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Retirement And Other Postretirement Benefits (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2022 | Jun. 30, 2022 | Jun. 30, 2021
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year | $ 200,000 |  |  | $ 200,000 |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  |  | 101,000 |
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 | 40,840 |  |  | 40,840 |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  |  | 21,532 |
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 | 22,917 |  |  | 22,917 |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  |  | 13,410 |
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 | 12,852 |  |  | 12,852 |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  |  | 5,442 |
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 | 922 |  |  | 922 |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  |  | 922 |
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 | 1,924 |  |  | 1,924 |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  |  | 1,486 |
Difference between rate case pension amounts and actuarially determined pension amounts | 15,700 |  |  | 15,700 |
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 | 12,760 |  |  | 12,760 |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  |  | 6,187 |
Subsequent Event [Member] | Entergy Arkansas [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  | $ 19,308 |  |
Subsequent Event [Member] | Entergy Louisiana [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  | 9,507 |  |
Subsequent Event [Member] | Entergy Mississippi [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  | 7,410 |  |
Subsequent Event [Member] | Entergy New Orleans [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  | 0 |  |
Subsequent Event [Member] | Entergy Texas [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  | 438 |  |
Subsequent Event [Member] | System Energy [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  | $ 6,573 |  |
Non Qualified Pension Plans [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Net other postretirement benefit cost | 7,200 | $ 4,600 |  | 17,400 | $ 9,200
Defined Benefit Plan, Benefit Obligation, Payment for Settlement | 2,500 |  |  | 7,800 |
Non Qualified Pension Plans [Member] | Entergy Arkansas [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Net other postretirement benefit cost | 71 | 90 |  | 143 | 180
Non Qualified Pension Plans [Member] | Entergy Louisiana [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Net other postretirement benefit cost | 26 | 44 |  | 53 | 88
Non Qualified Pension Plans [Member] | Entergy Mississippi [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Net other postretirement benefit cost | 79 | 96 |  | 161 | 192
Defined Benefit Plan, Benefit Obligation, Payment for Settlement |  |  |  | 2 |
Non Qualified Pension Plans [Member] | Entergy New Orleans [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Net other postretirement benefit cost | 27 | 8 |  | 56 | 16
Non Qualified Pension Plans [Member] | Entergy Texas [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Net other postretirement benefit cost | 88 | 115 |  | 303 | 230
Defined Benefit Plan, Benefit Obligation, Payment for Settlement |  |  |  | 119 |
Pension Plans Defined Benefit [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Net other postretirement benefit cost | 65,634 | 188,642 |  | 111,385 | 278,657
Defined Benefit Plan, Benefit Obligation, Payment for Settlement | (22,653) | (111,549) |  | (22,653) | (111,549)
Pension Plans Defined Benefit [Member] | Entergy Arkansas [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Net other postretirement benefit cost | 21,773 | 39,003 |  | 32,127 | 54,393
Defined Benefit Plan, Benefit Obligation, Payment for Settlement | (11,496) | (24,386) |  | (11,496) | (24,386)
Pension Plans Defined Benefit [Member] | Entergy Louisiana [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Net other postretirement benefit cost | 15,394 | 49,989 |  | 26,494 | 66,258
Defined Benefit Plan, Benefit Obligation, Payment for Settlement | (4,461) | (34,992) |  | (4,461) | (34,992)
Pension Plans Defined Benefit [Member] | Entergy Mississippi [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Net other postretirement benefit cost | 5,535 | 12,346 |  | 8,950 | 17,254
Defined Benefit Plan, Benefit Obligation, Payment for Settlement | (2,208) | (7,762) |  | (2,208) | (7,762)
Pension Plans Defined Benefit [Member] | Entergy New Orleans [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Net other postretirement benefit cost | 744 | 4,866 |  | 1,488 | 6,339
Defined Benefit Plan, Benefit Obligation, Payment for Settlement | 0 | (3,585) |  | 0 | (3,585)
Pension Plans Defined Benefit [Member] | Entergy Texas [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Net other postretirement benefit cost | 3,851 | 8,578 |  | 5,276 | 10,801
Defined Benefit Plan, Benefit Obligation, Payment for Settlement | (2,466) | (6,626) |  | (2,466) | (6,626)
Pension Plans Defined Benefit [Member] | System Energy [Member] |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |
Net other postretirement benefit cost | 5,003 | 9,256 |  | 8,029 | 14,257
Defined Benefit Plan, Benefit Obligation, Payment for Settlement | $ (2,023) | $ (4,638) |  | $ (2,023) | $ (4,638)

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