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Retirement, Other Postretirement Benefits, And Defined Contribution Plans (Narrative) (Details)
$ in Thousands
1 Months Ended 9 Months Ended 12 Months Ended
May 31, 2024
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Defined Benefit Plan Disclosure [Line Items]          
Liability, Defined Benefit Plan, Noncurrent   $ 254,704 $ 113,930 $ 254,704  
Liability, Defined Benefit Plan, Current   $ 64,854 $ 63,214 $ 64,854  
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate   4.75% 4.75% 4.75% 4.75%
Defined Contribution Plan, Cost     $ 77,400 $ 72,300 $ 65,100
Regulatory Asset, Noncurrent   $ 5,255,509 5,005,976 5,255,509  
Regulatory Liability, Noncurrent   3,609,463 3,911,839 3,609,463  
Disposal Group, Including Discontinued Operation, Assets, Noncurrent   462,797 0 462,797  
Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans and Entergy Louisiana natural gas distribution businesses [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Disposal Group, Liabilities, Defined Benefit Plan, Noncurrent   3,976   3,976  
Disposal Group, Assets, Defined Benefit Plan, Noncurrent   14,663   14,663  
Disposal Group, Including Discontinued Operation, Assets, Noncurrent   462,797   462,797  
Disposal Group, Assets, Regulatory Asset, Noncurrent   35,381 $ 35,400 35,381  
Savings Plan of Entergy Corporation and Subsidiaries          
Defined Benefit Plan Disclosure [Line Items]          
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay     6.00%    
Savings Plan of Entergy Corporation and Subsidiaries VIII and the Savings Plan of Entergy Corporation and Subsidiaries IX          
Defined Benefit Plan Disclosure [Line Items]          
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay     5.00%    
Defined Contribution Plan, Employer Discretionary Contribution, Percent     4.00%    
Defined Contribution Plan, Employer Matching Contribution, Percent of Match     100.00%    
Pension & postretirement benefits expense deferral [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Regulatory Asset, Noncurrent   15,000 $ 900 15,000  
Other Postretirement Benefits Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Plan Assets, Amount   698,602 726,017 698,602 673,141
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     (20,279) (24,291) (13,810)
Defined Benefit Plan, Benefit Obligation   754,682 804,336 754,682 837,644
Liability, Defined Benefit Plan, Noncurrent   13,550 37,903 13,550  
Liability, Defined Benefit Plan, Current   42,530 40,416 42,530  
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax   (154,008) (91,480) (154,008)  
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)     (22,763) (22,880) (22,558)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement     (2,958) 0 0
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year     40,900    
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax   (12,729) (3,220) (12,729)  
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax   (78,520) (63,249) (78,520)  
Defined Benefit Plan, Regulatory Asset (Liability), before Tax   (91,249) $ (66,469) (91,249)  
Other Postretirement Benefits Plan [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans and Entergy Louisiana natural gas distribution businesses [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Disposal Group, Assets, Defined Benefit Plan, Noncurrent   14,700   14,700  
Disposal Group, Assets, Regulatory Asset, Noncurrent   1,900   1,900  
Other Postretirement Benefits Plan [Member] | Defined Benefit Plan Total Plan Assets [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Percentage     10.00%    
Pension Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Plan Assets, Amount   4,432,732 $ 4,798,964 4,432,732  
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year     200,000    
Pension Plan [Member] | Group annuity contract purchase          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement       (328,000)  
Pension Plan [Member] | Corporate Segment and Other Operating Segment [Member] | Group annuity contract purchase          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement       (320,000)  
Pension Plan [Member] | Utility [Member] | Group annuity contract purchase          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement       (8,000)  
Pension Plan [Member] | Nonqualified Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Accumulated Benefit Obligation   81,200 79,900 81,200  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     13,500 12,200 43,800
Defined Benefit Plan, Benefit Obligation   94,100 96,300 94,100  
Liability, Defined Benefit Plan, Noncurrent   71,800 73,500 71,800  
Liability, Defined Benefit Plan, Current   22,300 22,800 22,300  
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax   4,700 4,800 4,700  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement     3,800 1,500 27,900
Common Stock Issued, Employee Stock Trust     25,000    
Defined Benefit Plan, Regulatory Asset (Liability), before Tax   29,800 32,300 29,800  
