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Acquisitions, Held for Sale, and Dispositions (Narrative) (Details)
$ in Thousands
 1 Months Ended 12 Months Ended
Jul. 31, 2025
Apr. 30, 2025
USD ($)
Mar. 31, 2025
USD ($)
Nov. 30, 2024
USD ($)
Sep. 30, 2024
USD ($)
Aug. 31, 2024
USD ($)
Feb. 29, 2024
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Jul. 01, 2025
USD ($)
Aug. 31, 2022
MW
Sep. 30, 2020
MW
Jun. 30, 2020
MW
Business Combination [Line Items]                            
Proceeds from Sale of Productive Assets               $ 858,588 $ 0 $ 11,000        
Asset Retirement Obligation               4,947,500 4,713,400 4,505,800        
Public Utilities, Property, Plant and Equipment, Net               52,854,614 47,422,950          
Entergy Arkansas [Member]                            
Business Combination [Line Items]                            
Asset Retirement Obligation               1,791,400 1,691,600 1,560,100        
Public Utilities, Property, Plant and Equipment, Net               11,360,707 10,674,012          
Entergy Arkansas [Member] | Walnut Bend Solar facility [Member]                            
Business Combination [Line Items]                            
Payments to Acquire Productive Assets     $ 1,000   $ 16,000   $ 170,000              
Generation Capacity | MW                           100
Entergy Arkansas [Member] | West Memphis Solar facility [Member]                            
Business Combination [Line Items]                            
Payments to Acquire Productive Assets       $ 192,000   $ 48,000                
Generation Capacity | MW                         180  
Entergy Arkansas [Member] | Driver Solar facility [Member]                            
Business Combination [Line Items]                            
Payments to Acquire Productive Assets   $ 300   $ 85,000   $ 308,000                
Generation Capacity | MW                       250    
Entergy Mississippi [Member]                            
Business Combination [Line Items]                            
Proceeds from Sale of Productive Assets               14,469 818 0        
Asset Retirement Obligation               26,500 25,100 8,200        
Public Utilities, Property, Plant and Equipment, Net               7,126,331 5,836,591          
Entergy New Orleans [Member]                            
Business Combination [Line Items]                            
Proceeds from Sale of Productive Assets               283,918 0 0        
Asset Retirement Obligation               5,200 4,900 4,600        
Public Utilities, Property, Plant and Equipment, Net               1,532,345 1,453,408          
Entergy New Orleans [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans natural gas distribution business [Member]                            
Business Combination [Line Items]                            
Disposal Group, Including Discontinued Operation, Consideration                     $ 284,000      
Entergy Louisiana [Member]                            
Business Combination [Line Items]                            
Payments to Acquire Productive Assets               41,435 0 0        
Proceeds from Sale of Productive Assets               200,673 2,109 0        
Asset Retirement Obligation               1,932,400 1,842,900 $ 1,836,200        
Public Utilities, Property, Plant and Equipment, Net               $ 21,487,073 $ 19,024,679          
Entergy Louisiana [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy Louisiana natural gas distribution business [Member]                            
Business Combination [Line Items]                            
Disposal Group, Including Discontinued Operation, Consideration                     $ 200,000      
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration] Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses