Rate And Regulatory Matters (Narrative) (Details)			1 Months Ended																																																													2 Months Ended	3 Months Ended		6 Months Ended	8 Months Ended		9 Months Ended		10 Months Ended	11 Months Ended	12 Months Ended											15 Months Ended	20 Months Ended	24 Months Ended	36 Months Ended			213 Months Ended
	Oct. 26, 2021 USD ($)	Jan. 01, 2018 USD ($)	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 ($)	Jun. 30, 2022 USD ($)	May 31, 2022 USD ($) shares	Apr. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Feb. 28, 2022 USD ($)	Jan. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Oct. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Aug. 31, 2021 USD ($)	Jul. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)	May 31, 2021 USD ($)	Apr. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Feb. 28, 2021 USD ($)	Dec. 31, 2020 USD ($)	Nov. 30, 2020 USD ($)	Oct. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Jul. 31, 2020 USD ($)	Jun. 30, 2020 USD ($)	May 31, 2020 USD ($)	Apr. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Feb. 29, 2020 USD ($)	Dec. 31, 2019 USD ($)	Oct. 31, 2019 USD ($)	Sep. 30, 2019	Aug. 31, 2019 USD ($)	Jul. 31, 2019 USD ($)	Jun. 30, 2019	May 31, 2019 USD ($)	Mar. 31, 2019 USD ($)	Jan. 31, 2019	Dec. 31, 2018 USD ($)	Oct. 31, 2018 USD ($)	Sep. 30, 2018	Aug. 31, 2018 USD ($)	Jul. 31, 2018 USD ($)	May 31, 2018 USD ($)	Mar. 31, 2018 USD ($) $ / kWh	Feb. 28, 2018 USD ($)	Dec. 31, 2017 USD ($)	Mar. 31, 2017 $ / kWh	Jan. 31, 2017	Apr. 30, 2016	May 31, 2015 USD ($)	Aug. 31, 2014 USD ($) $ / unit shares	Jun. 30, 2014 USD ($)	Jan. 31, 2014 USD ($)	Jul. 31, 2010 USD ($) $ / unit shares	Aug. 31, 2008 USD ($) $ / unit shares	Jul. 31, 2008 USD ($) shares	Aug. 31, 2020 USD ($)	Oct. 31, 2020 USD ($)	Mar. 31, 2020 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)	Aug. 31, 2020 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jul. 31, 2021 USD ($)	Dec. 31, 2023 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) $ / kWh	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Apr. 23, 2018	Dec. 31, 2021 USD ($)	Aug. 31, 2024 USD ($)	Aug. 31, 2024 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2019 USD ($)	Sep. 30, 2021 USD ($)	Feb. 01, 2023 USD ($)	Nov. 30, 2021 USD ($)	Nov. 30, 2019 USD ($)	Mar. 31, 2016 USD ($)	Feb. 29, 2012 shares	Apr. 30, 2010 USD ($)	Aug. 26, 2008 USD ($)	Jul. 29, 2008 USD ($)	Apr. 30, 2008 USD ($)
Regulatory Assets [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21.00%																																																																																	35.00%	35.00%
Asset Write-Offs, Impairments, And Related Charges																																																																												$ (163,464,000)		$ 263,599,000		$ 26,379,000
Deferred Fuel Cost				$ 710,401,000												$ 324,394,000																																																				$ 324,394,000		$ 710,401,000						710,401,000		324,394,000								$ 324,394,000
Regulatory Assets, Noncurrent				6,036,397,000												6,613,256,000																																																				6,613,256,000		6,036,397,000						6,036,397,000		6,613,256,000								6,613,256,000
Regulatory Liability, Noncurrent				2,324,590,000												2,643,845,000																																																				2,643,845,000		2,324,590,000						2,324,590,000		2,643,845,000								2,643,845,000
Increase (Decrease) in Regulatory Liabilities																																																																												$ (266,559,000)		$ 43,631,000		$ 238,669,000
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service																																																																												2.80%		2.70%		2.80%
Construction work in progress				1,844,171,000												1,511,966,000																																																				1,511,966,000		1,844,171,000						$ 1,844,171,000		$ 1,511,966,000								1,511,966,000
Long-term debt																																																																												6,019,835,000		8,308,427,000		$ 12,619,201,000
Storm Reserve Escrow Account				401,955,000												33,186,000																																																				33,186,000		401,955,000						401,955,000		33,186,000								33,186,000
Other Regulatory Charges Credits Net																																																																												669,403,000		111,628,000		14,609,000
Reduction of income tax expense											$ 283,000,000
Replacement Reserve Escrow				402,000,000												49,000,000																																																				49,000,000		402,000,000						402,000,000		49,000,000								49,000,000
Income Tax Expense (Benefit)																																																																												(38,978,000)		191,374,000		(121,506,000)
Storm Reserve Escrow Account				401,955,000												33,186,000																																																				33,186,000		401,955,000						401,955,000		33,186,000								33,186,000
4.00% Series mortgage bonds due July 2022
Regulatory Assets [Line Items]
Debt Instrument, Interest Rate, Stated Percentage											4.00%
Repayments of First Mortgage Bond											$ 650,000,000
Mortgage Bonds Zero Point Six Two Percent Series Due November 2023
Regulatory Assets [Line Items]
Debt Instrument, Interest Rate, Stated Percentage											0.62%
Entergy Wholesale Commodities [Member]
Regulatory Assets [Line Items]
Asset Write-Offs, Impairments, And Related Charges																																																																												1,000,000		264,000,000		19,000,000
Asset Write-Offs, Impairments, And Related Charges																																																																												$ (163,464,000)		$ 263,625,000		$ 26,623,000
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service																																																																												6.60%		7.50%		12.70%
Construction work in progress				1,000,000												1,000,000																																																				1,000,000		1,000,000						$ 1,000,000		$ 1,000,000								1,000,000
Cash collateral posted				8,000,000												8,000,000																																																				8,000,000		8,000,000						8,000,000		8,000,000								8,000,000
Income Tax Expense (Benefit)																																																																												$ 54,465,000		(25,381,000)		$ 104,937,000
Entergy Louisiana [Member]
Regulatory Assets [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent																																																																																21.00%
Rate Increase Included in Formula Rate Plan																																																	$ 4,800,000																																	$ 103,000,000
Formula rate plan increase excluding Tax Cuts and Jobs Act Credits																																																	$ 98,000,000
Bond proceeds loaned by LCDA to LURC under Louisiana Act 55 financing																																																										$ 309,000,000
Annual customer credits																																																											$ 6,200,000
LCDA issuance of bonds under Louisiana Act 55 financing																																																										314,850,000
Amount transfered to restricted escrow account as storm damage reserve																																																										16,000,000
Amortization period of cost																																																																												27 years
Earned Return on Common Equity Resulting From Revenue-Neutral Realignments to Other Recovery Mechanisms																																																	8.16%
Earned Return on Common Equity Excluding Realignments																																																	9.88%
Earned return on common equity																																																																																			10.61%
Income before income taxes																																																																												$ 693,017,000		774,393,000		$ 700,028,000
Deferred Fuel Cost				159,183,000												45,374,000																																																				45,374,000		159,183,000						159,183,000		45,374,000								45,374,000
Minimum customer benefits																																																											$ 30,800,000
Bond proceeds transfered to company under Louisiana Act 55 financing																																																										$ 293,000,000
Regulatory Assets, Noncurrent				2,056,179,000												2,776,666,000																																																				2,776,666,000		2,056,179,000						2,056,179,000		2,776,666,000								2,776,666,000
Public Utilities, Requested Return on Equity, Percentage																																9.80%																																																		9.66%
Regulatory Liability, Noncurrent				1,037,962,000												1,042,597,000																																																				1,042,597,000		1,037,962,000						$ 1,037,962,000		1,042,597,000								1,042,597,000
Public Utilities, Requested Rate Increase (Decrease), Amount																																										$ 118,700,000																																						63,000,000
Rate At Which Electricity Sold To Retail Customers | $ / kWh																																																																												0.046
Formula rate plan revenue decrease																																																$ 17,600,000																																			$ 8,900,000
Increase (Decrease) in Regulatory Liabilities																																																																												$ (4,783,000)		(16,478,000)		71,698,000
Monthly regulatory liability established to reflect tax benefits already included in retail rates		$ 9,100,000
Projected increase in revenue requirement																									$ 1,200,000	$ 35,000,000																																													$ 108,000,000
Bandwidth around midpoint of return on equity																																6000.00%
Construction work in progress				736,969,000												847,924,000																																																				847,924,000		736,969,000						736,969,000		847,924,000								847,924,000
