Rate And Regulatory Matters (Narrative) (Details)	1 Months Ended																	3 Months Ended	5 Months Ended	6 Months Ended	9 Months Ended			10 Months Ended	11 Months Ended	12 Months Ended				20 Months Ended	36 Months Ended
	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 ($)	Oct. 31, 2021 USD ($)	Aug. 31, 2021 USD ($)	May 31, 2021 USD ($)	Apr. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 1988	Jun. 30, 2022 USD ($)	Aug. 31, 2021 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Jul. 31, 2021 USD ($)	Dec. 31, 2023 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)	Mar. 31, 2022 USD ($)	Jan. 01, 2022 USD ($)	Apr. 30, 2020 USD ($)
Impairment of Long-Lived Assets Held-for-use																						$ (163,464,000)	$ 345,200,000
Public Utilities, Property, Plant and Equipment, Construction Work in Progress			$ 1,878,427,000																	$ 1,878,427,000		1,878,427,000							$ 1,511,966,000	$ 1,511,966,000
Proceeds from the issuance of long-term debt																						5,316,693,000	6,269,152,000
Regulatory Asset [Abstract]
Long-term Transition Bond, Noncurrent			311,156,000																	311,156,000		311,156,000							83,639,000	83,639,000
Deferred Fuel Cost			1,138,041,000																	1,138,041,000		1,138,041,000							324,394,000	324,394,000
Replacement Reserve Escrow			332,000,000																	332,000,000		332,000,000							49,000,000	49,000,000
Reduction of income tax expense							$ 283,000,000
Long-term Transition Bond, Noncurrent			311,156,000																	311,156,000		311,156,000							83,639,000	83,639,000
4.00% Series mortgage bonds due July 2022
Debt instrument, interest rate, stated percentage						4.00%	4.00%											4.00%
Regulatory Asset [Abstract]
Repayments of First Mortgage Bond							$ 650,000,000
Entergy Louisiana [Member]
Public Utilities, Property, Plant and Equipment, Construction Work in Progress			785,673,000																	785,673,000		785,673,000							847,924,000	847,924,000
Proceeds from the issuance of long-term debt																						2,673,246,000	2,404,102,000
Total Restoration Costs For Repair and Replacement of Electrical System including carrying costs								$ 2,640,000,000
Storm Reserve Escrow Account			291,203,000							$ 290,000,000					$ 290,000,000					291,203,000		291,203,000							0	0
Regulatory Asset [Abstract]
Aggregate principal amount of system restoration bonds authorization requested										3,186,000,000
Earned return on common equity							8.33%
Deferred Fuel Cost			317,633,000																	317,633,000		317,633,000							45,374,000	45,374,000
Reclassification from utility plant to other regulatory assets									$ 1,942,000,000																			$ 1,942,000,000			$ 1,942,000,000
Replacement Reserve Escrow			291,200,000																	291,200,000		$ 291,200,000
Fuel Costs																				225,000,000
Rate Increase Included in Formula Rate Plan							$ 65,300,000
Formula rate plan revenue increase							152,900,000
LCDA issuance of bonds under Act 293 financing							$ 3,194,000,000
LURC's percentage of annual dividends							1.00%															1.00%
ELL's percentage of annual dividends							99.00%															99.00%
Proceeds from Contributed Capital							$ 1,000,000,000															$ 1,000,000,000	0
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
Regulatory charge recorded as a result of reduction in income tax expense, net of tax							165,000,000
LURC's beneficial interest in the storm trust																		$ 31,600,000
Entergy Louisiana [Member] | Unsecured Term Loan due June 2023
Regulatory Asset [Abstract]
Repayments of Unsecured Debt							$ 1,200,000,000
Entergy Louisiana [Member] | Mortgage Bonds Zero Point Six Two Percent Series Due November 2023
Debt instrument, interest rate, stated percentage				0.62%			0.62%
Regulatory Asset [Abstract]
Repayments of First Mortgage Bond				$ 665,000,000			$ 435,000,000
Entergy Louisiana [Member] | Deferred COVID 19 Costs
Regulatory Asset [Abstract]
Regulatory Assets			47,800,000																	47,800,000		47,800,000
Entergy Louisiana [Member] | Hurricane Ida
Total Restoration Costs For Repair and Replacement of Electrical System								2,540,000,000
