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Rate And Regulatory Matters (Schedule of Regulatory Assets) (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2018
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent $ 5,005,976 $ 5,255,509    
Regulatory Asset, Noncurrent and Noncurrent Assets Held For Sale [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent   5,290,900    
Entergy Arkansas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 1,743,848 1,700,110    
Entergy Louisiana [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 1,540,709 1,637,967    
Entergy Louisiana [Member] | Regulatory Asset, Noncurrent and Noncurrent Assets Held For Sale [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent   1,646,900    
Entergy Mississippi [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 455,714 525,847    
Entergy New Orleans [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 109,690 133,261    
Entergy New Orleans [Member] | Regulatory Asset, Noncurrent and Noncurrent Assets Held For Sale [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent   157,000    
Entergy Texas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 510,806 549,708    
System Energy [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 601,185 426,494    
Asset Retirement Obligation Costs [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 1,437,900 1,358,700    
Asset Retirement Obligation Costs [Member] | Entergy Arkansas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 750,500 693,000    
Asset Retirement Obligation Costs [Member] | Entergy Louisiana [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 438,000 421,500    
Asset Retirement Obligation Costs [Member] | Entergy Mississippi [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 12,200 9,400    
Asset Retirement Obligation Costs [Member] | System Energy [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 222,400 224,800    
Storm Costs [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 481,400 547,300    
Storm Costs [Member] | Entergy Arkansas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 29,300 29,800    
Storm Costs [Member] | Entergy Louisiana [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 188,100 226,600    
Storm Costs [Member] | Entergy New Orleans [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 200 4,000    
Storm Costs [Member] | Entergy Texas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 263,800 286,500    
Removal Costs [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 1,178,900 1,107,600    
Removal Costs [Member] | Entergy Arkansas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 369,600 337,900    
Removal Costs [Member] | Entergy Louisiana [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 348,500 323,200    
Removal Costs [Member] | Entergy Mississippi [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 198,600 184,800    
Removal Costs [Member] | Entergy New Orleans [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 56,800 62,500    
Removal Costs [Member] | Entergy Texas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 105,000 102,300    
Removal Costs [Member] | System Energy [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 100,400 96,900    
Neches and Sabine Costs [Member] | Entergy Texas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 6,700 9,200    
Regulatory Clause Revenues, under-Recovered [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 140,500 195,100    
Regulatory Clause Revenues, under-Recovered [Member] | Entergy Arkansas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 14,600 13,600    
Regulatory Clause Revenues, under-Recovered [Member] | Entergy Mississippi [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 105,300 162,500    
Loss on Reacquired Debt [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 53,600 57,900    
Loss on Reacquired Debt [Member] | Entergy Arkansas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 17,400 18,600    
Loss on Reacquired Debt [Member] | Entergy Louisiana [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 20,300 21,700    
Loss on Reacquired Debt [Member] | Entergy Mississippi [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 8,200 9,100    
Loss on Reacquired Debt [Member] | Entergy New Orleans [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 300 500    
Loss on Reacquired Debt [Member] | Entergy Texas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 7,000 7,600    
Loss on Reacquired Debt [Member] | System Energy [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 400 400    
Opportunity Sales [Member] | Entergy Arkansas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent     $ 131,800 $ 116,000
Retired electric meters [Member] | Entergy Arkansas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 29,200 32,800    
Retired electric meters [Member] | Entergy Texas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 5,800 10,900    
Other Regulatory Assets (Liabilities) [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 61,900 99,700    
Other Regulatory Assets (Liabilities) [Member] | Entergy Arkansas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 10,200 14,700    
Other Regulatory Assets (Liabilities) [Member] | Entergy Louisiana [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 38,100 48,500    
Other Regulatory Assets (Liabilities) [Member] | Entergy Mississippi [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 13,900 18,800    
Other Regulatory Assets (Liabilities) [Member] | Entergy New Orleans [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 11,000 20,700    
Other Regulatory Assets (Liabilities) [Member] | Entergy Texas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 24,900 15,600    
Retired electric and gas meters [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 117,900 135,700    
Retired electric and gas meters [Member] | Entergy Louisiana [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 72,900 78,500    
Retired electric and gas meters [Member] | Entergy New Orleans [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 10,000 13,500    
Deferred COVID-19 costs [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 40,300 104,000    
Deferred COVID-19 costs [Member] | Entergy Arkansas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 31,200 35,100    
Deferred COVID-19 costs [Member] | Entergy Louisiana [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 0 47,800    
Deferred COVID-19 costs [Member] | Entergy New Orleans [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 5,800 10,200    
Pension & postretirement benefits expense deferral [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 900 15,000    
Pension & postretirement benefits expense deferral [Member] | Entergy Texas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 863 15,000    
Qualified Pension Settlement Cost Deferral [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 200,200 227,100    
Qualified Pension Settlement Cost Deferral [Member] | Entergy Arkansas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 68,100 75,800    
Qualified Pension Settlement Cost Deferral [Member] | Entergy Louisiana [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 98,700 111,400    
Qualified Pension Settlement Cost Deferral [Member] | Entergy Mississippi [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 26,000 29,100    
Qualified Pension Settlement Cost Deferral [Member] | Entergy New Orleans [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 7,400 10,800    
Formula rate plan historical year rate adjustment [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 28,300 15,500    
Formula rate plan historical year rate adjustment [Member] | Entergy Arkansas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 28,300 15,500    
Advanced Metering System Surcharge [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 53,700 39,700    
Advanced Metering System Surcharge [Member] | Entergy Texas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 53,700 39,700    
Gas cross-boring costs [Member] | Entergy New Orleans [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 0 11,900    
Pension and Other Postretirement Plans Costs [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 1,067,200 1,207,600    
Pension and Other Postretirement Plans Costs [Member] | Entergy Arkansas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 333,400 391,200    
Pension and Other Postretirement Plans Costs [Member] | Entergy Louisiana [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 215,300 271,500    
Pension and Other Postretirement Plans Costs [Member] | Entergy Mississippi [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 70,300 82,200    
Pension and Other Postretirement Plans Costs [Member] | Entergy New Orleans [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 18,200 22,900    
Pension and Other Postretirement Plans Costs [Member] | Entergy Texas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 43,000 57,100    
Pension and Other Postretirement Plans Costs [Member] | System Energy [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 87,200 96,500    
Production tax credits        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 47,900 0    
Production tax credits | Entergy Arkansas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 37,100 0    
Production tax credits | Entergy Louisiana [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 77,000 0    
Production tax credits | System Energy [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 185,700 0    
Non-service Pension and Othre Postretirement Plan Costs        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 73,000 180,000    
Non-service Pension and Othre Postretirement Plan Costs | Entergy Arkansas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 24,900 42,100    
Non-service Pension and Othre Postretirement Plan Costs | Entergy Louisiana [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 21,400 96,200    
Non-service Pension and Othre Postretirement Plan Costs | Entergy Mississippi [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 21,200 29,900    
Non-service Pension and Othre Postretirement Plan Costs | Entergy Texas [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 0 5,800    
Non-service Pension and Othre Postretirement Plan Costs | System Energy [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 5,100 7,900    
Retired distribution assets - resiliency plan        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent 22,400 0    
Retired distribution assets - resiliency plan | Entergy Louisiana [Member]        
Regulatory Asset [Line Items]        
Regulatory Asset, Noncurrent $ 22,400 $ 0