Amount transfer from restricted escrow account as storm damage reserve																											$ 257,000,000
Long-term debt																																																																												2,942,771,000		3,769,166,000		3,675,083,000
Increase (Reduction) in income tax resulting from Act 55 financing settlement																																																																		$ 32,000,000
Reduction of income tax expense due reversal of UTPs																																																																		58,000,000
Increase to income tax expense due to reduction of the DTA																																																																		26,000,000
Regulatory charge due to LPSC Act 55 Financing Order - Gross																																																																		29,000,000
Regulatory charge due to LPSC Act 55 Financing Order - Net of Tax																																																																		$ 21,000,000
Fuel Costs																																																																			$ 225,000,000
Interest income excluded in 2019 FRP filing																																$ 251,000
Total Restoration Costs For Repair and Replacement of Electrical System including carrying costs												$ 2,640,000,000
Storm Reserve Escrow Account				293,406,000										$ 290,000,000		0							$ 290,000,000																																													0		293,406,000						293,406,000		0								0
Aggregate principal amount of system restoration bonds authorization requested														3,186,000,000
Deferred Fuel Cost - Net Asset				327,300,000												213,500,000																																																				213,500,000		327,300,000						327,300,000		213,500,000								213,500,000
Other Regulatory Charges Credits Net																																																																												148,871,000		38,245,000		(584,000)
Reclassification from utility plant to other regulatory assets													$ 1,942,000,000																																																																$ 1,942,000,000												$ 1,942,000,000
LCDA issuance of bonds under Act 293 financing											$ 3,194,000,000
Class preferred non voting membership interest units acquired in majority owned subsidiary | shares											31,635,718.7221
LURC's percentage of annual dividends											1.00%
ELL's percentage of annual dividends											99.00%
Preferred Stock, Dividend Rate, Percentage											7.00%
Preferred Stock, Liquidation Preference, Value											$ 100
Proceeds from Contributed Capital											1,000,000,000
Proceeds from capital contribution used to fund Hurricane Ida escrow											1,000,000,000
Funds withdrawn from Hurricane Ida escrow and applied to restoration costs											1,000,000,000
Restricted storm escrow funds											290,000,000
Reduction of income tax expense											290,000,000
Regulatory charge recorded as a result of reduction in income tax expense											224,000,000																																																																	224,000,000
Regulatory charge recorded as a result of reduction in income tax expense, net of tax											165,000,000																																																																	165,000,000
LURC's beneficial interest in the storm trust											31,600,000
Replacement Reserve Escrow				293,400,000																																																																		293,400,000						293,400,000
Income Tax Expense (Benefit)																																																																												(162,853,000)		120,409,000		(382,324,000)
Interest income excluded in 2019 FRP filing																																251,000
Fuel Costs																																																																			$ 225,000,000
Total Restoration Costs For Repair and Replacement of Electrical System including carrying costs												2,640,000,000
Storm Reserve Escrow Account				293,406,000										290,000,000		0							290,000,000																																													0		293,406,000						293,406,000		0								0
Aggregate principal amount of system restoration bonds authorization requested														3,186,000,000
Entergy Louisiana [Member] | Mortgage Bonds Zero Point Six Two Percent Series Due November 2023
Regulatory Assets [Line Items]
Repayments of First Mortgage Bond											435,000,000
Entergy Louisiana [Member] | Unsecured Term Loan due June 2023
Regulatory Assets [Line Items]
Repayments of Unsecured Debt											1,200,000,000
Entergy Louisiana [Member] | Hurricane Ida
Regulatory Assets [Line Items]
Carrying costs associated with storm restoration costs						$ 59,100,000
Entergy Louisiana [Member] | Hurricanes Ida, Laura, Delta, Zeta, and Winter Storm Uri
Regulatory Assets [Line Items]
Carrying costs associated with storm restoration costs				59,200,000
Entergy Louisiana [Member] | Mortgage Bonds Zero Point Six Two Percent Series Due November Two Thousand Twenty Three
Regulatory Assets [Line Items]
Long-term Debt, Gross				$ 665,000,000												1,100,000,000																																																				1,100,000,000		$ 665,000,000						$ 665,000,000		1,100,000,000								1,100,000,000
Debt Instrument, Interest Rate, Stated Percentage				0.62%																																																																		0.62%						0.62%
Entergy Louisiana [Member] | Hurricane Rita [Member]
Regulatory Assets [Line Items]
Reduction to Louisiana Act 55 financing savings obligation regulatory liability due to Tax Cuts and Jobs Act		$ 22,300,000
Minimum amount of benefits committed to pass on to the customers																																																																																																				$ 40,000,000
Prospective Annual rate reductions for five years																																																																																																				$ 8,000,000
Bond issued by LCDA																																																																																																			$ 687,700,000
Amount transfer to restricted escrow account as storm damage reserve by corporation																																																															$ 152,000,000
Amount Transferred to Entergy Louisiana																																																															527,000,000
Proceed from loan by LCDA to corporation LURC																																																															679,000,000
Amount used to acquire membership interest units in wholly owned Subsidiary																																																															$ 545,000,000
Class preferred, non-voting, membership interest units | shares																																																															5,449,861.85
Annual distribution rate																																																															10.00%
Amount withdrawn from restricted escrow account as approved by units of wholly owned subsidiary																																																															$ 17,800,000
Entergy Louisiana [Member] | Hurricane Gustav and Ike [Member]
Regulatory Assets [Line Items]
Reduction to Louisiana Act 55 financing savings obligation regulatory liability due to Tax Cuts and Jobs Act																																																					$ 2,700,000																															$ 2,700,000
Minimum amount of benefits committed to pass on to the customers																																																																																																	$ 43,300,000
Prospective Annual rate reductions for five years																																																																																																	$ 8,700,000
Bond issued by LCDA																																																													$ 713,000,000
Amount transfer to restricted escrow account as storm damage reserve by corporation																																																													290,000,000
Amount Transferred to Entergy Louisiana																																																													412,700,000
Proceed from loan by LCDA to corporation LURC																																																													702,700,000
Amount used to acquire membership interest units in wholly owned Subsidiary																																																													$ 412,700,000
Class preferred, non-voting, membership interest units | shares																																																													4,126,940.15
Annual distribution rate																																																													9.00%
Liquidation price per unit | $ / unit																																																													100
Net worth required under terms of membership interest																																																													$ 1,000,000,000
Entergy Louisiana [Member] | Winter Storm Uri
Regulatory Assets [Line Items]
Fuel Costs																									166,000,000
Fuel Costs																									166,000,000
Entergy Louisiana [Member] | Hurricanes Laura, Delta, Zeta, and Winter Storm Uri
Regulatory Assets [Line Items]
Deferred Storm and Property Reserve Deficiency, Noncurrent																							1,680,000,000
Non-capital storm costs																							380,000,000
Total Restoration Costs For Repair and Replacement of Electrical System																							2,060,000,000.00
Total Restoration Costs For Repair and Replacement of Electrical System including carrying costs												32,000,000		2,100,000,000									2,110,000,000
Storm carrying costs														51,000,000
Carrying costs associated with storm restoration costs																																																																						$ 3,000,000
Total Restoration Costs For Repair and Replacement of Electrical System including carrying costs												32,000,000		2,100,000,000									2,110,000,000
Entergy Louisiana [Member] | Hurricane Ida
Regulatory Assets [Line Items]
Deferred Storm and Property Reserve Deficiency, Noncurrent												1,960,000,000	1,000,000,000	1,000,000,000				$ 1,000,000,000																																																											1,000,000,000												1,000,000,000		$ 1,000,000,000
Non-capital storm costs												586,000,000
Total Restoration Costs For Repair and Replacement of Electrical System						2,640,000,000						2,540,000,000
Total Restoration Costs For Repair and Replacement of Electrical System including carrying costs												2,600,000,000
