v3.26.1
Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 6 Months Ended
May 31, 2026
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Jan. 01, 2027
Dec. 31, 2025
Regulatory Liability, Noncurrent   $ 3,989,788   $ 3,989,788     $ 3,911,839
Increase (Decrease) in Regulatory Liabilities       32,992 $ 20,040    
Income Tax Expense (Benefit)   131,678 $ 138,399 219,468 238,440    
Amortization of tax gross-up on customer advances   40,400 9,100 63,200 24,600    
Entergy New Orleans [Member]              
Regulatory Liability, Noncurrent   303,695   303,695     312,962
Increase (Decrease) in Regulatory Liabilities       (13,655) (13,791)    
Income Tax Expense (Benefit)   4,654 5,744 4,555 9,483    
Entergy Arkansas [Member]              
Regulatory Liability, Noncurrent   1,080,012   1,080,012     1,044,060
Increase (Decrease) in Regulatory Liabilities       51,004 65,970    
Income Tax Expense (Benefit)   18,266 25,677 35,878 48,679    
Amortization of tax gross-up on customer advances   $ 2,800 200 $ 4,200 1,300    
State Effective Income Tax Rate, Percent   4.30%   4.30%      
Entergy Arkansas [Member] | Subsequent Event [Member]              
State Effective Income Tax Rate, Percent           4.10%  
Entergy Louisiana [Member]              
Regulatory Liability, Noncurrent   $ 1,609,956   $ 1,609,956     1,630,763
Increase (Decrease) in Regulatory Liabilities       (54,004) (70,161)    
Income Tax Expense (Benefit)   64,598 72,541 115,154 126,603    
Amortization of tax gross-up on customer advances   27,900 6,900 42,500 13,500    
System Energy [Member]              
Regulatory Liability, Noncurrent   925,415   925,415     897,301
Increase (Decrease) in Regulatory Liabilities       22,573 52,405    
Income Tax Expense (Benefit)   4,883 5,119 9,219 11,395    
Entergy Mississippi [Member]              
Regulatory Liability, Noncurrent   151,574   151,574     144,124
Increase (Decrease) in Regulatory Liabilities       3,703 (1,066)    
Income Tax Expense (Benefit)   33,641 26,115 61,123 41,032    
Amortization of tax gross-up on customer advances   9,500 1,600 15,800 7,600    
Entergy Texas [Member]              
Regulatory Liability, Noncurrent   175,476   175,476     $ 138,969
Increase (Decrease) in Regulatory Liabilities       23,369 (13,317)    
Income Tax Expense (Benefit)   19,959 16,318 34,284 28,662    
Amortization of tax gross-up on customer advances   $ 200 $ 400 $ 700 $ 2,200    
Income taxes | Entergy Arkansas [Member]              
Increase (Decrease) in Regulatory Liabilities $ 16,000