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Rate And Regulatory Matters (Narrative - All Other) (Details) | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended
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Aug. 31, 2024 USD ($) | Jul. 31, 2024 USD ($) | Jun. 30, 2024 USD ($) kWh | Apr. 30, 2024 USD ($) | Mar. 31, 2024 USD ($) | Feb. 29, 2024 USD ($) | Dec. 31, 2023 USD ($) | Jul. 31, 2020 USD ($) | Dec. 31, 2018 USD ($) | Jun. 30, 2024 USD ($) | Mar. 31, 2024 USD ($) | Jun. 30, 2023 USD ($) | Dec. 31, 2024 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Dec. 31, 2025 USD ($) | Mar. 31, 2025 USD ($) | Mar. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Regulatory Liability, Noncurrent |  |  | $ 3,488,314,000 |  |  |  | $ 3,116,926,000 |  |  | $ 3,488,314,000 |  |  |  | $ 3,488,314,000 |  |  |  |  | $ 3,116,926,000
Regulatory Asset, Noncurrent |  |  | 5,408,682,000 |  |  |  | 5,669,404,000 |  |  | 5,408,682,000 |  |  |  | 5,408,682,000 |  |  |  |  | 5,669,404,000
Asset Impairment Charges |  |  |  |  |  |  |  |  |  | 0 |  | $ 0 |  | 131,775,000 | $ 0 |  |  |  |
Entergy Arkansas [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Liability, Noncurrent |  |  | 803,680,000 |  |  |  | 759,181,000 |  |  | 803,680,000 |  |  |  | 803,680,000 |  |  |  |  | 759,181,000
Regulatory Asset, Noncurrent |  |  | 1,705,642,000 |  |  |  | 1,885,361,000 |  |  | 1,705,642,000 |  |  |  | 1,705,642,000 |  |  |  |  | 1,885,361,000
Payments for Legal Settlements |  |  |  |  |  |  |  |  | $ 135,000,000 |  |  |  |  |  |  |  |  |  |
Refund to customers, plus interest, associated with recalculated bandwidth remedy |  |  |  |  |  |  |  | $ 13,700,000 |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Charges |  |  |  |  |  |  |  |  |  | 0 |  | $ 0 |  | 131,775,000 | $ 0 |  |  |  |
Entergy Arkansas [Member] | Opportunity Sales [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Asset, Noncurrent |  |  |  |  |  |  | 131,800,000 |  |  |  |  |  |  |  |  |  |  |  | 131,800,000
Asset Impairment Charges |  |  |  |  |  |  |  |  |  |  | $ 131,800,000 |  |  |  |  |  |  |  |
Asset Impairment Charges, net of tax |  |  |  |  |  |  |  |  |  |  | 99,100,000 |  |  |  |  |  |  |  |
Entergy Louisiana [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Liability, Noncurrent |  |  | 1,692,861,000 |  |  |  | 1,407,689,000 |  |  | 1,692,861,000 |  |  |  | 1,692,861,000 |  |  |  |  | 1,407,689,000
Regulatory Asset, Noncurrent |  |  | 1,657,857,000 |  |  |  | 1,648,852,000 |  |  | 1,657,857,000 |  |  |  | 1,657,857,000 |  |  |  |  | 1,648,852,000
Entergy Mississippi [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount |  |  |  |  | $ 5,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Liability, Noncurrent |  |  | 35,912,000 |  |  |  | 33,696,000 |  |  | 35,912,000 |  |  |  | 35,912,000 |  |  |  |  | 33,696,000
Regulatory Asset, Noncurrent |  |  | 573,751,000 |  |  |  | 579,076,000 |  |  | 573,751,000 |  |  |  | 573,751,000 |  |  |  |  | 579,076,000
Monthly storm damage provision |  |  |  |  |  | $ 1,750,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Storm Damage Provision Balance |  |  |  |  | 70,000,000 | 15,000,000 | 15,000,000 |  |  |  | 70,000,000 |  |  |  |  |  |  | $ 70,000,000 | 15,000,000
Storm damage provision balance at which collections will resume |  |  |  |  | 60,000,000 | 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Disbursement from storm reserve rescrow |  |  |  |  |  |  | 34,500,000 |  |  |  |  |  |  |  |  |  |  |  |
Entergy New Orleans [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Liability, Noncurrent |  |  | 259,613,000 |  |  |  | 90,434,000 |  |  | 259,613,000 |  |  |  | 259,613,000 |  |  |  |  | 90,434,000
Regulatory Asset, Noncurrent |  |  | 171,294,000 |  |  |  | 182,367,000 |  |  | 171,294,000 |  |  |  | 171,294,000 |  |  |  |  | 182,367,000
Entergy New Orleans [Member] | Credits expected to be shared with customers from resolution of the 2016-2018 IRS audit [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Liability, Noncurrent |  |  |  | $ 138,000,000 | 138,000,000 |  | 60,000,000 |  |  |  | 138,000,000 |  |  |  |  |  |  | 138,000,000 | 60,000,000
Entergy Texas [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Liability, Noncurrent |  |  | 27,938,000 |  |  |  | 43,013,000 |  |  | 27,938,000 |  |  |  | 27,938,000 |  |  |  |  | 43,013,000
Regulatory Asset, Noncurrent |  |  | $ 556,409,000 |  |  |  | 596,606,000 |  |  | 556,409,000 |  |  |  | 556,409,000 |  |  |  |  | $ 596,606,000
Energy Cost Recovery Rider [Member] | Entergy Arkansas [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Energy Cost Recovery Rider Rate Per kWh |  |  |  | 0.00882 |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.01883 |
Credit for recovery attributed to net metering costs |  |  |  |  |  |  |  |  |  |  | 9,000,000 |  |  |  |  |  |  |  |
Adjustment to over-recovery balance |  |  |  |  | $ 43,700,000 |  |  |  |  |  | $ 43,700,000 |  |  |  |  |  |  | $ 43,700,000 |
Energy Cost Recovery Rider [Member] | Entergy Arkansas [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Requested Energy Cost Recovery Rider Rate Per kWh |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.00882 |  |
2024 Formula Rate Plan Filing [Member] | Entergy Arkansas [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Return on Equity, Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7.48%
Projected Revenue Deficiency |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 33,100,000
2024 Formula Rate Plan Filing [Member] | Entergy Arkansas [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Return on Equity, Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8.43% |  |  |
