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Retirement, Other Postretirement Benefits, And Defined Contribution Plans (Schedule of reclassifications out of accumulated other comprehensive income) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]    
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax $ 9,644 $ 7,327
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement Gain (Loss), Reclassification Adjustment from AOCI, before Tax (420) (319,978)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax 23,078 (298,755)
Amortization of prior service cost/(credit) 13,854 13,896
Pension Plan [Member] | Qualified Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax (1,658) (2,820)
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement Gain (Loss), Reclassification Adjustment from AOCI, before Tax (167) (319,920)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax (1,825) (322,740)
Amortization of prior service cost/(credit) 0 0
Pension Plan [Member] | Nonqualified Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax (410) (312)
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement Gain (Loss), Reclassification Adjustment from AOCI, before Tax (253) (58)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax (788) (529)
Amortization of prior service cost/(credit) (125) (159)
Other Postretirement Benefits Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax 11,712 10,459
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement Gain (Loss), Reclassification Adjustment from AOCI, before Tax 0 0
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax 25,691 24,514
Amortization of prior service cost/(credit) 13,979 14,055
Entergy Louisiana [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax 6,249 6,533
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement Gain (Loss), Reclassification Adjustment from AOCI, before Tax (106) (2)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax 10,688 11,075
Amortization of prior service cost/(credit) 4,545 4,544
Entergy Louisiana [Member] | Pension Plan [Member] | Qualified Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax (371) (416)
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement Gain (Loss), Reclassification Adjustment from AOCI, before Tax (106) 0
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax (477) (416)
Amortization of prior service cost/(credit) 0 0
Entergy Louisiana [Member] | Pension Plan [Member] | Nonqualified Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax (2) (3)
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement Gain (Loss), Reclassification Adjustment from AOCI, before Tax 0 (2)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax (2) (5)
Amortization of prior service cost/(credit) 0 0
Entergy Louisiana [Member] | Other Postretirement Benefits Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax 6,622 6,952
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement Gain (Loss), Reclassification Adjustment from AOCI, before Tax 0 0
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax 11,167 11,496
Amortization of prior service cost/(credit) $ 4,545 $ 4,544