Aggregate principal amount of system restoration bonds authorization requested																		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
Aggregate principal amount of system restoration bonds authorization requested																		1,000,000,000																																																																									1,000,000,000
Entergy Louisiana [Member] | Hurricanes Ida, Laura, Delta, Zeta, and Winter Storm Uri
Regulatory Assets [Line Items]
Total Restoration Costs For Repair and Replacement of Electrical System				$ 2,570,000,000
Aggregate principal amount of system restoration bonds authorization requested				1,657,000,000																																																																		1,657,000,000						$ 1,657,000,000
Aggregate principal amount of system restoration bonds authorization requested				1,657,000,000																																																																		1,657,000,000						$ 1,657,000,000
Entergy Mississippi [Member]
Regulatory Assets [Line Items]
Amortization period of cost																																																																												27 years
Payments to Acquire Other Property, Plant, and Equipment																																																																												$ (105,149,000)		0		(28,612,000)
Authorized Storm Damage Reserve Balance				15,000,000																																																																		15,000,000						15,000,000
Monthly storm damage provision																																																																												1,750,000
Balance At Which Storm Damage Accrual Will Return To Current Level																																										$ 10,000,000																																		10,000,000
Income before income taxes																																																																												231,131,000		212,157,000		167,773,000
Deferred Fuel Cost				143,211,000												121,878,000																																																				121,878,000		143,211,000						143,211,000		121,878,000								121,878,000
Projected under-recovery Energy Cost Recovery Rider				200,000,000																																																																		200,000,000						200,000,000
Projected Over-Recovery Energy Cost Recovery Rider																											$ 24,400,000																																																																		$ 80,600,000	$ 39,600,000
Regulatory Assets, Noncurrent				519,460,000												462,432,000																																																				462,432,000		519,460,000						519,460,000		462,432,000								462,432,000
Regulatory Liability, Noncurrent				79,865,000												49,313,000																																																				49,313,000		79,865,000						79,865,000		49,313,000								49,313,000
Increase (Decrease) in Regulatory Liabilities																																																																												20,165,000		21,930,000		(18,672,000)
Construction work in progress				170,191,000												95,452,000																																																				95,452,000		170,191,000						170,191,000		95,452,000								95,452,000
Interim adjustment to energy cost recovery rider credit to customers																																50,000,000
Long-term debt																																																																												249,266,000		398,284,000		165,385,000
Deferred Fuel Cost - Net Asset				143,200,000					$ 291,700,000						$ 100,000,000	121,900,000																																																				121,900,000		143,200,000						143,200,000		121,900,000								121,900,000
Other Regulatory Charges Credits Net																																																																												38,017,000		5,913,000		(15,219,000)
Replacement Reserve Escrow				33,500,000												48,900,000																																																				48,900,000		33,500,000						33,500,000		48,900,000								48,900,000
MPSC settlement refund									235,000,000
Deferred Fuel Cost - Net Liability									$ 51,100,000
Income Tax Expense (Benefit)																																																																												$ 54,864,000		45,323,000		$ 27,190,000
Entergy Gulf States Louisiana [Member] | Hurricane Rita [Member]
Regulatory Assets [Line Items]
Bond issued by LCDA																																																																																																		$ 278,400,000
Amount transfer to restricted escrow account as storm damage reserve by corporation																																																														$ 87,000,000
Amount Transferred to Entergy Louisiana																																																														187,700,000
Proceed from loan by LCDA to corporation LURC																																																														274,700,000
Amount used to acquire membership interest units in wholly owned Subsidiary																																																														$ 189,400,000
Class preferred, non-voting, membership interest units | shares																																																														1,893,918.39
Annual distribution rate																																																														10.00%
Liquidation price per unit | $ / unit																																																														100
Net worth required under terms of membership interest																																																														$ 1,000,000,000
Amount withdrawn from restricted escrow account as approved by units of wholly owned subsidiary																																																														$ 1,700,000
Entergy New Orleans [Member]
Regulatory Assets [Line Items]
Public Utilities, Approved Return on Equity, Percentage												9.35%																																																																				9.35%
Amortization period of cost																																																																												27 years
Earned return on common equity												6.88%																																																																				6.26%
Amount of Hurricane Issac storm cost to be recovered through securitization																																																									$ 31,800,000
Replenishment amount for storm reserve spending																																																									63,900,000
Income before income taxes																																																																												$ 88,378,000		37,734,000		$ 45,131,000
Deferred Fuel Cost				10,153,000												0																																																				0		10,153,000						10,153,000		0								0
Repayment of long-term payable due to Entergy Louisiana																																																																												(1,326,000)		(1,618,000)		(1,838,000)
Regulatory Assets, Noncurrent				202,112,000												248,617,000																																																				248,617,000		202,112,000						202,112,000		248,617,000								248,617,000
Up Front Financing Costs On Issuance Of Bonds To Recover Storm Damage Restoration Costs																																																									$ 3,000,000
Public Utilities, Requested Rate Increase (Decrease), Amount							$ 24,700,000					$ 42,100,000								$ 64,000,000															$ 45,000,000	$ 45,000,000	$ 39,000,000
Provision for Rate Refund																																				10,000,000																																														$ 10,000,000
Regulatory Assets for Rate Case Costs and Algiers Customer Migration Costs																																				12,000,000																																														12,000,000
Regulatory Assets for Retired General Plant Costs																																				10,000,000																																														10,000,000
Public Utilities, Approved Rate Increase (Decrease), Amount	$ 49,500,000
Increase (Decrease) in Regulatory Liabilities																																																																												(8,639,000)		4,985,000		$ (4,728,000)
Benefit to electric customers related to reduction in income tax expense under Tax Act																																																			$ 8,200,000
Benefit to gas customers related to reduction in income tax expense under Tax Act																																																			$ 1,300,000
Percent Equity in Proposed Common Equity Ratio																																																																																51.00%
Percent Debt in Proposed Common Equity Ratio																																																																																49.00%
FERC staff argued over-recovery in depreciation expense for capital additions																																																																																$ 2,200,000
Common Equity Tier One Capital Ratio																										0.50																																													0.50									0.50
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service																																																																																2.00%
Proposed public utilities, property, plant, and equipment, disclosure of composite depreciation rate for plants in service																																																																																3.00%
Proposed recovery of certain rate case expenses																																																																																$ 1,400,000
Opportunity Sales Refund to be Redirected to Cares Program																															$ 7,000,000
Non-Securitized Storm Reserves Reallocated to Cares Program																															$ 15,000,000
public utilities proposed customer credits																														$ 100
Credits to customer bills resulting from City Council Cares Program				4,300,000																																																																		4,300,000						4,300,000
Construction work in progress				39,607,000												22,199,000																																																				22,199,000		39,607,000						39,607,000		22,199,000								22,199,000
Long-term debt																																																																												0		183,403,000		138,925,000
Withdrawal from storm reserves							44,000,000																	$ 44,000,000
