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Retirement, Other Postretirement Benefits, And Defined Contribution Plans (Schedule of Accumulated and Projected Benefit Obligations) (Details) - Pension Plan [Member] - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Qualified Plan [Member]      
Defined Benefit Plan, Benefit Obligation $ 4,584,311 $ 4,520,691 $ 5,915,404
Defined Benefit Plan, Accumulated Benefit Obligation 4,200,000 4,100,000  
Nonqualified Plan [Member]      
Defined Benefit Plan, Benefit Obligation 96,300 94,100  
Defined Benefit Plan, Accumulated Benefit Obligation 79,900 81,200  
Entergy Arkansas [Member] | Qualified Plan [Member]      
Defined Benefit Plan, Benefit Obligation 1,068,987 1,061,063 1,117,585
Defined Benefit Plan, Accumulated Benefit Obligation 988,724 980,559  
Entergy Arkansas [Member] | Nonqualified Plan [Member]      
Defined Benefit Plan, Benefit Obligation 2,105 1,721  
Defined Benefit Plan, Accumulated Benefit Obligation 1,654 1,468  
Entergy Louisiana [Member] | Qualified Plan [Member]      
Defined Benefit Plan, Benefit Obligation 1,109,155 1,123,024 1,173,283
Defined Benefit Plan, Accumulated Benefit Obligation 1,014,433 1,024,433  
Entergy Louisiana [Member] | Nonqualified Plan [Member]      
Defined Benefit Plan, Benefit Obligation 1,886 1,405  
Defined Benefit Plan, Accumulated Benefit Obligation 1,299 1,197  
Entergy Mississippi [Member] | Qualified Plan [Member]      
Defined Benefit Plan, Benefit Obligation 285,180 283,071 295,942
Defined Benefit Plan, Accumulated Benefit Obligation 259,995 257,759  
Entergy Mississippi [Member] | Nonqualified Plan [Member]      
Defined Benefit Plan, Benefit Obligation 3,858 3,566  
Defined Benefit Plan, Accumulated Benefit Obligation 3,464 3,322  
Entergy New Orleans [Member] | Qualified Plan [Member]      
Defined Benefit Plan, Benefit Obligation 101,722 127,133 133,950
Defined Benefit Plan, Accumulated Benefit Obligation 96,241 118,620  
Entergy New Orleans [Member] | Nonqualified Plan [Member]      
Defined Benefit Plan, Benefit Obligation 1,335 1,143  
Defined Benefit Plan, Accumulated Benefit Obligation 1,163 939  
Entergy Texas [Member] | Qualified Plan [Member]      
Defined Benefit Plan, Benefit Obligation 224,441 229,942 239,984
Defined Benefit Plan, Accumulated Benefit Obligation 207,772 212,935  
Entergy Texas [Member] | Nonqualified Plan [Member]      
Defined Benefit Plan, Benefit Obligation 2,844 2,734  
Defined Benefit Plan, Accumulated Benefit Obligation 2,832 2,710  
System Energy [Member] | Qualified Plan [Member]      
Defined Benefit Plan, Benefit Obligation 277,033 275,117 $ 286,558
Defined Benefit Plan, Accumulated Benefit Obligation $ 253,108 $ 252,397