Rate And Regulatory Matters (Narrative) (Details)	1 Months Ended																3 Months Ended	6 Months Ended		9 Months Ended	12 Months Ended					13 Months Ended	36 Months Ended	57 Months Ended
	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 ($) shares	Jan. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Nov. 30, 2022 USD ($)	Oct. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Aug. 31, 2022 USD ($)	Jul. 31, 2022 USD ($)	Apr. 30, 2022 USD ($)	Mar. 31, 2021	Dec. 31, 1988	Mar. 31, 2023 USD ($) shares	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2024 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($) shares	Dec. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2022 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2021 USD ($)
Impairment of Long-Lived Assets Held-for-use																		$ 0	$ (163,321,000)
Public Utilities, Property, Plant and Equipment, Construction Work in Progress			$ 2,190,958,000					$ 1,844,171,000										2,190,958,000		$ 1,844,171,000				$ 1,844,171,000	$ 1,844,171,000
Proceeds from the issuance of long-term debt																		2,489,886,000	3,851,061,000
Storm Reserve Escrow Account			411,035,000					401,955,000										411,035,000		401,955,000				401,955,000	401,955,000
Regulatory Assets, Noncurrent			5,645,209,000					6,036,397,000										5,645,209,000		6,036,397,000				6,036,397,000	6,036,397,000
Long-term Transition Bond, Noncurrent			278,134,000					292,760,000										278,134,000		292,760,000				292,760,000	292,760,000
Deferred Fuel Cost			182,387,000					710,401,000										182,387,000		710,401,000				710,401,000	710,401,000
Replacement Reserve Escrow			411,000,000					402,000,000										411,000,000		402,000,000				402,000,000	402,000,000
Subsequent Event [Member] | Indian Point
Proceeds from Legal Settlements	$ 40,000,000
Litigation Settlement, Amount Awarded from Other Party		$ 59,000,000
Entergy Louisiana [Member]
Public Utilities, Property, Plant and Equipment, Construction Work in Progress			689,520,000					736,969,000										689,520,000		736,969,000				736,969,000	736,969,000
Proceeds from the issuance of long-term debt																		833,484,000	1,777,192,000
Total Restoration Costs For Repair and Replacement of Electrical System including carrying costs														$ 2,640,000,000
Storm Reserve Escrow Account			300,008,000					293,406,000										300,008,000		293,406,000				293,406,000	293,406,000
Regulatory Assets, Noncurrent			1,608,035,000					2,056,179,000										1,608,035,000		2,056,179,000				2,056,179,000	2,056,179,000
Deferred Fuel Cost			0					159,183,000										0		159,183,000				159,183,000	159,183,000
Replacement Reserve Escrow			$ 300,000,000.0					293,400,000										$ 300,000,000.0		293,400,000				293,400,000	293,400,000
LURC's percentage of annual dividends																		1.00%
ELL's percentage of annual dividends																		99.00%
Proceeds from Contributed Capital																		$ 1,457,676,000	1,000,000,000
Regulatory charge recorded as a result of reduction in income tax expense																	$ 103,000,000
Regulatory charge recorded as a result of reduction in income tax expense, net of tax																	76,000,000
Reduction to income tax expense - net of provision for uncertain tax positions																	133,000,000
Reduction to income tax expense - net, offset by other tax charges																	129,000,000
Entergy Louisiana [Member] | Restoration Law Trust II (storm trust II) [Member]
LURC's beneficial interest in the storm trust, percentage			1.00%															1.00%
Preferred Stock, Dividend Rate, Percentage						7.50%
Preferred Stock, Liquidation Preference, Value						$ 100											$ 100						$ 100
Class preferred non voting membership interest units acquired in wholly owned subsidiary | shares						14,576,757.48											14,576,757.48						14,576,757.48
Entergy Louisiana [Member] | Deferred COVID 19 Costs
Regulatory Assets			$ 47,800,000															$ 47,800,000
Amount of long-term debt proposed to be used to generate earnings to reduce certain regulatory assets					$ 1,600,000,000
Entergy Louisiana [Member] | Hurricanes Laura, Delta, Zeta, and Winter Storm Uri
Carrying costs associated with storm restoration costs																				3,000,000
Entergy Louisiana [Member] | Hurricane Ida