Non-capital storm costs								586,000,000
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
Total Restoration Costs For Repair and Replacement of Electrical System including carrying costs								2,600,000,000
Regulatory Asset [Abstract]
Aggregate principal amount of system restoration bonds authorization requested																							1,000,000,000
Entergy Louisiana [Member] | Hurricanes Laura, Delta, Zeta, and Winter Storm Uri
Total Restoration Costs For Repair and Replacement of Electrical System															2,060,000,000.00
Non-capital storm costs															380,000,000
Deferred Storm and Property Reserve Deficiency, Noncurrent										51,000,000					1,680,000,000
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] | Winter Storm Uri
Regulatory Asset [Abstract]
Fuel Costs																			$ 166,000,000
Entergy Louisiana [Member] | Subsequent Event [Member] | Hurricanes Laura, Delta, Zeta, and Winter Storm Uri
Regulatory Asset [Abstract]
Carrying costs associated with storm restoration costs																					$ 3,000,000
Entergy Louisiana [Member] | Subsequent Event [Member] | Hurricane Ida
Regulatory Asset [Abstract]
Carrying costs associated with storm restoration costs		$ 59,100,000																			57,000,000
Entergy Louisiana [Member] | Subsequent Event [Member] | Hurricane Ida
Total Restoration Costs For Repair and Replacement of Electrical System		2,640,000,000
Entergy Mississippi [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount									$ 69,000,000
Public Utilities, Property, Plant and Equipment, Construction Work in Progress			175,629,000																	175,629,000		175,629,000							95,452,000	95,452,000
Proceeds from the issuance of long-term debt																						249,298,000	200,539,000
Public Utilities, Requested Return on Equity, Percentage									6.70%
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
Regulatory Asset [Abstract]
Earned return on common equity						5.99%
Deferred Fuel Cost			336,337,000																	336,337,000		336,337,000							121,878,000	121,878,000
Replacement Reserve Escrow			41,100,000																	41,100,000		41,100,000							48,900,000	48,900,000
Interim fuel refund for cumulative over-recovery					$ 14,100,000
MPSC settlement refund						$ 235,000,000
Potential settlement refund						$ 353,000,000
Deferred Fuel Balance - ECR Rider					291,700,000
Power Management Rider Over-Recovery					51,100,000
Regulatory credits to reflect the effects of the joint stipulation					22,600,000
Entergy Mississippi [Member] | Formula Rate Plan Historical Year Rate Adjustment Member
Regulatory Asset [Abstract]
Regulatory Assets, Noncurrent																													19,000,000	19,000,000
Entergy Mississippi [Member] | Deferred COVID 19 Costs
Regulatory Asset [Abstract]
Regulatory Assets			10,900,000																	10,900,000		10,900,000
Entergy Mississippi [Member] | Grand Gulf [Member]
Regulatory Asset [Abstract]
Long-term Contract for Purchase of Electric Power, Share of Plant Output Being Purchased						40.00%
Entergy Mississippi [Member] | Maximum [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount									$ 48,600,000
Public Utilities, Requested Rate Increase (Decrease), Percentage								2.00%	4.00%
Entergy Mississippi [Member] | Subsequent Event [Member]
Regulatory Asset [Abstract]
Projected Deferred Fuel Balance																					200,000,000
Entergy New Orleans [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount								$ 42,100,000
Public Utilities, Property, Plant and Equipment, Construction Work in Progress			45,338,000																	45,338,000		45,338,000							22,199,000	22,199,000
Proceeds from the issuance of long-term debt																							19,251,000
Regulatory Asset [Abstract]
Long-term Transition Bond, Noncurrent			23,927,000																	23,927,000		23,927,000							29,661,000	29,661,000
Earned return on common equity								6.88%
Authorized return on common equity								9.35%
Deferred Fuel Cost			25,694,000																	25,694,000		25,694,000							0	0
Public Utilities, Approved Rate Increase (Decrease), Amount			24,700,000
Regulatory credits funded by certain regulatory liabilities			13,900,000
Long-term Transition Bond, Noncurrent			23,927,000																	23,927,000		23,927,000							29,661,000	29,661,000
Entergy New Orleans [Member] | Deferred COVID 19 Costs
Regulatory Asset [Abstract]
Regulatory Assets			13,900,000																	13,900,000		13,900,000
Entergy New Orleans [Member] | Hurricane Ida
Regulatory Asset [Abstract]
Estimated costs included in filing for total restoration costs for repair and replacement of electrical system						$ 11,000,000
Entergy New Orleans [Member] | Hurricane Zeta
Total Restoration Costs For Repair and Replacement of Electrical System														$ 36,000,000
Regulatory Asset [Abstract]
Excess withdrawn replacement reserve escrow							7,000,000
Withdrawal from storm reserves							44,000,000									$ 44,000,000
Prudently incurred storm restoration costs			33,000,000				$ 33,000,000
Estimated costs included in filing for total restoration costs for repair and replacement of electrical system														$ 7,000,000
Entergy New Orleans [Member] | Hurricane Ida
Total Restoration Costs For Repair and Replacement of Electrical System						170,000,000
Regulatory Asset [Abstract]
Replacement Reserve Escrow																							39,000,000
Excess withdrawn replacement reserve escrow																							7,000,000
Reduction to requested total restoration costs for repair and replacement of electrical system						46,000,000
Replenishment amount for storm reserve spending										150,000,000
Initial funding for storm reserve spending			75,000,000	$ 75,000,000
Storm restoration costs approved for securitization			206,000,000
Storm restoration costs approved for securitization allocated to Hurricane Ida			125,000,000
Outages from storm													100.00%
Entergy New Orleans [Member] | Electricity [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount								$ 34,100,000
Regulatory Asset [Abstract]
Additional revenue increase due to previously approved amounts			4,700,000					4,700,000
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount					$ 17,100,000
Public Utilities, Approved Rate Increase (Decrease), Amount			18,200,000
Entergy New Orleans [Member] | Natural Gas, US Regulated [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount								3,300,000
Regulatory Asset [Abstract]
Public Utilities, Approved Rate Increase (Decrease), Amount			1,800,000
Entergy New Orleans [Member] | Subsequent Event [Member] | Hurricane Ida
Regulatory Asset [Abstract]
Carrying costs associated with storm restoration costs																					$ 9,000,000
Entergy Texas [Member]
Public Utilities, Property, Plant and Equipment, Construction Work in Progress			285,907,000																	285,907,000		285,907,000							183,965,000	183,965,000
Proceeds from the issuance of long-term debt																						606,444,000	127,931,000
Regulatory Asset [Abstract]
Long-term Transition Bond, Noncurrent			287,229,000																	287,229,000		287,229,000							53,979,000	53,979,000
Deferred Fuel Cost			321,924,000																	321,924,000		321,924,000							48,280,000	48,280,000
Interim fuel surcharge, including interest, for under-recovery of fuel and purchased power costs																														51,700,000
Eligible fuel and purchased power expenses, net of certain revenues credited to such expenses and other adjustments																															1,700,000,000
Cumulative under-recovery balance, including interest, for reconciliation period									$ 103,100,000																			103,100,000			103,100,000
Long-term Transition Bond, Noncurrent			287,229,000																	287,229,000		287,229,000							53,979,000	53,979,000
Interim fuel surcharge, including interest, for under-recovery of fuel and purchased power costs																														51,700,000
Eligible fuel and purchased power expenses, net of certain revenues credited to such expenses and other adjustments																															1,700,000,000
Cumulative under-recovery balance, including interest, for reconciliation period									103,100,000																			103,100,000			103,100,000