Storm Reserve Escrow Account				75,000,000												0																																																				0		75,000,000						75,000,000		0								0
Deferred Fuel Cost - Net Asset				14,200,000																																																																		14,200,000						14,200,000
Other Regulatory Charges Credits Net																																																																												19,596,000		13,177,000		1,854,000
Replacement Reserve Escrow				75,000,000.0																																																																		75,000,000.0						75,000,000.0
Deferred Fuel Cost - Net Liability																(3,500,000)																																																				(3,500,000)										(3,500,000)								(3,500,000)
Regulatory credits funded by certain regulatory liabilities							13,900,000
Income Tax Expense (Benefit)																																																																												24,277,000		5,936,000		(4,207,000)
Storm Reserve Escrow Account				75,000,000												0																																																				0		75,000,000						75,000,000		0								0
Entergy New Orleans [Member] | Hurricane Rita [Member]
Regulatory Assets [Line Items]
Bond issued by LCDA				209,300,000																																																																		209,300,000						209,300,000
Amount transfer to restricted escrow account as storm damage reserve by corporation				200,000,000
Up Front Financing Costs On Issuance Of Bonds To Recover Storm Damage Restoration Costs				1,800,000
Proceeds from Debt, Net of Issuance Costs				201,800,000
Entergy New Orleans [Member] | Hurricane Zeta
Regulatory Assets [Line Items]
Total Restoration Costs For Repair and Replacement of Electrical System																						$ 36,000,000
Estimated costs included in filing for total restoration costs for repair and replacement of electrical system																						$ 7,000,000
Prudently incurred storm restoration costs											33,000,000
Excess withdrawn replacement reserve escrow											$ 7,000,000
Entergy New Orleans [Member] | Hurricane Ida
Regulatory Assets [Line Items]
Replenishment amount for storm reserve spending														150,000,000
Total Restoration Costs For Repair and Replacement of Electrical System										$ 170,000,000
Withdrawal from storm reserves				125,000,000
Carrying costs associated with storm restoration costs																																																																						9,000,000
Estimated costs included in filing for total restoration costs for repair and replacement of electrical system										11,000,000
Excess withdrawn replacement reserve escrow																		7,000,000																																																																									7,000,000
Replacement Reserve Escrow																		39,000,000																																																																									39,000,000
Reduction to requested total restoration costs for repair and replacement of electrical system										46,000,000
Outages from storm																			100.00%
initial funding for storm reserve spending								$ 75,000,000
storm restoration costs approved for securitization							206,000,000
storm securitization costs approved for securitization allocated to Hurricane Ida							125,000,000
Entergy Texas [Member]
Regulatory Assets [Line Items]
Income before income taxes																																																																												353,948,000		254,350,000		218,115,000
Deferred Fuel Cost				258,115,000												48,280,000																																																				48,280,000		258,115,000						258,115,000		48,280,000								48,280,000
Regulatory Assets, Noncurrent				578,682,000												421,333,000																																																				421,333,000		578,682,000						578,682,000		421,333,000								421,333,000
Regulatory Liability, Noncurrent				45,247,000												37,060,000																																																				37,060,000		45,247,000						45,247,000		37,060,000								37,060,000
Increase (Decrease) in Regulatory Liabilities																																																																												(30,499,000)		(28,747,000)		(57,477,000)
Return of excess ADIT through customer bill credits																																																		$ 185,200,000
Refund due customers resulting from lower federal income tax rate																																																		25,000,000
Refund to customers of protected excess accumulated deferred taxes																																																		$ 242,500,000
Construction work in progress				339,139,000												183,965,000																																																				183,965,000		339,139,000						339,139,000		183,965,000								183,965,000
Long-term debt																																																																												606,168,000		127,931,000		937,725,000
Deferred Fuel Cost - Net Asset				258,100,000												48,300,000																																																				48,300,000		258,100,000						258,100,000		48,300,000								48,300,000
Other Regulatory Charges Credits Net																																																																												49,175,000		59,581,000		90,398,000
Income Tax Expense (Benefit)																																																																												$ 50,621,000		25,526,000		3,042,000
Entergy Texas [Member] | Aggregate Senior secured restoration bonds (securitization bonds)
Regulatory Assets [Line Items]
Issuance Of Debt												290,850,000
Entergy Texas [Member] | Hurricanes Laura and Delta and Winter Storm Uri
Regulatory Assets [Line Items]
Deferred Storm and Property Reserve Deficiency, Noncurrent																							200,000,000
Non-capital storm costs																							50,000,000
Total Restoration Costs For Repair and Replacement of Electrical System																243,000,000							250,000,000
Entergy Texas [Member] | Hurricane Harvey
Regulatory Assets [Line Items]
Remaining restoration costs for repair and replacement of electrical system; previously-approved																13,000,000							13,000,000
Remaining restoration costs for repair and replacement of electrical system; previously-approved																13,000,000							$ 13,000,000
Entergy Texas [Member] | Hurricanes Laura and Delta and Winter Storm Uri
Regulatory Assets [Line Items]
Aggregate principal amount of system restoration bonds authorization requested															242,900,000
Amount to be charged to storm reserve and excluded from securitization																		4,300,000
Black box amount to be excluded from securitization																		5,000,000
Audit attestation costs to be excluded from securitization																		300,000
Reclassification from utility plant to other regulatory assets													153,000,000																																																																153,000,000												153,000,000
Amount to be charged to storm reserve and excluded from securitization																		4,300,000
Black box amount to be excluded from securitization																		5,000,000
Audit attestation costs to be excluded from securitization																		$ 300,000
Aggregate principal amount of system restoration bonds authorization requested															242,900,000
Entergy Texas [Member] | Hurricanes Laura and Delta and Winter Storm Uri | Aggregate Senior secured restoration bonds (securitization bonds)
Regulatory Assets [Line Items]
Issuance Of Debt												290,850,000
Entergy Arkansas [Member]
Regulatory Assets [Line Items]
Incremental Fuel and Replacement Energy Costs																																																												$ 65,900,000
Amortization period of cost																																																																												27 years
Payments to Acquire Other Property, Plant, and Equipment																																																																												$ (1,044,000)		(131,770,000)		(5,988,000)
Income before income taxes																																																																												373,783,000		373,679,000		293,009,000
Deferred Fuel Cost				139,739,000												108,862,000																																																				108,862,000		139,739,000						139,739,000		108,862,000								108,862,000
Regulatory Assets, Noncurrent				1,810,281,000												1,689,678,000																																																				1,689,678,000		1,810,281,000						$ 1,810,281,000		$ 1,689,678,000								1,689,678,000
Public Utilities, Requested Return on Equity, Percentage																																																																												9.65%		9.75%
Regulatory Liability, Noncurrent				475,758,000												743,314,000																																																				743,314,000		475,758,000						$ 475,758,000		$ 743,314,000								743,314,000
Portion of Approved Revenue Requirement Increase Subject to Possible Future Adjustment and Refund to Customers																																														$ 45,700,000
ALJ Recommended Percentage By Which Payments Be Reduced																																																								20.00%
Liability Recorded Related to Estimated Payments Due Utility Operating Companies																																																					35,000,000																															35,000,000											$ 87,000,000
Regulatory Asset Recorded to Represent Estimate of Recoverable Retail Portion of Costs																																																					31,000,000																															$ 31,000,000											$ 75,000,000
Rate At Which Electricity Sold To Retail Customers | $ / kWh																																																			0.01547			0.01164
Increase in Rate At Which Electricity Sold To Retail Customers | $ / kWh																																																			0.01882			0.01547
Increase (Decrease) in Regulatory Liabilities																																																																												(264,054,000)		21,066,000		106,878,000
Tax benefits to customers resulting from tax adjustment rider																									$ 5,600,000																											$ 467,000,000
Refund to customers, plus interest, associated with recalculated bandwidth remedy																														13,700,000