Carrying costs associated with storm restoration costs																				57,000,000
Entergy Louisiana [Member] | Hurricane Ida
Total Restoration Costs For Repair and Replacement of Electrical System										$ 2,640,000,000				2,540,000,000
Non-capital storm costs														586,000,000
Deferred Storm and Property Reserve Deficiency, Noncurrent								1,000,000,000						1,960,000,000						1,000,000,000				1,000,000,000	1,000,000,000				$ 1,000,000,000
Total Restoration Costs For Repair and Replacement of Electrical System including carrying costs														2,600,000,000
Carrying costs associated with storm restoration costs										$ 59,100,000
Entergy Louisiana [Member] | Hurricanes Laura, Delta, Zeta, and Winter Storm Uri
Total Restoration Costs For Repair and Replacement of Electrical System								2,570,000,000
Total Restoration Costs For Repair and Replacement of Electrical System including carrying costs														$ 32,000,000
Carrying costs associated with storm restoration costs								59,200,000
Aggregate principal amount of system restoration bonds authorization requested							$ 1,491,000,000	1,657,000,000												1,657,000,000				1,657,000,000	1,657,000,000
aggregate principal amount of system restoration bond authorization approved						$ 1,491,000,000											$ 1,491,000,000						$ 1,491,000,000
Entergy Louisiana [Member] | Hurricanes Laura, Delta, Zeta, and Winter Storm Uri | Storm Costs
Regulatory Assets			180,000,000															180,000,000
Entergy Mississippi [Member]
Public Utilities, Property, Plant and Equipment, Construction Work in Progress			236,022,000					170,191,000										236,022,000		170,191,000				170,191,000	170,191,000
Proceeds from the issuance of long-term debt																		396,861,000	249,746,000
Storm Reserve Escrow Account			34,304,000					33,549,000										34,304,000		33,549,000				33,549,000	33,549,000
Regulatory Assets, Noncurrent			559,306,000					519,460,000										559,306,000		519,460,000				519,460,000	519,460,000
Deferred Fuel Cost			0					143,211,000										0		143,211,000				143,211,000	143,211,000
Replacement Reserve Escrow			34,300,000					33,500,000										34,300,000		33,500,000				33,500,000	33,500,000
Entergy New Orleans [Member]
Public Utilities, Property, Plant and Equipment, Construction Work in Progress			26,582,000					39,607,000										26,582,000		39,607,000				39,607,000	39,607,000
Proceeds from the issuance of long-term debt																		14,641,000	0
Storm Reserve Escrow Account			76,723,000					75,000,000										76,723,000		75,000,000				75,000,000	75,000,000
Regulatory Assets, Noncurrent			199,182,000					202,112,000										199,182,000		202,112,000				202,112,000	202,112,000
Long-term Transition Bond, Noncurrent			11,745,000					17,697,000										11,745,000		17,697,000				17,697,000	17,697,000
Deferred Fuel Cost			5,838,000					10,153,000										5,838,000		10,153,000				10,153,000	10,153,000
Replacement Reserve Escrow			76,700,000					75,000,000.0										76,700,000		75,000,000.0				75,000,000.0	75,000,000.0
Entergy Texas [Member]
Public Utilities, Property, Plant and Equipment, Construction Work in Progress			613,969,000					339,139,000										613,969,000		339,139,000				339,139,000	339,139,000
Proceeds from the issuance of long-term debt																		0	286,842,000
Regulatory Assets, Noncurrent			598,370,000					578,682,000										598,370,000		578,682,000				578,682,000	578,682,000
Long-term Transition Bond, Noncurrent			266,389,000					275,064,000										266,389,000		275,064,000				275,064,000	275,064,000
Deferred Fuel Cost			160,073,000					258,115,000										160,073,000		258,115,000				258,115,000	258,115,000
Entergy Arkansas [Member]
Public Utilities, Property, Plant and Equipment, Construction Work in Progress			476,253,000					417,244,000										476,253,000		417,244,000				417,244,000	417,244,000
Proceeds from the issuance of long-term debt																		661,923,000	223,882,000
Regulatory Assets, Noncurrent			1,862,241,000					1,810,281,000										1,862,241,000		1,810,281,000				1,810,281,000	1,810,281,000
Deferred Fuel Cost			16,475,000					139,739,000										16,475,000		139,739,000				139,739,000	139,739,000
Entergy Arkansas [Member] | Deferred COVID 19 Costs
Regulatory Assets			39,000,000															39,000,000
