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Acquisitions, Held for Sale, and Dispositions (Disposal Groups, Including Discontinued Operations) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Jul. 01, 2025 | Dec. 31, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Assets, Current | $ 0 |  | $ 0 |  |  | $ 15,574
Disposal Group, Including Discontinued Operation, Assets, Noncurrent | 0 |  | 0 |  |  | 462,797
Entergy Louisiana [Member] |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Assets, Current | 0 |  | 0 |  |  | 2,474
Disposal Group, Including Discontinued Operation, Assets, Noncurrent | 0 |  | 0 |  |  | 173,669
Entergy New Orleans [Member] |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Assets, Current | 0 |  | 0 |  |  | 13,100
Disposal Group, Including Discontinued Operation, Assets, Noncurrent | 0 |  | 0 |  |  | 284,738
Disposal Group, Held-for-Sale, Not Discontinued Operations | Entergy New Orleans and Entergy Louisiana natural gas distribution businesses |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Disposal Group, Assets, Deferred Fuel Cost |  |  |  |  |  | 5,608
Disposal Group, Assets, Energy Related Inventory |  |  |  |  |  | 4,493
Disposal Group, Assets, Public Utilities, Inventory |  |  |  |  |  | 5,451
Disposal Group, Including Discontinued Operation, Prepaid and Other Assets, Current |  |  |  |  |  | 22
Disposal Group, Including Discontinued Operation, Assets, Current |  |  |  |  |  | 15,574
Disposal Group, Assets, Public Utilities, Property, Plant, and Equipment, Natural Gas |  |  |  |  |  | 679,502
Disposal Group, Assets, Public Utilities, Property, Plant, and Equipment, Construction Work In Progress |  |  |  |  |  | 2,959
Disposal Group, Assets, Public Utilities, Property, Plant, and Equipment, Accumulated Depreciation |  |  |  |  |  | (276,388)
Disposal Group, Assets, Regulatory Asset, Noncurrent |  |  |  |  |  | 35,381
Disposal Group, Including Discontinued Operation, Goodwill, Noncurrent |  |  |  |  | $ 7,000 | 6,474
Disposal Group, Assets, Defined Benefit Plan, Noncurrent |  |  |  |  |  | 14,663
Disposal Group, Assets, Other Assets, Noncurrent |  |  |  |  |  | 206
Disposal Group, Including Discontinued Operation, Assets, Noncurrent |  |  |  |  |  | 462,797
Disposal Group, Including Discontinued Operation, Accounts Payable, Current |  |  |  |  |  | 702
Disposal Group, Liabilities, Contract with Customer, Refund Liability, Current |  |  |  |  |  | 6,214
Disposal Group, Liabilities, Taxes Payable, Current |  |  |  |  |  | 13
Disposal Group, Including Discontinued Operation, Other Liabilities, Current |  |  |  |  |  | 1,401
Disposal Group, Including Discontinued Operation, Liabilities, Current |  |  |  |  |  | 8,330
Disposal Group, Liabilities, Regulatory Liability for Income Taxes - net |  |  |  |  |  | 31,575
Disposal Group, Liabilities, Regulatory Liability, Noncurrent |  |  |  |  |  | 1,611
Disposal Group, Liabilities, Defined Benefit Plan, Noncurrent |  |  |  |  |  | 3,976
Disposal Group, Including Discontinued Operation, Other Liabilities, Noncurrent |  |  |  |  |  | 3,844
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent |  |  |  |  |  | 41,006
Income (Loss) from Individually Significant Component Disposed of or Held-for-Sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax | 0 | $ 7,344 | 31,500 | $ 34,803 |  |
Disposal Group, Held-for-Sale, Not Discontinued Operations | Entergy Louisiana natural gas distribution business | Entergy Louisiana [Member] |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Disposal Group, Assets, Deferred Fuel Cost |  |  |  |  |  | 727
Disposal Group, Assets, Energy Related Inventory |  |  |  |  |  | 702
Disposal Group, Assets, Public Utilities, Inventory |  |  |  |  |  | 1,045
Disposal Group, Including Discontinued Operation, Prepaid and Other Assets, Current |  |  |  |  |  | 0
Disposal Group, Including Discontinued Operation, Assets, Current |  |  |  |  |  | 2,474
Disposal Group, Assets, Public Utilities, Property, Plant, and Equipment, Natural Gas |  |  |  |  |  | 303,193
Disposal Group, Assets, Public Utilities, Property, Plant, and Equipment, Construction Work In Progress |  |  |  |  |  | 1,085