Requested revenue increase resulting from settlement agreement																												$ 68,400,000
Reduced proposed revenue increase resulting from new methodology																												72,600,000																																																		1,000,000
Construction work in progress				417,244,000												241,127,000																																																				241,127,000		417,244,000						417,244,000		241,127,000								241,127,000
Energy Cost Recovery Rider Rate Per kWh																																																																													0.00959		$ 0.01052		$ 0.01462
Reduced proposed increase in revenue requirement to comply with annual revenue constraint																	$ 72,100,000			$ 72,400,000								74,300,000		$ 74,300,000
Annual revenue constraint per rate class percentage									400.00%											400.00%										400.00%
Long-term debt																																																																												232,731,000		719,284,000		1,071,121,000
Deferred Fuel Cost - Net Asset				208,600,000												177,600,000																																																				177,600,000		208,600,000						208,600,000		177,600,000								177,600,000
Other Regulatory Charges Credits Net																																																																												(89,418,000)		(31,501,000)		(35,310,000)
Payments to utility operating companies pursuant to Opportunity Sales Proceeding																																													$ 135,000,000
Income Tax Expense (Benefit)																																																																												$ 80,896,000		75,195,000		47,777,000
Entergy Arkansas [Member] | 2021 February Winter Storms
Regulatory Assets [Line Items]
Deferred Fuel Cost													32,000,000																																																																32,000,000												32,000,000
System Energy [Member]
Regulatory Assets [Line Items]
Public Utilities, Approved Return on Equity, Percentage									9.65%
Incremental Fuel and Replacement Energy Costs																								$ 360,000,000
Earned return on common equity																								10.94%																																																				10.94%
Income before income taxes																																																																												$ (369,421,000)		104,837,000		119,674,000
Recommended adjustment to earned return on equity																								9.32%
Percent Interest in Grand Gulf																																																																												90.00%
Annual renewal lease payments on Grand Gulf Sale-Leaseback																																											$ 17,200,000
LPSC requested rate reduction for ADIT associated with uncertain tax positions resulting from Grand Gulf sale-leaseback																																					$ 512,000,000
Regulatory Assets, Noncurrent				415,121,000												395,546,000																																																				395,546,000		415,121,000						$ 415,121,000		395,546,000								395,546,000
Public Utilities, Approved Equity Capital Structure, Percentage									52.00%
Regulatory Liability, Noncurrent				665,024,000												744,944,000																																																				744,944,000		665,024,000						665,024,000		744,944,000								744,944,000
Increase (Decrease) in Regulatory Liabilities																																																																												21,252,000		40,884,000		140,965,000
FERC staff argued over-recovery in depreciation expense for capital additions																																							$ 32,000,000
First refund period requested authorized rate of return - LPSC																															7.97%
First refund period requested authorized rate of return - MPSC and APSC																															9.24%
First refund period requested authorized rate of return - FERC																															9.49%
Second refund period requested authorized rate of return - MPSC and APSC																															9.15%
Second refund period requested authorized rate of return - LPSC																															7.78%
Second refund period requested authorized rate of return - FERC																															9.09%
First refund period requested authorized rate of return																															10.12%
Second refund period requested authorized rate of return																															9.44%
Interest Portion of LPSC requested rate reduction for ADIT associated with uncertain tax positions resulting from Grand Gulf sale-leaseback				248,000,000																																																																		248,000,000						248,000,000
Remaining NBV of Leased Assets																																	$ 70,000,000
Refund of Lease Payments																																	$ 17,200,000
Future nuclear decommissioning costs allowed by the IRS in cost of goods sold																													$ 102,000,000
Percent of requested deduction allowed by IRS of uncertain decommissioning tax postion																													10.00%
Construction work in progress				102,987,000												97,968,000																																																				97,968,000		102,987,000						102,987,000		97,968,000								97,968,000
Additional unprotected excess ADIT related to uncertain decommissioning tax deduction																														$ 147,000,000
Proposed credit of excess accumulated deferred income taxes resulting from decommissioning uncertain tax position																												17,800,000																																					$ 17,800,000
Long-term debt																																																																												1,022,472,000		662,423,000		1,147,903,000
One-time accumulated deferred income tax credit																										$ 25,200,000
Accumulated deferred income tax credits to customers																										$ 3,400,000
Other Regulatory Charges Credits Net																																																																												503,162,000		26,214,000		(26,531,000)
Estimated Return On Equity Complaint Refund				63,000,000																																																																		63,000,000						63,000,000
Return On Equity Complaint - Estimated Annual Rate Reduction				35,000,000																																																																		35,000,000						35,000,000
Pre-authorization amount for capital improvement projects																								$ 125,000,000
Potential settlement refund										353,000,000
Previously recorded liability related to applicable litigation										37,000,000
Regulatory charge related to System Energy settlement										551,000,000																																																																		551,000,000
Regulatory charge related to System Energy settlement - net of tax										413,000,000																																																																		413,000,000
Regulatory Liability related to potential settlement refund										588,000,000
Income Tax Expense (Benefit)																																																																												$ (92,828,000)		(1,977,000)		$ 20,543,000
System Energy [Member] | First Refund Period [Member]
Regulatory Assets [Line Items]
LPSC requested authorized return on equity for System Energy in return on equity proceeding																																			8.44%				7.81%					7.81%
APSC/MPSC requested authorized return on equity for System Energy in return on equity proceeding																																			8.41%									8.24%
FERC requested authorized return on equity for System Energy in return on equity proceeding																																										9.89%
APSC/MPSC revised argued authorized return on equity for System Energy in return on equity proceeding																																							8.26%
FERC requested authorized return on equity for System Energy in return on equity proceeding, rebuttal																																			9.22%			9.40%
Requested return on equity based on alternative methodology																																																																																					10.26%
System Energy [Member] | Second refund period [Member]
Regulatory Assets [Line Items]
LPSC requested authorized return on equity for System Energy in return on equity proceeding																																			7.89%				7.97%					7.97%
APSC/MPSC requested authorized return on equity for System Energy in return on equity proceeding																																			8.01%									8.41%
Public utilities requested return on equity percentage, median 2nd refund period																																									9.65%
Public utilities requested return on equity percentage, midpoint 2nd refund period																																									9.74%
Modified public utilities requested return on equity percentage based on benchmarks, median 2nd refund period																																									9.91%
Modified public utilities requested return on equity percentage based on benchmarks, midpoint 2nd refund period																																									10.30%
APSC/MPSC revised argued authorized return on equity for System Energy in return on equity proceeding																																							8.32%
FERC requested authorized return on equity for System Energy in return on equity proceeding, rebuttal																																			8.66%			9.63%
System Energy [Member] | Grand Gulf [Member]
Regulatory Assets [Line Items]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage																																																																												11.50%
Entergy Holdings Company LLC [Member]
Regulatory Assets [Line Items]
Class preferred, non-voting, membership interest units | shares																																																										2,935,152.69
Annual distribution rate																																																										7.50%
Liquidation price per unit | $ / unit																																																										100
Net worth required under terms of membership interest																																																										$ 1,750,000,000
Entergy Holdings Company LLC [Member] | Hurricane Katrina and Hurricane Rita
Regulatory Assets [Line Items]
Class preferred non voting membership interest units acquired in majority owned subsidiary | shares											6,843,780.24