System Energy [Member]
Public Utilities, Property, Plant and Equipment, Construction Work in Progress			99,337,000					102,987,000										99,337,000		102,987,000				102,987,000	102,987,000
Proceeds from the issuance of long-term debt																		585,898,000	$ 556,696,000
Regulatory Assets, Noncurrent			431,804,000					415,121,000										$ 431,804,000		415,121,000				415,121,000	$ 415,121,000
System Energy [Member] | Subsequent Event [Member]
Additional unprotected excess ADIT related to uncertain decommissioning tax deduction		147,000,000
Grand Gulf [Member] | System Energy [Member]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage																		11.50%
Generation Cost Recovery Rider | Entergy Texas [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount												$ 92,800,000
Public Utilities, Interim Rate Increase (Decrease), Amount											$ 5,700,000
Grand Gulf Sale-leaseback Renewal Complaint | Entergy Louisiana [Member]
Proceeds from Legal Settlements							27,800,000
Grand Gulf Sale-leaseback Renewal Complaint | Entergy Mississippi [Member]
Allocated sale-leaseback annual renewal costs																		$ 5,700,000
Grand Gulf Sale-leaseback Renewal Complaint | Entergy New Orleans [Member]
Proceeds from Legal Settlements							34,000,000
Grand Gulf Sale-leaseback Renewal Complaint | Entergy Arkansas [Member]
Proceeds from Legal Settlements							41,700,000
Grand Gulf Sale-leaseback Renewal Complaint | System Energy [Member]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage																11.50%
Payments for Legal Settlements							103,500,000
Disallowance of future sale-leaseback renewal costs recovery																								11,500,000
Calculated refund of sale-leaseback renewal rental costs, including interest							89,800,000
One-time accumulated deferred income tax credit																												$ 25,200,000
Calculated net refund for excess depreciation expense							13,700,000
Unit Power Sales Agreement Complaint | Entergy Arkansas [Member]
Proceeds from Legal Settlements							$ 41,700,000
Unit Power Sales Agreement Complaint | System Energy [Member]
Potential settlement refund									$ 18,000,000
FERC ALJ initial decision recommended refunds																		115,000,000
Interest component of FERC ALJ initial decision recommended refunds																		142,000,000
FERC ALJ initial decision modification to cash working capital allowance				$ 36,400,000
2022 Base Rate Case | Entergy Texas [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount				54,000,000									$ 131,400,000
Rate case expenses to be recovered from customers through a rider				4,800,000
2022 Base Rate Case | Entergy Texas [Member] | Deferred COVID 19 Costs
Public Utilities, Requested Rate Increase (Decrease), Amount				3,400,000
2022 Base Rate Case | Entergy Texas [Member] | Other Regulatory Assets (Liabilities)
Public Utilities, Requested Rate Increase (Decrease), Amount				14,500,000
Fuel reconciliation | Entergy Texas [Member]
Eligible fuel and purchased power expenses, net of certain revenues credited to such expenses and other adjustments																											$ 1,700,000,000
Deferred fuel under-recovery balance, including interest, for reconciliation period																											$ 103,100,000
Fuel reconciliation | Entergy Texas [Member] | Winter Storm Uri
Proposed disallowance for fuel purchase						5,200,000
Fuel reconciliation | Entergy Texas [Member] | Subsequent Event [Member] | Winter Storm Uri
Margins from off-system sales made during the reconciliation period		9,300,000
2022 Look-back Filing [Member] | Entergy Mississippi [Member]
Regulatory Assets, Noncurrent			$ 800,000															800,000
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount						19,800,000
Requested refund for true-up of demand-side management costs						1,300,000
Earned return on rate base																									6.10%
2022 Look-back Filing [Member] | Entergy Mississippi [Member] | Formula Rate Plan Historical Year Rate Adjustment Member
Regulatory Assets, Noncurrent								$ 18,200,000												$ 18,200,000				$ 18,200,000	$ 18,200,000
2022 Look-back Filing [Member] | Entergy Mississippi [Member] | Maximum [Member]
Public Utilities, Interim Rate Increase (Decrease), Amount					$ 27,900,000