Pension Plan [Member] | Qualified Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Plan Assets, Amount   4,432,732 4,798,964 4,432,732 5,460,601
Defined Benefit Plan, Accumulated Benefit Obligation   4,100,000 4,200,000 4,100,000  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     99,251 391,473 253,739
Defined Benefit Plan, Benefit Obligation   4,520,691 4,584,311 4,520,691 5,915,404
Liability, Defined Benefit Plan, Noncurrent   158,630 2,478 158,630  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement     (23,874) (328,277) (160,387)
Defined Benefit Plan, Plan Assets, Payment for Settlement     (1,205,195)    
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax   1,217,402 1,056,610 1,217,402  
Assets for Plan Benefits, Defined Benefit Plan   70,671 217,131 70,671  
Pension Plan [Member] | Qualified Plan [Member] | Sale of gas distribution business - ongoing payment of lump sum benefits          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement     (12,100)    
Pension Plan [Member] | Qualified Plan [Member] | Sale of the gas business settlement charges          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement     (11,800)    
Pension Plan [Member] | Qualified Plan [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans and Entergy Louisiana natural gas distribution businesses [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Disposal Group, Liabilities, Defined Benefit Plan, Noncurrent     4,000    
Disposal Group, Assets, Regulatory Asset, Noncurrent     $ 13,900    
Pension Plan [Member] | Qualified Plan [Member] | Group annuity contract purchase          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement   328,000      
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement $ 1,200,000        
Group annuity contract population 3,400        
Pension Plan [Member] | Qualified Plan [Member] | Corporate Segment and Other Operating Segment [Member] | Group annuity contract purchase          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement   320,000      
Pension Plan [Member] | Qualified Plan [Member] | Utility [Member] | Group annuity contract purchase          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement   8,000      
Pension Plan [Member] | Defined Benefit Plan Total Plan Assets [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Percentage     10.00%    
Entergy Arkansas [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Contribution Plan, Cost     $ 7,550 6,822 5,866
Regulatory Asset, Noncurrent   1,700,110 1,743,848 1,700,110  
Regulatory Liability, Noncurrent   831,165 1,044,060 831,165  
Entergy Arkansas [Member] | Other Postretirement Benefits Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Plan Assets, Amount   284,095 305,246 284,095 274,814
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     (6,831) (5,538) (1,879)
Defined Benefit Plan, Benefit Obligation   138,212 147,875 138,212 155,987
Liability, Defined Benefit Plan, Noncurrent   0 0 0  
Liability, Defined Benefit Plan, Current   0 0 0  
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax   0 0 0  
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)     2,097 2,097 2,096
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement     0    
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year     710    
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax   2,886 789 2,886  
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax   (38,054) (39,563) (38,054)  
Defined Benefit Plan, Regulatory Asset (Liability), before Tax   (35,168) (38,774) (35,168)  
Assets for Plan Benefits, Defined Benefit Plan   145,883 157,371 145,883  
Entergy Arkansas [Member] | Pension Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year     29,716    
Entergy Arkansas [Member] | Pension Plan [Member] | Nonqualified Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Accumulated Benefit Obligation   1,468 1,654 1,468  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     184 269 637
Defined Benefit Plan, Benefit Obligation   1,721 2,105 1,721  
Liability, Defined Benefit Plan, Noncurrent   1,197 1,567 1,197  
Liability, Defined Benefit Plan, Current   524 538 524  
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax   0 0 0  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement         379
Defined Benefit Plan, Regulatory Asset (Liability), before Tax   119 441 119  
Entergy Arkansas [Member] | Pension Plan [Member] | Qualified Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Plan Assets, Amount   1,043,188 1,119,253 1,043,188 991,894
Defined Benefit Plan, Accumulated Benefit Obligation   980,559 988,724 980,559  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     20,856 19,631 49,450
Defined Benefit Plan, Benefit Obligation   1,061,063 1,068,987 1,061,063 1,117,585
Liability, Defined Benefit Plan, Noncurrent   47,396   47,396  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement     (1,454) 0 (26,137)
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax   412,777 359,324 412,777  
Assets for Plan Benefits, Defined Benefit Plan   29,521 50,266 29,521  