Class preferred non voting membership interest units sold in majority owned subsidiary | shares																																																																																																500,000
Entergy Holdings Company LLC [Member] | Hurricane Gustav and Hurricane Ike
Regulatory Assets [Line Items]
Class preferred non voting membership interest units acquired in majority owned subsidiary | shares											4,126,940.15
Entergy Holdings Company LLC [Member] | Hurricane Isaac
Regulatory Assets [Line Items]
Class preferred non voting membership interest units acquired in majority owned subsidiary | shares											2,935,152.69
Entergy Finance Company, LLC
Regulatory Assets [Line Items]
proceeds from issuance of preferred interest distributed from EFC to EHC											$ 1,400,000,000
Proceeds from issuance of preferred interest distributed from EFC to ETR											1,700,000,000
Minimum [Member] | System Energy [Member]
Regulatory Assets [Line Items]
Recommended adjustment to earned return on equity																																																							8.37%
Minimum [Member] | System Energy [Member] | First Refund Period [Member]
Regulatory Assets [Line Items]
Public Utilities, Requested Return on Equity, Percentage																																									10.10%			10.10%																																									8.57%
Minimum [Member] | System Energy [Member] | Second refund period [Member]
Regulatory Assets [Line Items]
Public Utilities, Requested Return on Equity, Percentage																																	8.28%											10.32%
Maximum [Member] | Entergy New Orleans [Member]
Regulatory Assets [Line Items]
Public Utilities, Requested Return on Equity, Percentage																																					9.35%
Public Utilities, Approved Equity Capital Structure, Percentage																																					50.00%
public utilities proposed customer credits																														400
Maximum [Member] | System Energy [Member]
Regulatory Assets [Line Items]
Recommended adjustment to earned return on equity																																																							8.67%
Percent Equity in Proposed Common Equity Ratio																																							37.00%
Percent Debt in Proposed Common Equity Ratio																																							63.00%
LPSC Argued Equity Capital Structure, Percentage																																							49.00%
APSC and MPSC Argued Equity Capital Structure, Percentage																																							35.98%
APSC and MPSC Alternative Argued Equity Capital Structure, Percentage																																							46.75%
FERC Percent Equity in Proposed Common Equity Ratio																																						46.74%
FERC Percent Debt in Proposed Common Equity Ratio																																						53.26%
ALJ Recommended Equity Capital Structure, Percentage																								48.15%
Maximum [Member] | System Energy [Member] | First Refund Period [Member]
Regulatory Assets [Line Items]
Public Utilities, Requested Return on Equity, Percentage																																												10.70%																																									9.52%
Maximum [Member] | System Energy [Member] | Second refund period [Member]
Regulatory Assets [Line Items]
Public Utilities, Requested Return on Equity, Percentage																																	9.11%											10.69%
Montgomery County Power Station | Entergy Texas [Member]
Regulatory Assets [Line Items]
Property, Plant and Equipment, Useful Life																										38 years
Attorney General Litigation Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				15,700,000												20,500,000																																																				20,500,000		15,700,000						$ 15,700,000		20,500,000								20,500,000
Attorney General Litigation Costs [Member] | Entergy Mississippi [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				15,700,000												20,500,000																																																				20,500,000		15,700,000						15,700,000		20,500,000								20,500,000
Opportunity Sales [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				131,800,000												131,800,000																																																				131,800,000		131,800,000						131,800,000		131,800,000								131,800,000
Opportunity Sales [Member] | Entergy Arkansas [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				131,800,000												131,800,000																													116,000,000																							131,800,000		131,800,000						131,800,000		131,800,000					$ 116,000,000			131,800,000
Asset Retirement Obligation Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				1,103,200,000												935,500,000																																																				935,500,000		1,103,200,000						1,103,200,000		935,500,000								935,500,000
Asset Retirement Obligation Costs [Member] | Entergy Louisiana [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				346,300,000												286,600,000																																																				286,600,000		346,300,000						346,300,000		286,600,000								286,600,000
Asset Retirement Obligation Costs [Member] | Entergy Mississippi [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				6,300,000												8,400,000																																																				8,400,000		6,300,000						6,300,000		8,400,000								8,400,000
Asset Retirement Obligation Costs [Member] | Entergy Arkansas [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				562,700,000												489,200,000																																																				489,200,000		562,700,000						562,700,000		489,200,000								489,200,000
Asset Retirement Obligation Costs [Member] | System Energy [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				186,100,000												144,400,000																																																				144,400,000		186,100,000						186,100,000		144,400,000								144,400,000
New Orleans Power Station deferral | Entergy New Orleans [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				2,900,000																																																																		2,900,000						2,900,000
Provision For Storm Damages, Including Hurricane Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				841,300,000												993,600,000																																																				993,600,000		841,300,000						841,300,000		993,600,000								993,600,000
Provision For Storm Damages, Including Hurricane Costs [Member] | Entergy Louisiana [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				472,800,000												773,600,000																																																				773,600,000		472,800,000						472,800,000		773,600,000								773,600,000
Provision For Storm Damages, Including Hurricane Costs [Member] | Entergy New Orleans [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				17,200,000												31,200,000																																																				31,200,000		17,200,000						17,200,000		31,200,000								31,200,000
Provision For Storm Damages, Including Hurricane Costs [Member] | Entergy Texas [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				315,400,000												143,100,000																																																				143,100,000		315,400,000						315,400,000		143,100,000								143,100,000
Provision For Storm Damages, Including Hurricane Costs [Member] | Entergy Arkansas [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				35,900,000												39,300,000																																																				39,300,000		35,900,000						35,900,000		39,300,000								39,300,000
Formula rate plan historical year rate adjustment [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				18,200,000												19,000,000.0																																																				19,000,000.0		18,200,000						18,200,000		19,000,000.0								19,000,000.0
Formula rate plan historical year rate adjustment [Member] | Entergy Mississippi [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				18,200,000												19,000,000.0																																																				19,000,000.0		18,200,000						18,200,000		19,000,000.0								19,000,000.0
Deferred COVID-19 costs
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				120,900,000												133,100,000																																																				133,100,000		120,900,000						120,900,000		133,100,000								133,100,000
Deferred COVID-19 costs | Entergy Louisiana [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				47,800,000												56,300,000																																																				56,300,000		47,800,000						47,800,000		56,300,000								56,300,000
Deferred COVID-19 costs | Entergy Mississippi [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				9,800,000												15,000,000.0																																																				15,000,000.0		9,800,000						9,800,000		15,000,000.0								15,000,000.0
Deferred COVID-19 costs | Entergy New Orleans [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				13,900,000												17,400,000																																																				17,400,000		13,900,000						13,900,000		17,400,000								17,400,000
Deferred COVID-19 costs | Entergy Texas [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				10,400,000												11,700,000																																																				11,700,000		10,400,000						10,400,000		11,700,000								11,700,000
Deferred COVID-19 costs | Entergy Arkansas [Member]
Regulatory Assets [Line Items]
Regulatory Assets, Noncurrent				39,000,000.0												32,600,000																																																				32,600,000		39,000,000.0						39,000,000.0		32,600,000								32,600,000
Subsequent Event [Member] | Entergy Louisiana [Member]
Regulatory Assets [Line Items]
Public Utilities, Approved Return on Equity, Percentage																																																																																								9.50%
Distribution recovery mechanism - amount per year																																																																																								$ 225,000,000