Public Utilities, Interim Rate Increase (Decrease), Percentage					2.00%
2022 Look-back Filing [Member] | Entergy Mississippi [Member] | Subsequent Event [Member]
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount																										$ 19,000,000
2023 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount						$ 39,800,000
Public Utilities, Requested Return on Equity, Percentage						6.67%
Public Utilities, Approved Rate Increase (Decrease), Amount				26,500,000
2023 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member] | Natural Gas, US Regulated [Member]
Oil and Gas, Average Production Cost Per Unit | $ / unit			4.50
2023 Formula Rate Plan Filing [Member] | Entergy New Orleans [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount					$ 25,600,000
Authorized return on common equity					9.35%
2023 Formula Rate Plan Filing [Member] | Entergy New Orleans [Member] | Electricity [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount					$ 17,400,000
Earned return on common equity					7.34%
Additional revenue increase due to previously approved amounts					$ 3,400,000
2023 Formula Rate Plan Filing [Member] | Entergy New Orleans [Member] | Natural Gas, US Regulated [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount					$ 8,200,000
Earned return on common equity					3.52%
2023 Formula Rate Plan Filing [Member] | Entergy New Orleans [Member] | Subsequent Event [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount		500,000
Requested reduction to formula rate plan revenues resulting from alleged errors		8,300,000
Proposed formula rate plan rate mitigation through offsets to regulatory liabilities		12,000,000
2023 Formula Rate Plan Filing [Member] | Entergy Arkansas [Member] | Subsequent Event [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount		130,300,000
Public Utilities, Requested Return on Equity, Percentage																					8.11%
Projected Revenue Deficiency																					$ 80,500,000
2023 Formula Rate Plan Filing [Member] | Entergy Arkansas [Member] | Subsequent Event [Member] | Maximum [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount		$ 88,600,000
Public Utilities, Requested Return on Equity, Percentage		4.00%
Return on Equity and Capital Structure Complaints [Member] | System Energy [Member]
Earned return on common equity															10.94%
Recommended adjustment to earned return on equity															9.32%
Return on equity complaint, estimated annual rate reduction			$ 28,000,000															28,000,000
Payments for Legal Settlements																		39,000,000
Return on Equity and Capital Structure Complaints [Member] | System Energy [Member] | Maximum [Member]
ALJ recommended equity capital structure, percentage															48.15%
2022 Formula Rate Plan | Entergy Arkansas [Member]
Public Utilities, Requested Return on Equity, Percentage																									7.29%
Projected Revenue Deficiency																									$ 49,800,000
Entergy Cost Recovery Rider | Entergy Arkansas [Member]
Energy Cost Recovery Rider Rate Per kWh																							0.01639
Entergy Cost Recovery Rider | Entergy Arkansas [Member] | 2021 February Winter Storms
Deferred Fuel Cost						$ 32,000,000											$ 32,000,000						$ 32,000,000
Entergy Cost Recovery Rider | Entergy Arkansas [Member] | Subsequent Event [Member]
Energy Cost Recovery Rider Rate Per kWh																						$ 0.01883
Requested Energy Cost Recovery Rider Rate Per kWh																						$ 0.01883
2022 Formula Rate Plan Filing | Entergy Louisiana [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount				$ 70,700,000
Earned return on common equity				8.33%
Projected Revenue Deficiency				$ 65,900,000
Prospective return on common equity opportunity				8.38%
Distribution recovery mechanism revenue requirement				$ 6,000,000
Public Utilities, Approved Rate Increase (Decrease), Amount				85,200,000
2022 Formula Rate Plan Filing | Entergy Louisiana [Member] | Maximum [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount				$ 4,900,000
Annual power management rider [Member] | Entergy Mississippi [Member]
Regulatory Assets, Noncurrent			4,100,000															4,100,000
Grid modernization rider [Member] | Entergy Mississippi [Member]
Regulatory Assets, Noncurrent			$ 4,300,000															$ 4,300,000