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v3.25.3

Retirement And Other Postretirement Benefits (Narrative) (Details) - Pension Plan [Member] - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2025
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  | $ 147,600,000 |  |
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year | $ 240,000,000 |  | 240,000,000 |  |
Nonqualified Plan |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 6,100,000 | $ 2,700,000 | 11,100,000 | $ 8,200,000 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | 3,600,000 | 0 | 3,600,000 | 0 |
Qualified Plan |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 37,396,000 | 17,754,000 | 80,048,000 | 370,828,000 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | (23,874,000) | 0 | (23,874,000) | (325,253,000) |
Qualified Plan | Sale of gas distribution business - ongoing payment of lump sum benefits |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |  |  | (12,100,000) |  |
Qualified Plan | Sale of the gas business settlement charges |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |  |  | (11,800,000) |  |
Entergy Arkansas [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  | 23,160,000 |  |
Entergy Arkansas [Member] | Nonqualified Plan |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 46,000 | 68,000 | 140,000 | 204,000 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |  | 0 |  | 0 |
Entergy Arkansas [Member] | Qualified Plan |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 5,799,000 | 4,908,000 | 16,511,000 | 14,723,000 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | (1,454,000) |  | (1,454,000) | 0 |
Entergy Louisiana [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  | 25,383,000 |  |
Entergy Louisiana [Member] | Nonqualified Plan |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 35,000 | 51,000 | 107,000 | 153,000 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |  | 0 |  | 0 |
Entergy Louisiana [Member] | Qualified Plan |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 6,646,000 | 2,667,000 | 13,704,000 | 8,001,000 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | (5,982,000) |  | (5,982,000) | 0 |
Entergy Mississippi [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  | 5,322,000 |  |
Entergy Mississippi [Member] | Nonqualified Plan |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 301,000 | 83,000 | 481,000 | 249,000 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | 215,000 | 0 | 215,000 | 0 |
Entergy Mississippi [Member] | Qualified Plan |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 814,000 | 834,000 | 2,566,000 | 2,498,000 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | (146,000) |  | (146,000) | 0 |
Entergy New Orleans [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  | 3,080,000 |  |
Entergy New Orleans [Member] | Nonqualified Plan |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 34,000 | 31,000 | 104,000 | 93,000 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |  | 0 |  | 0 |
Entergy New Orleans [Member] | Qualified Plan |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 5,041,000 | 279,000 | 5,639,000 | 830,000 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | (6,195,000) |  | (6,195,000) | 0 |
Entergy Texas [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  | 4,735,000 |  |
Entergy Texas [Member] | Nonqualified Plan |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 39,000 | 62,000 | 117,000 | 186,000 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |  | 0 |  | 0 |
Entergy Texas [Member] | Qualified Plan |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 1,106,000 | 111,000 | 2,230,000 | 328,000 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | (617,000) |  | (617,000) | 0 |
System Energy [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  | 9,498,000 |  |
System Energy [Member] | Qualified Plan |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 1,710,000 | $ 1,308,000 | 4,702,000 | 4,509,000 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | $ (512,000) |  | $ (512,000) | $ (611,000) |
Subsequent Event [Member] | Entergy Arkansas [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year |  |  |  |  | $ 12,384,000
Subsequent Event [Member] | Entergy Louisiana [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year |  |  |  |  | 15,870,000
Subsequent Event [Member] | Entergy Mississippi [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year |  |  |  |  | 2,742,000
Subsequent Event [Member] | Entergy New Orleans [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year |  |  |  |  | 1,936,000
Subsequent Event [Member] | Entergy Texas [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year |  |  |  |  | 2,990,000
Subsequent Event [Member] | System Energy [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year |  |  |  |  | $ 6,170,000

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