Formula rate plan revenue increase limit - exclusive of riders																																																																																							$ 70,000,000
Deferral of expenditures on vegetation management																																																																																							7,000,000
Distribution recovery mechanism - amount per year																																																																																								$ 225,000,000
Formula rate plan revenue increase limit - exclusive of riders																																																																																							70,000,000
Deferral of expenditures on vegetation management																																																																																							$ 7,000,000
Subsequent Event [Member] | Entergy Louisiana [Member] | Hurricanes Ida, Laura, Delta, Zeta, and Winter Storm Uri
Regulatory Assets [Line Items]
Aggregate principal amount of system restoration bonds authorization requested			$ 1,491,000,000
Aggregate principal amount of system restoration bonds authorization requested			1,491,000,000
Subsequent Event [Member] | Entergy Arkansas [Member]
Regulatory Assets [Line Items]
Energy Cost Recovery Rider Rate Per kWh																																																																											$ 0.016390
Requested Energy Cost Recovery Rider Rate Per kWh																																																																											$ 0.01785
Subsequent Event [Member] | Minimum [Member] | Entergy Louisiana [Member]
Regulatory Assets [Line Items]
Public Utilities, Approved Return on Equity, Percentage																																																																																								9.00%
Subsequent Event [Member] | Maximum [Member] | Entergy Louisiana [Member]
Regulatory Assets [Line Items]
Public Utilities, Approved Return on Equity, Percentage																																																																																								10.00%
Vidalia Purchased Power Agreement [Member]
Regulatory Assets [Line Items]
Regulatory Liability, Noncurrent				95,400,000												106,200,000																																																				106,200,000		95,400,000						95,400,000		106,200,000								106,200,000
Increase (Decrease) in Regulatory Liabilities																																																					$ (30,500,000)
Vidalia Purchased Power Agreement [Member] | Entergy Louisiana [Member]
Regulatory Assets [Line Items]
Regulatory Liability, Noncurrent				95,400,000												106,200,000																																																				106,200,000		95,400,000						95,400,000		106,200,000								106,200,000
Louisiana Act 55 Financing Obligation [Member]
Regulatory Assets [Line Items]
Regulatory Liability, Noncurrent				327,700,000												127,400,000																																																				127,400,000		327,700,000						327,700,000		127,400,000								127,400,000
Louisiana Act 55 Financing Obligation [Member] | Entergy Louisiana [Member]
Regulatory Assets [Line Items]
Regulatory Liability, Noncurrent				327,700,000												127,400,000																																																				127,400,000		327,700,000						327,700,000		127,400,000								127,400,000
Unit Power Sales Agreement [Member]
Regulatory Assets [Line Items]
Regulatory Liability, Noncurrent				249,800,000												0																																																				0		249,800,000						249,800,000		0								0
Unit Power Sales Agreement [Member] | System Energy [Member]
Regulatory Assets [Line Items]
Regulatory Liability, Noncurrent				249,800,000												$ 0																																																				0		249,800,000						249,800,000		$ 0								0
Regulatory Liability, Current				$ 103,500,000																																																																		103,500,000						$ 103,500,000
Grand Gulf [Member] | Entergy Mississippi [Member]
Regulatory Assets [Line Items]
Long-term Contract for Purchase of Electric Power, Share of Plant Output Being Purchased																																																																												40.00%
Electricity [Member] | Entergy New Orleans [Member]
Regulatory Assets [Line Items]
Public Utilities, Requested Return on Equity, Percentage																																															10.50%
Return on equity including performance adder provision																																															10.75%
Public Utilities, Requested Rate Increase (Decrease), Amount									$ 17,100,000			34,100,000								$ 40,000,000															$ 42,000,000	42,000,000	$ 36,000,000
Rider reductions included in decreased rates																																			29,000,000	29,000,000
Public Utilities, Approved Rate Increase (Decrease), Amount	34,900,000						18,200,000													5,200,000
Public Utilities, Interim Rate Increase (Decrease), Amount																	10,000,000
Customer Refund Liability, Current	17,400,000
Additional revenue increase due to previously approved amounts							4,700,000					4,700,000
Natural Gas [Member] | Entergy New Orleans [Member]
Regulatory Assets [Line Items]
Public Utilities, Requested Return on Equity, Percentage																																															10.75%
Public Utilities, Requested Rate Increase (Decrease), Amount												3,300,000								18,800,000															$ 3,000,000	$ 3,000,000	$ 3,000,000
Public Utilities, Approved Rate Increase (Decrease), Amount	$ 14,600,000						1,800,000													300,000
Public Utilities, Interim Rate Increase (Decrease), Amount																	4,500,000
Transmission Cost Recovery Factor Rider [Member] | Entergy Texas [Member]
Regulatory Assets [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																	66,100,000											51,000,000																	$ 2,700,000
Revenue increase resulting from incremental revenue																																																																$ 31,600,000									$ 15,100,000
Public Utilities, Approved Rate Increase (Decrease), Amount																																								$ 2,700,000
Distribution Cost Recovery Factor Rider [Member] | Entergy Texas [Member]
Regulatory Assets [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																			$ 40,200,000									26,300,000						$ 23,600,000
Revenue increase resulting from incremental revenue																												16,300,000						$ 20,400,000																																			$ 6,800,000			$ 13,900,000
Distribution Cost Recovery Factor Rider [Member] | Minimum [Member] | Entergy Texas [Member]
Regulatory Assets [Line Items]
Intervenor recommended disallowance of revenue requirement																																$ 300,000
Distribution Cost Recovery Factor Rider [Member] | Maximum [Member] | Entergy Texas [Member]
Regulatory Assets [Line Items]
Intervenor recommended disallowance of revenue requirement																															$ 4,100,000
2020 Formula Rate Plan
Regulatory Assets [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																																																																																		$ 7,300,000
Public Utilities Temporary Rate Increase Amount																																	$ 24,300,000
2020 Formula Rate Plan | Entergy Louisiana [Member]
Regulatory Assets [Line Items]
Earned return on common equity																			8.45%		8.45%
Public Utilities, Requested Rate Increase (Decrease), Amount																			$ 14,200,000		$ 63,000,000
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount																			64,900,000		50,700,000
2020 Formula Rate Plan | Entergy Louisiana [Member] | Legacy Entergy Louisiana
Regulatory Assets [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount																			32,800,000		27,000,000
2020 Formula Rate Plan | Entergy Louisiana [Member] | Legacy Entergy Gulf States Louisiana
Regulatory Assets [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount																			$ 32,100,000		$ 23,700,000
2020 Formula Rate Plan | Entergy Mississippi [Member]
Regulatory Assets [Line Items]
Public Utilities, Approved Return on Equity, Percentage																																																																																		6.75%
Public Utilities, Requested Return on Equity, Percentage																																																																																6.51%
Public Utilities, Requested Rate Increase (Decrease), Amount																																																																																$ 24,600,000
Cap on 2019 retail revenues																																																																																		2.00%
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount																																																																																23,800,000
2020 Formula Rate Plan | Entergy Arkansas [Member]
Regulatory Assets [Line Items]
Public Utilities, Requested Return on Equity, Percentage																																																																														8.22%				9.07%
Public Utilities, Requested Rate Increase (Decrease), Amount																														$ 88,200,000
Provision for Rate Refund																										$ 43,500,000																																													$ 43,500,000									$ 43,500,000
Reduced proposed revenue increase resulting from new methodology																										43,500,000
Projected Revenue Deficiency																												44,500,000																																								$ 39,800,000										$ 64,300,000				$ 23,900,000
Generation Cost Recovery Rider | Entergy Texas [Member]
Regulatory Assets [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount							5,700,000							5,000,000	$ 88,300,000		88,300,000									$ 86,000,000		$ 91,000,000																																										92,800,000
Revenue increase resulting from incremental revenue																																																																						$ 4,500,000
Unit Power Sales Agreement [Member] | System Energy [Member]
Regulatory Assets [Line Items]
New Orleans City Council Witness Recommended Refund																																																																																											$ 98,800,000
New Orleans City Council Recommended Hypothetical Equity Ratio Prospectively				48.15%																																																																		48.15%						48.15%
