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Leases (Lease, Assets) (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Operating Lease, Right-of-Use Asset $ 278,000 $ 277,000
Finance Lease, Right-of-Use Asset, after Accumulated Amortization 111,000 110,000
Entergy Louisiana [Member]    
Operating Lease, Right-of-Use Asset 66,726 65,909
Finance Lease, Right-of-Use Asset, after Accumulated Amortization 28,637 26,159
Entergy Louisiana [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy Louisiana natural gas distribution business [Member]    
Disposal group, Assets, Public Utilities, Property, Plant, and Equipment, Natural Gas - Operating Leases   400
Disposal group, Assets, Public Utilities, Property, Plant, and Equipment, Natural Gas - Finance Leases   1,400
Entergy Mississippi [Member]    
Operating Lease, Right-of-Use Asset 32,502 32,399
Finance Lease, Right-of-Use Asset, after Accumulated Amortization 23,456 22,641
Entergy New Orleans [Member]    
Operating Lease, Right-of-Use Asset 7,940 7,971
Finance Lease, Right-of-Use Asset, after Accumulated Amortization 3,613 6,451
Entergy New Orleans [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans natural gas distribution business [Member]    
Disposal group, Assets, Public Utilities, Property, Plant, and Equipment, Natural Gas - Operating Leases   400
Disposal group, Assets, Public Utilities, Property, Plant, and Equipment, Natural Gas - Finance Leases   3,000
Entergy Texas [Member]    
Operating Lease, Right-of-Use Asset 26,070 27,524
Finance Lease, Right-of-Use Asset, after Accumulated Amortization 11,550 10,822
Entergy Arkansas [Member]    
Operating Lease, Right-of-Use Asset 75,148 64,960
Finance Lease, Right-of-Use Asset, after Accumulated Amortization $ 37,616 $ 36,105