Entergy Louisiana [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Liability, Defined Benefit Plan, Noncurrent   160,577 159,075 160,577  
Defined Contribution Plan, Cost     9,529 8,784 7,757
Regulatory Asset, Noncurrent   1,637,967 1,540,709 1,637,967  
Regulatory Liability, Noncurrent   1,692,547 1,630,763 1,692,547  
Disposal Group, Including Discontinued Operation, Assets, Noncurrent   173,669 0 173,669  
Entergy Louisiana [Member] | Other Postretirement Benefits Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Plan Assets, Amount   0 0 0 0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     (5,612) (701) 1,449
Defined Benefit Plan, Benefit Obligation   156,831 171,520 156,831 170,139
Liability, Defined Benefit Plan, Noncurrent   142,454 157,380 142,454  
Liability, Defined Benefit Plan, Current   14,377 14,140 14,377  
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax   (84,131) (48,126) (84,131)  
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)     (4,545) (4,544) (3,804)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement     (1,014)    
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year     14,140    
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax   0 0 0  
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax   0 0 0  
Defined Benefit Plan, Regulatory Asset (Liability), before Tax   0 0 0  
Assets for Plan Benefits, Defined Benefit Plan   0 0 0  
Entergy Louisiana [Member] | Pension Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year     41,599    
Entergy Louisiana [Member] | Pension Plan [Member] | Nonqualified Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Accumulated Benefit Obligation   1,197 1,299 1,197  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     140 256 99
Defined Benefit Plan, Benefit Obligation   1,405 1,886 1,405  
Liability, Defined Benefit Plan, Noncurrent   1,215 1,695 1,215  
Liability, Defined Benefit Plan, Current   190 191 190  
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax   (21) (45) (21)  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement       55  
Defined Benefit Plan, Regulatory Asset (Liability), before Tax   493 1,079 493  
Entergy Louisiana [Member] | Pension Plan [Member] | Qualified Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Plan Assets, Amount   1,111,601 1,185,358 1,111,601 1,058,711
Defined Benefit Plan, Accumulated Benefit Obligation   1,024,433 1,014,433 1,024,433  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     16,905 10,668 69,539
Defined Benefit Plan, Benefit Obligation   1,123,024 1,109,155 1,123,024 1,173,283
Liability, Defined Benefit Plan, Noncurrent   21,433   21,433  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement     (5,982) 0 (40,437)
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax   256,316 195,570 256,316  
Assets for Plan Benefits, Defined Benefit Plan   10,010 76,203 10,010  
Entergy Mississippi [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Contribution Plan, Cost     4,524 4,048 3,534
Regulatory Asset, Noncurrent   525,847 455,714 525,847  
Regulatory Liability, Noncurrent   59,544 144,124 59,544  
Entergy Mississippi [Member] | Other postretirement benefits [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Regulatory Liability, Noncurrent   7,400 18,600 7,400  
Entergy Mississippi [Member] | Other Postretirement Benefits Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Plan Assets, Amount   89,144 95,870 89,144 85,662
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     (3,892) (3,699) (2,538)
Defined Benefit Plan, Benefit Obligation   38,143 40,800 38,143 41,344
Liability, Defined Benefit Plan, Noncurrent   0 0 0  
Liability, Defined Benefit Plan, Current   0 0 0  
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax   0 0 0  
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)     (955) (955) (955)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement     0    
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year     176    
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax   (1,727) (772) (1,727)  
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax   (8,791) (9,706) (8,791)  
Defined Benefit Plan, Regulatory Asset (Liability), before Tax   (10,518) (10,478) (10,518)  
Assets for Plan Benefits, Defined Benefit Plan   51,001 55,070 51,001  
Entergy Mississippi [Member] | Pension Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year     3,991    
Entergy Mississippi [Member] | Pension Plan [Member] | Nonqualified Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Accumulated Benefit Obligation   3,322 3,464 3,322  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     558 326 808
Defined Benefit Plan, Benefit Obligation   3,566 3,858 3,566  
Liability, Defined Benefit Plan, Noncurrent   3,147 3,514 3,147  
Liability, Defined Benefit Plan, Current   419 344 419  
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax   0 0 0  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement     215   453
