v3.26.1
Rate And Regulatory Matters (Narrative - All Other) (Details)
 1 Months Ended 6 Months Ended 8 Months Ended 12 Months Ended
Jul. 31, 2026
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2026
USD ($)
May 31, 2026
USD ($)
Apr. 30, 2026
USD ($)
Mar. 31, 2026
USD ($)
Feb. 28, 2026
USD ($)
Jan. 31, 2026
USD ($)
Oct. 31, 2025
USD ($)
Sep. 30, 2025
USD ($)
MW
Feb. 28, 2027
USD ($)
Aug. 31, 2026
USD ($)
Jun. 30, 2026
USD ($)
$ / kWh
Feb. 28, 2026
USD ($)
Aug. 31, 2025
USD ($)
Jun. 30, 2025
USD ($)
Dec. 31, 2026
USD ($)
Mar. 31, 2027
USD ($)
Mar. 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
Jan. 01, 2027
USD ($)
Apr. 30, 2024
USD ($)
Dec. 31, 2022
USD ($)
Regulatory Liability, Noncurrent   $ 3,989,788,000 $ 3,989,788,000                   $ 3,989,788,000             $ 3,911,839,000      
Regulatory Asset, Noncurrent   4,871,706,000 4,871,706,000                   4,871,706,000             5,005,976,000      
Increase (Decrease) in Deferred Fuel Costs                         131,572,000     $ 263,205,000              
Deferred Fuel Cost   192,004,000 192,004,000                   192,004,000             54,133,000      
Public Utilities, Property, Plant and Equipment, Net   57,123,436,000 57,123,436,000                   57,123,436,000             52,854,614,000      
Entergy Arkansas [Member]                                              
Regulatory Liability, Noncurrent   1,080,012,000 1,080,012,000                   1,080,012,000             1,044,060,000      
Regulatory Asset, Noncurrent   1,660,397,000 1,660,397,000                   1,660,397,000             1,743,848,000      
Increase (Decrease) in Deferred Fuel Costs                         101,077,000     33,234,000              
Deferred Fuel Cost   128,781,000 128,781,000                   128,781,000             27,704,000      
Public Utilities, Property, Plant and Equipment, Net   12,054,733,000 12,054,733,000                   12,054,733,000             11,360,707,000      
Entergy Louisiana [Member]                                              
Regulatory Liability, Noncurrent   1,609,956,000 1,609,956,000                   1,609,956,000             1,630,763,000      
Regulatory Asset, Noncurrent   1,560,175,000 1,560,175,000                   1,560,175,000             1,540,709,000      
Increase (Decrease) in Deferred Fuel Costs                         (36,122,000)     92,390,000              
Deferred Fuel Cost   0 0                   0             15,672,000      
Public Utilities, Property, Plant and Equipment, Net   23,801,910,000 23,801,910,000                   23,801,910,000             21,487,073,000      
Entergy Louisiana [Member] | Winter Storm Fern [Member]                                              
Increase (Decrease) in Deferred Fuel Costs               $ 141,900,000                              
Entergy Mississippi [Member]                                              
Regulatory Liability, Noncurrent   151,574,000 151,574,000                   151,574,000             144,124,000      
Regulatory Asset, Noncurrent   455,052,000 455,052,000                   455,052,000             455,714,000      
Increase (Decrease) in Deferred Fuel Costs                         41,460,000     64,303,000              
Deferred Fuel Cost   52,217,000 52,217,000                   52,217,000             10,757,000      
Public Utilities, Property, Plant and Equipment, Net   7,868,553,000 7,868,553,000                   7,868,553,000             7,126,331,000      
Entergy New Orleans [Member]                                              
Regulatory Liability, Noncurrent   303,695,000 303,695,000                   303,695,000             312,962,000      
Regulatory Asset, Noncurrent   115,051,000 115,051,000                   115,051,000             109,690,000      
Increase (Decrease) in Deferred Fuel Costs                         2,798,000     4,203,000              
Public Utilities, Property, Plant and Equipment, Net   1,568,753,000 1,568,753,000                   1,568,753,000             1,532,345,000      
Entergy Texas [Member]                                              
Regulatory Liability, Noncurrent   175,476,000 175,476,000                   175,476,000             138,969,000      
Regulatory Asset, Noncurrent   500,952,000 500,952,000                   500,952,000             510,806,000      
Increase (Decrease) in Deferred Fuel Costs                         22,358,000     $ 69,075,000              
Deferred Fuel Cost   11,005,000 11,005,000                   11,005,000             0      
Public Utilities, Property, Plant and Equipment, Net   8,842,724,000 8,842,724,000                   8,842,724,000             $ 8,487,879,000      
Energy Cost Recovery Rider [Member] | Entergy Arkansas [Member]                                              