Amount of refunds ordered in a given year											50,000,000
FERC Staff Recommended Refund												$ 106,600,000	84,100,000
LPSC estimated refund without interest											286,000,000
New Orleans City Council proposed refunds related to the money pool											51,700,000
Reduction in the revenue requirement - money pool included in short-term debt											1,500,000
Reduction in revenue requirement - money pool credited through UPSA											1,900,000
Reduction in revenue requirement for every $50M in refunds											1,900,000
Potential settlement refund					$ 18,000,000
Regulatory Liability, Current				$ 103,500,000																																																																		$ 103,500,000						$ 103,500,000
Disallowance of future sale-leaseback renewal costs recovery				11,500,000
Collective refunds and interest sought by public utilities											700,000,000
Unit Power Sales Agreement [Member] | Subsequent Event [Member] | Entergy Louisiana [Member]
Regulatory Assets [Line Items]
Total Refunds Received			27,800,000
Unit Power Sales Agreement [Member] | Subsequent Event [Member] | Entergy New Orleans [Member]
Regulatory Assets [Line Items]
Total Refunds Received			34,000,000
Unit Power Sales Agreement [Member] | Subsequent Event [Member] | Entergy Arkansas [Member]
Regulatory Assets [Line Items]
Total Refunds Received			41,700,000
Unit Power Sales Agreement [Member] | Subsequent Event [Member] | System Energy [Member]
Regulatory Assets [Line Items]
Total Refunds Paid			103,500,000
Calculated refund of sale-leaseback renewal rental costs, including interest			89,800,000
Calculated net refund for excess depreciation expense			$ 13,700,000
2021 Formula Rate Plan | Entergy Louisiana [Member]
Regulatory Assets [Line Items]
Rate Increase Included in Formula Rate Plan											$ 65,300,000
Earned return on common equity											8.33%
Formula rate plan revenue increase											$ 152,900,000
2021 Formula Rate Plan | Entergy Louisiana [Member] | Legacy Entergy Louisiana
Regulatory Assets [Line Items]
Formula rate plan revenue increase											86,000,000
2021 Formula Rate Plan | Entergy Louisiana [Member] | Legacy Entergy Gulf States Louisiana
Regulatory Assets [Line Items]
Formula rate plan revenue increase											$ 66,900,000
2021 Formula Rate Plan | Entergy Mississippi [Member]
Regulatory Assets [Line Items]
Rate Increase Included in Formula Rate Plan																								$ 44,300,000
Public Utilities, Requested Return on Equity, Percentage																					6.12%			6.69%
Public Utilities, Requested Rate Increase (Decrease), Amount																					$ 48,200,000			$ 95,400,000
Demand side management costs																								3,900,000
Formula rate plan revenue increase including demand side management costs																								48,200,000
Interim increase in formula rate plan revenues																					17,500,000			16,800,000
Interim rate adjustment																					1,700,000			1,700,000
Total interim rate adjustments																								18,500,000
Interim increase in formula rate plan revenues due to adjustments																								$ 22,100,000
Cap on 2020 retail revenues																								2.00%
Formula rate plan increase related to COVID-19 non-bad debt expense																					3,700,000
Other Regulatory Charges Credits Net																					$ 19,900,000
2021 Formula Rate Plan | Entergy Arkansas [Member]
Regulatory Assets [Line Items]
Public Utilities, Requested Return on Equity, Percentage																																																																												7.65%				7.92%
Public Utilities, Requested Rate Increase (Decrease), Amount																	$ 82,200,000			$ 108,700,000
Projected Revenue Deficiency																																																																												$ 89,200,000		$ 19,400,000
Projected Increase in Revenue Requirement																																																																												62,800,000
2021 Formula Rate Plan | Maximum [Member] | Entergy Mississippi [Member]
Regulatory Assets [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Percentage																								4.00%
System Energy Formula Rate Annual Protocols Formal Challenge | Entergy Mississippi [Member]
Regulatory Assets [Line Items]
Payments to utility operating companies pursuant to Opportunity Sales Proceeding					235,000,000					$ 235,000,000
Amount of refunds ordered in a given year									$ 80
Amount of retail customers receiving bill credit									460,000
MPSC settlement refund					198,300,000		$ 36,700,000
System Energy Formula Rate Annual Protocols Formal Challenge | System Energy [Member]
Regulatory Assets [Line Items]
Estimated Financial Impact														53,000,000
Portion of estimated financial impact attributable to sale-leaseback payments														$ 17,000,000
2022 Formula Rate Plan | Entergy Mississippi [Member]
Regulatory Assets [Line Items]
Rate Increase Included in Formula Rate Plan													$ 48,600,000
Public Utilities, Requested Return on Equity, Percentage										5.99%			6.70%
Public Utilities, Requested Rate Increase (Decrease), Amount										$ 48,600,000			$ 69,000,000
Interim fuel refund for cumulative over-recovery									$ 14,100,000
Interim increase in formula rate plan revenues										$ 34,300,000			34,500,000
Interim increase in formula rate plan revenues due to adjustments													$ 24,300,000
Other Regulatory Charges Credits Net									22,600,000
Cap on 2021 retail revenues												2.00%
2022 Formula Rate Plan | Entergy Arkansas [Member]
Regulatory Assets [Line Items]
Public Utilities, Requested Return on Equity, Percentage																																																																														8.38%
Public Utilities, Requested Rate Increase (Decrease), Amount					102,800,000				119,900,000
Reduced proposed increase in revenue requirement to comply with annual revenue constraint									79,300,000
Projected Revenue Deficiency					87,700,000																																																																									$ 15,200,000
Additional increase in revenue requirement						$ 79,800,000
2022 Formula Rate Plan | Maximum [Member] | Entergy Mississippi [Member]
Regulatory Assets [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Percentage													4.00%
2022 Formula Rate Plan | Subsequent Event [Member] | Entergy Arkansas [Member]
Regulatory Assets [Line Items]
Public Utilities, Requested Return on Equity, Percentage																																																																										7.40%
Projected Revenue Deficiency																																																																										$ 104,800,000
2022 Base Rate Case | Entergy Texas [Member]
Regulatory Assets [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount					$ 50,700,000				$ 131,400,000
Fuel Reconciliation | Entergy Texas [Member]
Regulatory Assets [Line Items]
Replacement power costs associated with generation outages																																																																																										$ 2,000,000
Costs associated with the operation of the Spindletop natural gas storage facility																																																																																										24,400,000
Non-specific disallowance of fuel and purchased power expenses																															$ 1,200,000
Eligible fuel and purchased power expenses, net of certain revenues credited to such expenses and other adjustments																																																																																									1,700,000,000	1,600,000,000
Cumulative under-recovery balance, including interest, for reconciliation period													$ 103,100,000																														25,800,000																																		103,100,000												103,100,000	25,800,000
Eligible fuel and purchased power expenses, net of certain revenues credited to such expenses and other adjustments																																																																																									1,700,000,000	1,600,000,000
Cumulative under-recovery balance, including interest, for reconciliation period													$ 103,100,000																														$ 25,800,000																																		$ 103,100,000												$ 103,100,000	$ 25,800,000
Interim Fuel Refund | Entergy Texas [Member]
Regulatory Assets [Line Items]
Interim fuel refund, including interest																																																																	$ 25,500,000
Interim Fuel Surcharge | Entergy Texas [Member]
Regulatory Assets [Line Items]
Interim fuel surcharge, including interest, for cumulative under-recovery of fuel and purchased power costs																																																																																						$ 51,700,000
Grand Gulf Sale-leaseback Renewal Complaint and Uncertain Tax Position Rate Base Issue [Member] | System Energy [Member]
Regulatory Assets [Line Items]
Reduction to accumulated deferred income tax asset				94,000,000																																																																		94,000,000						94,000,000
Reduction to accumulated deferred income tax regulatory liability				25,000,000																																																																		25,000,000						25,000,000
Income Tax Expense (Benefit)				13,000,000
Reduction to depreciation expense and related accumulated depreciation				33,000,000																																																																		33,000,000						33,000,000
Grand Gulf Sale-leaseback Renewal Complaint and Uncertain Tax Position Rate Base Issue [Member] | Subsequent Event [Member] | System Energy [Member]
Regulatory Assets [Line Items]
Calculation of additional refunds resulting form decommissioning tax position issue, presented in compliance report																																																																																												$ 493,000,000
Grand Gulf Sale-leaseback Renewal Complaint and Uncertain Tax Position Rate Base Issue [Member] | Unit Power Sales Agreement [Member] | System Energy [Member]
Regulatory Assets [Line Items]
Sale-leaseback regulatory liability reduction				$ 56,000,000																																																																		$ 56,000,000						$ 56,000,000