Defined Benefit Plan, Regulatory Asset (Liability), before Tax   1,292 1,764 1,292  
Entergy Mississippi [Member] | Pension Plan [Member] | Qualified Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Plan Assets, Amount   294,458 313,385 294,458 280,260
Defined Benefit Plan, Accumulated Benefit Obligation   257,759 259,995 257,759  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     3,234 3,330 19,715
Defined Benefit Plan, Benefit Obligation   283,071 285,180 283,071 295,942
Liability, Defined Benefit Plan, Noncurrent   8,279   8,279  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement     (146) 0 (12,242)
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax   86,790 74,801 86,790  
Assets for Plan Benefits, Defined Benefit Plan   19,666 28,205 19,666  
Entergy New Orleans [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Contribution Plan, Cost     1,555 1,584 1,383
Regulatory Asset, Noncurrent   133,261 109,690 133,261  
Regulatory Liability, Noncurrent   260,312 312,962 260,312  
Disposal Group, Including Discontinued Operation, Assets, Noncurrent   284,738 0 284,738  
Entergy New Orleans [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans natural gas distribution business [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Disposal Group, Liabilities, Defined Benefit Plan, Noncurrent   1,197   1,197  
Disposal Group, Assets, Defined Benefit Plan, Noncurrent   19,499   19,499  
Disposal Group, Including Discontinued Operation, Assets, Noncurrent   284,738   284,738  
Disposal Group, Assets, Regulatory Asset, Noncurrent   23,682 23,700 23,682  
Entergy New Orleans [Member] | Other postretirement benefits [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Regulatory Liability, Noncurrent     2,400    
Entergy New Orleans [Member] | Other Postretirement Benefits Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Plan Assets, Amount   105,600 90,694 105,600 100,536
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     12,329 (5,540) (4,318)
Defined Benefit Plan, Benefit Obligation   19,701 15,624 19,701 21,685
Liability, Defined Benefit Plan, Noncurrent   0 0 0  
Liability, Defined Benefit Plan, Current   0 0 0  
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax   0 0 0  
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)     (798) (916) (916)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement     (1,345)    
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year     336    
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax   (1,066) 0 (1,066)  
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax   (8,134) (10,606) (8,134)  
Defined Benefit Plan, Regulatory Asset (Liability), before Tax   (9,200) (10,606) (9,200)  
Assets for Plan Benefits, Defined Benefit Plan   85,899 75,070 85,899  
Entergy New Orleans [Member] | Other Postretirement Benefits Plan [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans natural gas distribution business [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Disposal Group, Assets, Defined Benefit Plan, Noncurrent   19,500   19,500  
Disposal Group, Assets, Regulatory Asset, Noncurrent   1,900   1,900  
Entergy New Orleans [Member] | Pension Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year     3,304    
Entergy New Orleans [Member] | Pension Plan [Member] | Nonqualified Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Accumulated Benefit Obligation   939 1,163 939  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     137 122 132
Defined Benefit Plan, Benefit Obligation   1,143 1,335 1,143  
Liability, Defined Benefit Plan, Noncurrent   1,039 1,240 1,039  
Liability, Defined Benefit Plan, Current   104 95 104  
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax   0 0 0  
Defined Benefit Plan, Regulatory Asset (Liability), before Tax   9 81 9  
Entergy New Orleans [Member] | Pension Plan [Member] | Qualified Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Plan Assets, Amount   125,805 105,704 125,805 117,923
Defined Benefit Plan, Accumulated Benefit Obligation   118,620 96,241 118,620  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     6,371 1,103 3,678
Defined Benefit Plan, Benefit Obligation   127,133 101,722 127,133 133,950
Liability, Defined Benefit Plan, Noncurrent   4,627   4,627  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement     (6,195) 0 (2,080)
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax   34,039 27,375 34,039  
Assets for Plan Benefits, Defined Benefit Plan   3,299 3,982 3,299  
Entergy New Orleans [Member] | Pension Plan [Member] | Qualified Plan [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans natural gas distribution business [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Disposal Group, Liabilities, Defined Benefit Plan, Noncurrent     1,200    
Disposal Group, Assets, Regulatory Asset, Noncurrent     6,700    
Entergy Texas [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Contribution Plan, Cost     4,385 3,907 3,380
Regulatory Asset, Noncurrent   549,708 510,806 549,708  
Regulatory Liability, Noncurrent   18,705 138,969 18,705  