Disposal Group, Assets, Public Utilities, Property, Plant, and Equipment, Accumulated Depreciation |  |  |  |  |  | (139,556)
Disposal Group, Assets, Regulatory Asset, Noncurrent |  |  |  |  |  | 8,947
Disposal Group, Including Discontinued Operation, Goodwill, Noncurrent |  |  |  |  |  | 0
Disposal Group, Assets, Defined Benefit Plan, Noncurrent |  |  |  |  |  | 0
Disposal Group, Assets, Other Assets, Noncurrent |  |  |  |  |  | 0
Disposal Group, Including Discontinued Operation, Assets, Noncurrent |  |  |  |  |  | 173,669
Disposal Group, Including Discontinued Operation, Accounts Payable, Current |  |  |  |  |  | 702
Disposal Group, Liabilities, Contract with Customer, Refund Liability, Current |  |  |  |  |  | 1,984
Disposal Group, Liabilities, Taxes Payable, Current |  |  |  |  |  | 13
Disposal Group, Including Discontinued Operation, Other Liabilities, Current |  |  |  |  |  | 589
Disposal Group, Including Discontinued Operation, Liabilities, Current |  |  |  |  |  | 3,288
Disposal Group, Liabilities, Regulatory Liability for Income Taxes - net |  |  |  |  |  | 4,981
Disposal Group, Liabilities, Regulatory Liability, Noncurrent |  |  |  |  |  | 1,214
Disposal Group, Liabilities, Defined Benefit Plan, Noncurrent |  |  |  |  |  | 4,525
Disposal Group, Including Discontinued Operation, Other Liabilities, Noncurrent |  |  |  |  |  | 1,194
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent |  |  |  |  |  | 11,914
Income (Loss) from Individually Significant Component Disposed of or Held-for-Sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax | 0 | 3,110 | 12,047 | 15,968 |  |
Disposal Group, Held-for-Sale, Not Discontinued Operations | Entergy New Orleans natural gas distribution business | Entergy New Orleans [Member] |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Disposal Group, Assets, Deferred Fuel Cost |  |  |  |  |  | 4,881
Disposal Group, Assets, Energy Related Inventory |  |  |  |  |  | 3,791
Disposal Group, Assets, Public Utilities, Inventory |  |  |  |  |  | 4,406
Disposal Group, Including Discontinued Operation, Prepaid and Other Assets, Current |  |  |  |  |  | 22
Disposal Group, Including Discontinued Operation, Assets, Current |  |  |  |  |  | 13,100
Disposal Group, Assets, Public Utilities, Property, Plant, and Equipment, Natural Gas |  |  |  |  |  | 376,309
Disposal Group, Assets, Public Utilities, Property, Plant, and Equipment, Construction Work In Progress |  |  |  |  |  | 1,874
Disposal Group, Assets, Public Utilities, Property, Plant, and Equipment, Accumulated Depreciation |  |  |  |  |  | (136,832)
Disposal Group, Assets, Regulatory Asset, Noncurrent |  |  |  |  |  | 23,682
Disposal Group, Including Discontinued Operation, Goodwill, Noncurrent |  |  |  |  |  | 0
Disposal Group, Assets, Defined Benefit Plan, Noncurrent |  |  |  |  |  | 19,499
Disposal Group, Assets, Other Assets, Noncurrent |  |  |  |  |  | 206
Disposal Group, Including Discontinued Operation, Assets, Noncurrent |  |  |  |  |  | 284,738
Disposal Group, Including Discontinued Operation, Accounts Payable, Current |  |  |  |  |  | 0
Disposal Group, Liabilities, Contract with Customer, Refund Liability, Current |  |  |  |  |  | 4,230
Disposal Group, Liabilities, Taxes Payable, Current |  |  |  |  |  | 0
Disposal Group, Including Discontinued Operation, Other Liabilities, Current |  |  |  |  |  | 812
Disposal Group, Including Discontinued Operation, Liabilities, Current |  |  |  |  |  | 5,042
Disposal Group, Liabilities, Regulatory Liability for Income Taxes - net |  |  |  |  |  | 26,594
Disposal Group, Liabilities, Regulatory Liability, Noncurrent |  |  |  |  | $ 4,000 | 397
Disposal Group, Liabilities, Defined Benefit Plan, Noncurrent |  |  |  |  |  | 1,197
Disposal Group, Including Discontinued Operation, Other Liabilities, Noncurrent |  |  |  |  |  | 2,650
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent |  |  |  |  |  | $ 30,838
Income (Loss) from Individually Significant Component Disposed of or Held-for-Sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax | $ 0 | $ 4,234 | $ 19,453 | $ 18,835 |  |

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