Energy Cost Recovery Rider Rate Per kWh         $ 0.01508                           $ 0.01333        
Energy Cost Recovery Rider [Member] | Entergy Arkansas [Member] | Subsequent Event [Member]                                              
Requested Energy Cost Recovery Rider Rate Per kWh                                   $ 0.01508          
Distribution Cost Recovery Factor Rider [Member] | Entergy Texas [Member]                                              
Public Utilities, Requested Rate Increase (Decrease), Amount         (112,500,000)                                    
Incremental annual revenues         20,400,000                                    
Transmission Cost Recovery Factor Rider [Member] | Entergy Texas [Member]                                              
Public Utilities, Requested Rate Increase (Decrease), Amount                 $ (30,300,000)                            
Incremental annual revenues                 $ 20,600,000                            
Arkansas Cypress Solar [Member] | Entergy Arkansas [Member] | Solar photovoltaic array [Member]                                              
Generation Capacity | MW                   600                          
Arkansas Cypress Solar [Member] | Entergy Arkansas [Member] | Battery energy storage system [Member]                                              
Generation Capacity | MW                   350                          
Arkansas Cypress Solar [Member] | Entergy Arkansas [Member] | Arkansas Cypress Solar [Member]                                              
Public Utilities, Property, Plant and Equipment, Generation or Processing                   $ 1,602,000,000                          
2026 Formula Rate Plan Filing [Member] | Entergy Arkansas [Member]                                              
Public Utilities, Requested Return on Equity, Percentage                                       9.65%      
Public Utilities, Requested Rate Increase (Decrease), Amount                                       $ 8,800,000      
Earned rate of return on common equity                                       8.80%      
Netting Adjustment                                       $ 47,200,000      
Historical Increase in Formula Rate Plan Revenues                                       56,000,000.0      
2026 Formula Rate Plan Filing [Member] | Entergy Arkansas [Member] | Formula rate plan historical year rate adjustment [Member]                                              
Regulatory Liability, Noncurrent   8,800,000 8,800,000                   $ 8,800,000                    
2026 Formula Rate Plan Filing [Member] | Entergy Arkansas [Member] | Subsequent Event [Member]                                              
Annual revenue constraint percentage 400.00%                                            
2026 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member]                                              
Public Utilities, Requested Return on Equity, Percentage             7.64%                                
Public Utilities, Requested Rate Increase (Decrease), Amount     $ 0       $ 0                         $ 0      
Public Utilities, Interim Rate Increase (Decrease), Amount             $ 293,000                                
Earned return on rate base     7.68%                                 8.10%      
2026 Formula Rate Plan Filing [Member] | Entergy New Orleans [Member]                                              
Public Utilities, Requested Rate Increase (Decrease), Amount         $ (16,600,000)                                    
Public Utilities, Approved Return on Equity, Percentage         9.35%                                    
Earned return on equity         7.55%                                    
2026 Formula Rate Plan Filing [Member] | Entergy New Orleans [Member] | Subsequent Event [Member]                                              
Recommended reduction to requested rate increase $ 4,400,000                                            
Proposed surcharge recovery amount 20,000,000                                            
Generation Cost Recovery Factor Rider [Member] | Entergy Texas [Member]                                              
Public Utilities, Requested Rate Increase (Decrease), Amount           $ (150,400,000)                                  
2026 Base Rate Case [Member] | Entergy Arkansas [Member]                                              
Public Utilities, Requested Return on Equity, Percentage             9.90%                                
Public Utilities, Requested Rate Increase (Decrease), Amount             $ (44,600,000)                                
Generating Arkansas Jobs Act Rider [Member] | Entergy Arkansas [Member]                                              