Entergy Texas [Member] | Pension & postretirement benefits expense deferral [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Regulatory Asset, Noncurrent   15,000 863 15,000  
Entergy Texas [Member] | Other Postretirement Benefits Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Plan Assets, Amount   167,744 178,977 167,744 161,318
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     (10,604) (10,855) (8,827)
Defined Benefit Plan, Benefit Obligation   45,609 42,173 45,609 51,617
Liability, Defined Benefit Plan, Noncurrent   0 0 0  
Liability, Defined Benefit Plan, Current   0 0 0  
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax   0 0 0  
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)     (4,371) (4,371) (4,371)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement     0    
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year     149    
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax   (7,419) (3,048) (7,419)  
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax   9,268 650 9,268  
Defined Benefit Plan, Regulatory Asset (Liability), before Tax   1,849 (2,398) 1,849  
Assets for Plan Benefits, Defined Benefit Plan   122,135 136,804 122,135  
Entergy Texas [Member] | Pension Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year     5,931    
Entergy Texas [Member] | Pension Plan [Member] | Nonqualified Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Accumulated Benefit Obligation   2,710 2,832 2,710  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     157 248 253
Defined Benefit Plan, Benefit Obligation   2,734 2,844 2,734  
Liability, Defined Benefit Plan, Noncurrent   2,348 2,454 2,348  
Liability, Defined Benefit Plan, Current   386 390 386  
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax   0 0 0  
Defined Benefit Plan, Regulatory Asset (Liability), before Tax   (3,429) (3,102) (3,429)  
Entergy Texas [Member] | Pension Plan [Member] | Qualified Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Plan Assets, Amount   228,053 237,422 228,053 222,496
Defined Benefit Plan, Accumulated Benefit Obligation   212,935 207,772 212,935  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     2,718 436 15,718
Defined Benefit Plan, Benefit Obligation   229,942 224,441 229,942 239,984
Liability, Defined Benefit Plan, Noncurrent   7,953   7,953  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement     (617) 0 (11,230)
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax   55,902 46,038 55,902  
Assets for Plan Benefits, Defined Benefit Plan   6,064 12,981 6,064  
System Energy [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Regulatory Asset, Noncurrent   426,494 601,185 426,494  
Regulatory Liability, Noncurrent   747,190 897,301 747,190  
System Energy [Member] | Other Postretirement Benefits Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Plan Assets, Amount   46,997 50,330 46,997 45,402
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     (855) (913) (348)
Defined Benefit Plan, Benefit Obligation   30,553 34,795 30,553 33,778
Liability, Defined Benefit Plan, Noncurrent   0 0 0  
Liability, Defined Benefit Plan, Current   0 0 0  
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax   0 0 0  
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)     (293) (293) (293)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement     0    
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year     49    
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax   (203) 90 (203)  
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax   (3,364) (681) (3,364)  
Defined Benefit Plan, Regulatory Asset (Liability), before Tax   (3,567) (591) (3,567)  
Assets for Plan Benefits, Defined Benefit Plan   16,444 15,535 16,444  
System Energy [Member] | Pension Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year     13,249    
System Energy [Member] | Pension Plan [Member] | Qualified Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Plan Assets, Amount   269,899 293,671 269,899 255,443
Defined Benefit Plan, Accumulated Benefit Obligation   252,397 253,108 252,397  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     5,899 5,818 12,627
Defined Benefit Plan, Benefit Obligation   275,117 277,033 275,117 286,558
Liability, Defined Benefit Plan, Noncurrent   8,353   8,353  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement     (512) (615) $ (6,375)
Defined Benefit Plan, Plan Assets, Payment for Settlement       2,100  
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax   96,932 84,844 96,932  
Assets for Plan Benefits, Defined Benefit Plan   $ 3,135 $ 16,638 $ 3,135  
Minimum [Member] | Savings Plan of Entergy Corporation and Subsidiaries          
Defined Benefit Plan Disclosure [Line Items]          
Defined Contribution Plan, Employer Matching Contribution, Percent of Match     70.00%    
Maximum [Member] | Savings Plan of Entergy Corporation and Subsidiaries          
Defined Benefit Plan Disclosure [Line Items]          
Defined Contribution Plan, Employer Matching Contribution, Percent of Match     100.00%