Rate And Regulatory Matters (Narrative) (Details) - USD ($)	1 Months Ended									3 Months Ended		9 Months Ended	10 Months Ended	12 Months Ended
	Jul. 31, 2022	Apr. 30, 2022	Mar. 31, 2022	Feb. 28, 2022	Jan. 31, 2022	Aug. 31, 2021	Apr. 30, 2021	Mar. 31, 2021	Dec. 31, 1988	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2022	Jun. 30, 2021	Mar. 31, 2023	Mar. 31, 2022	Jan. 01, 2022	Dec. 31, 2021	Sep. 30, 2021	Apr. 30, 2020
Impairment of Long-Lived Assets Held-for-use										$ 744,000	$ 3,278,000
Public Utilities, Property, Plant and Equipment, Construction Work in Progress			$ 1,556,651,000							1,556,651,000					$ 1,556,651,000		$ 1,511,966,000
Proceeds from the issuance of long-term debt										2,553,369,000	3,676,242,000
Regulatory Asset [Abstract]
Long-term Transition Bond, Noncurrent			54,674,000							54,674,000					54,674,000		83,639,000
Deferred Fuel Cost			375,670,000							375,670,000					375,670,000		324,394,000
Long-term Transition Bond, Noncurrent			54,674,000							54,674,000					54,674,000		83,639,000
Entergy Louisiana [Member]
Public Utilities, Property, Plant and Equipment, Construction Work in Progress			721,536,000							721,536,000					721,536,000		847,924,000
Proceeds from the issuance of long-term debt										1,506,637,000	1,399,245,000
Storm Reserve Escrow Account				$ 290,000,000			$ 290,000,000
Regulatory Asset [Abstract]
Aggregate principal amount of system restoration bonds authorization requested				3,186,000,000
Deferred Fuel Cost			44,876,000							44,876,000					44,876,000		45,374,000
Reclassification from utility plant to other regulatory assets			1,339,000,000							1,339,000,000					1,339,000,000
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
Deferred Storm and Property Reserve Deficiency, Noncurrent				1,000,000,000				$ 1,000,000,000			1,000,000,000							$ 1,000,000,000
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				2,100,000,000			$ 2,110,000,000
Entergy Louisiana [Member] | Subsequent Event [Member]
Total Restoration Costs For Repair and Replacement of Electrical System including carrying costs		$ 2,640,000,000
Regulatory Asset [Abstract]
Carrying costs associated with storm restoration costs												$ 3,000,000
Entergy Louisiana [Member] | Subsequent Event [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
Total Restoration Costs For Repair and Replacement of Electrical System including carrying costs		2,600,000,000
Entergy Louisiana [Member] | Subsequent Event [Member] | Hurricanes Laura, Delta, Zeta, and Winter Storm Uri
Total Restoration Costs For Repair and Replacement of Electrical System including carrying costs		$ 32,000,000
Entergy Mississippi [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount			69,000,000
Public Utilities, Property, Plant and Equipment, Construction Work in Progress			$ 120,538,000							120,538,000					120,538,000		95,452,000
Proceeds from the issuance of long-term debt										0	200,573,000
Public Utilities, Requested Return on Equity, Percentage			6.70%
Interim increase in formula rate plan revenues			$ 34,500,000
Interim increase in formula rate plan revenues due to adjustments			24,300,000
Regulatory Asset [Abstract]
Deferred Fuel Cost			145,954,000							145,954,000					145,954,000		121,878,000
Entergy Mississippi [Member] | Formula Rate Plan Historical Year Rate Adjustment Member
Regulatory Asset [Abstract]
Regulatory Assets, Noncurrent																	19,000,000
Entergy Mississippi [Member] | Deferred COVID 19 Costs
Regulatory Asset [Abstract]
Regulatory Assets			14,100,000							14,100,000					14,100,000
Entergy Mississippi [Member] | Maximum [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount			$ 48,600,000
Public Utilities, Requested Rate Increase (Decrease), Percentage			4.00%
Entergy Mississippi [Member] | Subsequent Event [Member] | Maximum [Member]
Public Utilities, Requested Rate Increase (Decrease), Percentage	2.00%	2.00%
Entergy New Orleans [Member]
Public Utilities, Property, Plant and Equipment, Construction Work in Progress			$ 23,047,000							23,047,000					23,047,000		22,199,000
