan Global Settlement [Member] | Excess accumulated deferred income taxes as a result of the Tax Cuts and Jobs Act [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Increase (Decrease) in Regulatory Assets and Liabilities																									$ 105,600,000
System Energy Settlement with the LPSC [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Proceeds from Legal Settlements																		$ 15,000,000
Grand Gulf Capacity Filing [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Percentage of capacity and energy purchases under Unit Power Sales Agreement																																																																						14.00%
Grand Gulf Capacity Filing [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Percentage of purchases under MSS-4 replacement tariff																																																																						2.43%
Interim Fuel Refund [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Interim fuel refund, including interest													$ 45,500,000
Additional generation and transmission resources [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Measurement of electrical voltage for new transmission line | kV															500
Measurement of electrical voltage for substation upgrades | kV															500
Additional generation and transmission resources [Member] | Entergy Louisiana [Member] | Three new combined cycle combustion turbine generation resources [Member]
Regulatory Asset [Line Items]
Generation Capacity | MW															2,262
Additional generation and transmission resources [Member] | Entergy Louisiana [Member] | New transmission line [Member]
Regulatory Asset [Line Items]
Public Utilities, Property, Plant and Equipment, Transmission															$ 546,000,000
Additional generation and transmission resources [Member] | Entergy Louisiana [Member] | Future additions contributed by customer [Member]
Regulatory Asset [Line Items]
Generation Capacity | MW															1,500
Additional generation and transmission resources [Member] | Entergy Louisiana [Member] | Franklin Farms Power Station Units 1 and 2
Regulatory Asset [Line Items]
Public Utilities, Property, Plant and Equipment, Generation or Processing															$ 2,387,000,000
2025 Formula Rate Plan Filing | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
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]
Regulatory Asset [Line Items]
Public Utilities, Approved Return on Equity, Percentage										9.35%
Earned return on equity										10.98%
Public Utilities, Requested Rate Increase (Decrease), Amount										$ 13,800,000
Public Utilities, Approved Rate Increase (Decrease), Amount						$ 19,200,000
Proposed formula rate plan rate mitigation through offsets to regulatory liabilities							4,400,000
Public Utilities, Requested Rate Increase (Decrease), Amount, Adjusted										$ 8,600,000
Requested reduction to requested rate decrease							7,200,000
Proposed reduction in customer late fees							4,100,000
2025 Formula Rate Plan Filing | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount							$ 117,700,000
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount		93,900,000
Annual revenue constraint percentage							4.00%
Projected Revenue Deficiency		65,600,000
Netting Adjustment		48,800,000																																																						$ 48,800,000
Earned return on common equity																																																								7.71%
2025 Formula Rate Plan Filing | Maximum [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount				$ 93,900,000			$ 92,300,000
2025 Formula Rate Plan Filing | Formula rate plan historical year rate adjustment [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		$ 28,300,000																																																				$ 28,300,000
2025 Formula Rate Plan Filing | Subsequent Event [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Projected Revenue Deficiency																																																				$ 68,900,000
Earned return on common equity																																																				8.45%
Interim Facilities Rate Adjustments | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Public Utilities, Interim Rate Increase (Decrease), Amount																																																		$ 8,700,000				$ 46,700,000
Interim Facilities Rate Adjustments | Subsequent Event [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Public Utilities, Interim Rate Increase (Decrease), Amount																																																				$ 111,300,000	$ 1,000,000.0
Interim rate increase, incremental amount																																																				$ 64,700,000
Arkansas Cypress Solar | Entergy Arkansas [Member] | Solar photovoltaic array
Regulatory Asset [Line Items]
Generation Capacity | MW					600
Arkansas Cypress Solar | Entergy Arkansas [Member] | Battery energy storage system
Regulatory Asset [Line Items]
Generation Capacity | MW					350
Arkansas Cypress Solar | Entergy Arkansas [Member] | Arkansas Cypress Solar
Regulatory Asset [Line Items]
Public Utilities, Property, Plant and Equipment, Generation or Processing					$ 1,602,000,000
2024 look-back filing | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount											$ 0