Projected Revenue Deficiency |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 69,500,000 |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount |  | $ 102,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual revenue constraint per rate class percentage |  | 4.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2024 Formula Rate Plan Filing [Member] | Entergy Arkansas [Member] | Subsequent Event [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount |  | $ 82,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2024 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Return on Equity, Percentage |  |  |  |  | 7.10% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount |  |  |  |  | $ 63,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Interim Rate Increase (Decrease), Amount |  |  |  | $ 32,600,000 | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual depreciation expense increase |  |  |  |  |  | $ 55,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Earned return on rate base |  |  | 6.08% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6.81%
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  | $ 64,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 300,000
Regulatory Asset, Noncurrent |  |  | 7,300,000 |  |  |  |  |  |  | 7,300,000 |  |  |  | $ 7,300,000 |  |  |  |  |
2024 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member] | Residential [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer charge |  |  | $ 31.82 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average customer usage | kWh |  |  | 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2024 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member] | General service |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer charge |  |  | $ 53.10 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2024 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cap on retail revenues in look-back filing |  |  |  | 0.02 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2024 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Interim Rate Increase (Decrease), Amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 8,700,000 |  |  |  |  |  |
2024 Formula Rate Plan Filing [Member] | Entergy New Orleans [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount |  |  |  | $ 12,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Approved Return on Equity, Percentage |  |  |  | 9.35% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2024 Formula Rate Plan Filing [Member] | Entergy New Orleans [Member] | Electricity [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount |  |  |  | $ 7,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earned return on equity |  |  |  | 8.66% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2024 Formula Rate Plan Filing [Member] | Entergy New Orleans [Member] | Natural Gas, US Regulated [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount |  |  |  | $ 5,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earned return on equity |  |  |  | 5.87% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2024 Formula Rate Plan Filing [Member] | Entergy New Orleans [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Requested reduction to formula rate plan revenues resulting from alleged errors |  | $ 1,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grand Gulf Credit Rider [Member] | Entergy Arkansas [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Refund to retail customers | $ 100,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request | Entergy Louisiana [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expenses reflecting effects of agreement in principle |  |  |  |  |  |  |  |  |  | 151,000,000 |  |  |  |  |  |  |  |  |
Expenses reflecting effects of agreement in principle, net of tax |  |  |  |  |  |  |  |  |  | $ 111,000,000 |  |  |  |  |  |  |  |  |
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request | Entergy Louisiana [Member] | Credits expected to be shared with customers from resolution of the 2016-2018 IRS audit [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Liability, Noncurrent |  |  |  |  |  |  | $ 38,000,000 |  |  |  |  |  |  |  |  |  |  |  | $ 38,000,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request | Entergy Louisiana [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Return on Equity, Percentage | 9.70% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount | $ 120,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer rate credits | $ 184,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Approved Return on Equity, Percentage | 9.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis points bandwidth above and below midpoint return on common equity | 40 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in nuclear depreciation rates | $ 15,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request | Entergy Louisiana [Member] | Subsequent Event [Member] | System Energy Settlement with the LPSC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer rate credits | 75,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request | Entergy Louisiana [Member] | Subsequent Event [Member] | Formula Rate Plan Global Settlement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer rate credits | 5,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request | Entergy Louisiana [Member] | Subsequent Event [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount | 140,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request | Entergy Louisiana [Member] | Subsequent Event [Member] | Maximum [Member] | 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount | 350,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request | Entergy Louisiana [Member] | Subsequent Event [Member] | Maximum [Member] | 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount | 375,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request | Entergy Louisiana [Member] | Subsequent Event [Member] | Maximum [Member] | 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount | $ 400,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distribution Cost Recovery Factor Rider [Member] | Entergy Texas [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount |  |  | $ 40,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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