Regulatory Asset [Abstract]
Long-term Transition Bond, Noncurrent			29,721,000							29,721,000					29,721,000		29,661,000
Deferred Fuel Cost			2,352,000							2,352,000					2,352,000		0
Long-term Transition Bond, Noncurrent			29,721,000							29,721,000					29,721,000		29,661,000
Entergy New Orleans [Member] | Deferred COVID 19 Costs
Regulatory Asset [Abstract]
Regulatory Assets			14,500,000							14,500,000					14,500,000
Entergy New Orleans [Member] | Subsequent Event [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount		$ 40,200,000
Regulatory Asset [Abstract]
Earned return on common equity		6.88%
Authorized return on common equity		9.35%
Entergy New Orleans [Member] | Subsequent Event [Member] | Electricity [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount		$ 32,300,000
Regulatory Asset [Abstract]
Additional revenue increase due to previously approved amounts		4,700,000
Entergy New Orleans [Member] | Subsequent Event [Member] | Natural Gas, US Regulated [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount		3,200,000
Entergy Texas [Member]
Public Utilities, Property, Plant and Equipment, Construction Work in Progress			207,167,000							207,167,000					207,167,000		183,965,000
Regulatory Asset [Abstract]
Long-term Transition Bond, Noncurrent			24,953,000							24,953,000					24,953,000		53,979,000
Deferred Fuel Cost			56,720,000							56,720,000					56,720,000		48,280,000
Long-term Transition Bond, Noncurrent			24,953,000							24,953,000					24,953,000		53,979,000
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] | Subsequent Event [Member] | Aggregate Senior secured restoration bonds (securitization bonds)
Regulatory Asset [Abstract]
Proceeds from Issuance of Debt		290,850,000
Entergy Texas [Member] | Subsequent Event [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			306,933,000							306,933,000					306,933,000		241,127,000
Proceeds from the issuance of long-term debt										212,060,000	604,760,000
Regulatory Asset [Abstract]
Energy Cost Recovery Rider Rate Per kWh															0.00959
Deferred Fuel Cost			125,767,000							125,767,000					125,767,000		108,862,000
Entergy Arkansas [Member] | Deferred COVID 19 Costs
Regulatory Asset [Abstract]
Regulatory Assets			34,400,000							34,400,000					34,400,000
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			149,025,000							149,025,000					149,025,000		$ 97,968,000
Proceeds from the issuance of long-term debt										$ 225,956,000	$ 189,244,000
Regulatory Asset [Abstract]
Earned return on common equity										10.94%
Recommended adjustment to earned return on equity								9.32%
Estimated return on equity complaint refund										$ 61,000,000
Return on equity complaint, estimated annual rate reduction			50,000,000							50,000,000					50,000,000
Provision for rate refund			38,000,000							$ 38,000,000					38,000,000
System Energy [Member] | Maximum [Member]
Regulatory Asset [Abstract]
ALJ recommended equity capital structure, percentage								48.15%
Grand Gulf [Member] | System Energy [Member]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage										11.50%
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				5,000,000	$ 88,300,000
Generation Cost Recovery Rider | Entergy Texas [Member] | Subsequent Event [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount												92,800,000
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			135,000,000							135,000,000					135,000,000
Refund related to depreciation expense adjustments			19,000,000							$ 19,000,000					$ 19,000,000
Unit Power Sales Agreement Complaint | System Energy [Member]
Regulatory Asset [Abstract]
FERC staff recommended refund			$ 84,100,000
New Orleans City Council Recommended Hypothetical Equity Ratio Prospectively																		48.15%
New Orleans City Council Witness Recommended Refund																		$ 98,800,000
System Energy Formula Rate Annual Protocols Formal Challenge | System Energy [Member]
Regulatory Asset [Abstract]
Estimated financial impact				$ 53,000,000