Public Utilities, Requested Rate Increase (Decrease), Amount   $ (110,400,000)                                          
Resilience Plan Cost Recovery Rider [Member] | Entergy Louisiana [Member]                                              
Public Utilities, Requested Rate Increase (Decrease), Amount                           $ (50,200,000) $ (40,400,000)                
Incremental annual revenues                           $ 9,800,000 $ 38,900,000                
Phase One Investment in Resilience Plan, Requested                                             $ 5,000,000,000
Phase One Investment in Resilience Plan                                           $ 1,900,000,000  
Resilience Plan Cost Recovery Rider [Member] | Entergy Louisiana [Member] | Resilience Rider Under-Recovery [Member]                                              
Regulatory Asset               $ 5,600,000                              
Resilience Plan Cost Recovery Rider [Member] | Entergy Louisiana [Member] | Subsequent Event [Member]                                              
Public Utilities, Requested Rate Increase (Decrease), Amount                     $ (114,200,000) $ (101,800,000)                      
Incremental annual revenues                     $ 12,400,000 $ 51,600,000                      
Resilience Plan Cost Recovery Rider [Member] | Entergy Louisiana [Member] | Subsequent Event [Member] | Resilience Rider Under-Recovery [Member]                                              
Regulatory Asset                                         $ 2,500,000    
Resilience Plan Cost Recovery Rider [Member] | Entergy Louisiana [Member] | Subsequent Event [Member] | Resilience Rider Over-Recovery [Member]                                              
Regulatory Liability $ 16,600,000                                            
Capacity Cost Recovery Rider [Domain] | Entergy Texas [Member]                                              
Public Utilities, Requested Rate Increase (Decrease), Amount       $ (58,000,000)                                      
2025 Formula Rate Plan Filing [Member] | Entergy Louisiana [Member]                                              
Public Utilities, Requested Return on Equity, Percentage     9.70%                                        
Public Utilities, Requested Rate Increase (Decrease), Amount     $ (222,000,000)                                        
Earned rate of return on common equity     9.63%                                        
Basis points bandwidth above and below midpoint return on common equity     40                                        
Customer rate credits     $ 73,000,000                                        
2025 Formula Rate Plan Filing [Member] | Entergy Louisiana [Member] | 2025 Test Year [Member]                                              
Public Utilities, Requested Rate Increase (Decrease), Amount     $ 0                                        
River Bend Deregulated Asset Plan Filing [Member] | Entergy Louisiana [Member]                                              
Public Utilities, Requested Rate Increase (Decrease), Amount                   $ (49,000,000)                          
Rate At Which Electricity Sold To Retail Customers | $ / kWh                         4.6                    
River Bend 70 Depreciation LPSC Complaint [Member] | Entergy Texas [Member]                                              
Potential surcharges due from Entergy Texas to Entergy Louisiana       $ 100,000,000                                      
Joint Targeted Interconnection Queue Cost Allocation Dispute [Member] | Entergy Texas [Member]                                              
Estimate of proposed MISO cost assignment charges         $ 112,000,000                                    
Vegetation Management Rider [Member] | Entergy Louisiana [Member] | Subsequent Event [Member]                                              
Public Utilities, Requested Rate Increase (Decrease), Amount                                 $ (20,000,000)            
Request for Extension of Formula Rate Plan [Member] | Entergy Louisiana [Member]                                              
Public Utilities, Approved Return on Equity, Percentage     9.70%                                        
Basis points bandwidth above and below midpoint return on common equity     40                                        
Request for Extension of Formula Rate Plan [Member] | Entergy New Orleans [Member] | Subsequent Event [Member]                                              
Public Utilities, Approved Return on Equity, Percentage 9.35%                                            
Basis points bandwidth above and below midpoint return on common equity 50