Entergy Texas [Member] | Aggregate Senior secured restoration bonds (securitization bonds)
Regulatory Asset [Abstract]
Proceeds from Issuance of Debt								290,850,000
Entergy Texas [Member] | Deferred COVID 19 Costs
Regulatory Asset [Abstract]
Regulatory Assets			10,400,000																	10,400,000		10,400,000
Entergy Texas [Member] | Hurricanes Laura and Delta and Winter Storm Uri
Regulatory Asset [Abstract]
Aggregate principal amount of system restoration bonds authorization requested																																$ 242,900,000
Reclassification from utility plant to other regulatory assets									153,000,000																			153,000,000			153,000,000
Entergy Texas [Member] | Hurricanes Laura and Delta and Winter Storm Uri | Aggregate Senior secured restoration bonds (securitization bonds)
Regulatory Asset [Abstract]
Proceeds from Issuance of Debt								290,850,000
Entergy Arkansas [Member]
Public Utilities, Property, Plant and Equipment, Construction Work in Progress			458,037,000																	458,037,000		458,037,000							241,127,000	241,127,000
Proceeds from the issuance of long-term debt																						225,625,000	708,126,000
Regulatory Asset [Abstract]
Energy Cost Recovery Rider Rate Per kWh																												0.00959
Deferred Fuel Cost			136,454,000																	136,454,000		136,454,000							108,862,000	108,862,000
Annual revenue constraint per rate class percentage					400.00%
Entergy Arkansas [Member] | Deferred COVID 19 Costs
Regulatory Asset [Abstract]
Regulatory Assets			39,000,000																	39,000,000		39,000,000
Entergy Arkansas [Member] | 2021 February Winter Storms
Regulatory Asset [Abstract]
Deferred Fuel Cost									32,000,000																			$ 32,000,000			$ 32,000,000
Entergy Arkansas [Member] | Subsequent Event [Member]
Regulatory Asset [Abstract]
Energy Cost Recovery Rider Rate Per kWh																											$ 0.016390
Requested Energy Cost Recovery Rider Rate Per kWh																											$ 0.01785
System Energy [Member]
Public Utilities, Property, Plant and Equipment, Construction Work in Progress			94,303,000																	94,303,000		94,303,000							97,968,000	$ 97,968,000
Proceeds from the issuance of long-term debt																						$ 955,587,000	$ 565,610,000
Regulatory Asset [Abstract]
Earned return on common equity																						10.94%
Authorized return on common equity					9.65%
Recommended adjustment to earned return on equity																9.32%
Estimated return on equity complaint refund																						$ 62,000,000
Return on equity complaint, estimated annual rate reduction			34,000,000																	34,000,000		$ 34,000,000
Public Utilities, Approved Equity Capital Structure, Percentage					52.00%
Potential settlement refund						588,250,000
Regulatory charge related to System Energy settlement						551,000,000
Regulatory charge related to System Energy settlement - net of tax						413,000,000
Previously recorded liability related to applicable litigation						37,000,000
Regulatory Liability related to potential settlement refund						588,000,000												$ 588,000,000
System Energy [Member] | Maximum [Member]
Regulatory Asset [Abstract]
ALJ recommended equity capital structure, percentage																48.15%
Entergy Finance Company, LLC
Regulatory Asset [Abstract]
Class preferred non voting membership interest units acquired in wholly owned subsidiary | shares							31,635,718.7221
Preferred Stock, Dividend Rate, Percentage							7.00%
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
Preferred Stock, Liquidation Preference, Value							$ 100
Entergy Holdings Company, LLC | Hurricane Katrina and Hurricane Rita
Regulatory Asset [Abstract]
Class preferred non voting membership interest units acquired in wholly owned subsidiary | shares							6,843,780.24
Entergy Holdings Company, LLC | Hurricane Gustav and Hurricane Ike
Regulatory Asset [Abstract]
Class preferred non voting membership interest units acquired in wholly owned subsidiary | shares							4,126,940.15
Entergy Holdings Company, LLC | Hurricane Isaac
Regulatory Asset [Abstract]
Class preferred non voting membership interest units acquired in wholly owned subsidiary | shares							2,935,152.69
Grand Gulf [Member] | System Energy [Member]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage																						11.50%
Legacy Entergy Louisiana [Member] | Entergy Louisiana [Member]
Regulatory Asset [Abstract]
Formula rate plan revenue increase							$ 86,000,000
Legacy Entergy Gulf States Louisiana [Member] | Entergy Louisiana [Member]
Regulatory Asset [Abstract]
Formula rate plan revenue increase							66,900,000
Distribution Cost Recovery Factor Rider [Member] | Entergy Texas [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount													$ 40,200,000
Revenue increase resulting from incremental revenue																								$ 13,900,000
Generation Cost Recovery Rider | Entergy Texas [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount			5,700,000					92,800,000		5,000,000	$ 88,300,000
Revenue increase resulting from incremental revenue								4,500,000
Grand Gulf Sale-leaseback Renewal Complaint | System Energy [Member]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage																	11.50%
Regulatory Asset [Abstract]
Refund of Lease Payments																																	$ 17,200,000
Remaining net book value of the leased assets																																	$ 70,000,000
Rate reduction for ADIT associated with uncertain tax positions resulting from Grand Gulf sale-leaseback			422,000,000																	422,000,000		$ 422,000,000
Interest Portion of rate reduction for ADIT associated with uncertain tax positions resulting from Grand Gulf sale-leaseback			144,000,000																	144,000,000		144,000,000
Refund related to depreciation expense adjustments			$ 20,000,000																	$ 20,000,000		$ 20,000,000
Unit Power Sales Agreement Complaint | System Energy [Member]
Regulatory Asset [Abstract]
FERC staff recommended refund								$ 106,600,000	$ 84,100,000
New Orleans City Council Recommended Hypothetical Equity Ratio Prospectively			48.15%																	48.15%		48.15%
New Orleans City Council Witness Recommended Refund			$ 98,800,000																	$ 98,800,000		$ 98,800,000
New Orleans City Council proposed refunds related to the money pool							51,700,000
LPSC estimated refund without interest							286,000,000
Reduction in the revenue requirement							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
Amount of refunds ordered in a given year							$ 50,000,000
System Energy Formula Rate Annual Protocols Formal Challenge | Entergy Mississippi [Member]
Regulatory Asset [Abstract]
Amount of refunds ordered in a given year					$ 80
Amount of retail customers receiving bill credit			460,000																	460,000		460,000
Payments for Legal Settlements						$ 235,000,000
System Energy Formula Rate Annual Protocols Formal Challenge | System Energy [Member]
Regulatory Asset [Abstract]
Estimated financial impact										$ 53,000,000
Transmission Cost Recovery Factor Rider [Member] | Entergy Texas [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount												$ 66,100,000
Revenue increase resulting from incremental revenue																									$ 15,100,000
2022 Base Rate Case | Entergy Texas [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount					131,400,000
2022 Base Rate Case | Entergy Texas [Member] | Subsequent Event [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount	$ 50,700,000
2022 Formula Rate Plan | Entergy Arkansas [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount					119,900,000																								$ 15,200,000
Regulatory Asset [Abstract]
Earned return on common equity																													8.38%
Reduced proposed increase in revenue requirement to comply with annual revenue constraint					79,300,000
Projected Revenue Deficiency					$ 104,800,000
2022 Formula Rate Plan | Entergy Arkansas [Member] | Subsequent Event [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount	$ 102,800,000																									$ 87,700,000
Public Utilities, Requested Return on Equity, Percentage																										7.40%
Regulatory Asset [Abstract]
Additional increase in revenue requirement		$ 79,800,000