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Leases (Lease, Cost) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Finance Lease, Right-of-Use Asset, Amortization $ 19,071 $ 18,063
Finance Lease, Interest Expense 5,395 4,664
Short-Term Lease, Cost 4,200 3,100
Operating Lease, Cost 76,642 76,494
Entergy Louisiana [Member]    
Finance Lease, Right-of-Use Asset, Amortization 5,820 5,755
Finance Lease, Interest Expense 1,207 1,068
Short-Term Lease, Cost 1,400 1,100
Operating Lease, Cost 19,875 19,770
Entergy Mississippi [Member]    
Finance Lease, Right-of-Use Asset, Amortization 2,726 2,604
Finance Lease, Interest Expense 1,153 1,116
Short-Term Lease, Cost 600 500
Operating Lease, Cost 9,696 9,482
Entergy New Orleans [Member]    
Finance Lease, Right-of-Use Asset, Amortization 653 1,240
Finance Lease, Interest Expense 151 264
Short-Term Lease, Cost 200 100
Operating Lease, Cost 2,094 2,234
Entergy Texas [Member]    
Finance Lease, Right-of-Use Asset, Amortization 2,376 2,104
Finance Lease, Interest Expense 484 399
Short-Term Lease, Cost 400 300
Operating Lease, Cost 8,396 7,977
Entergy Arkansas [Member]    
Finance Lease, Right-of-Use Asset, Amortization 5,834 4,675
Finance Lease, Interest Expense 1,714 990
Short-Term Lease, Cost 1,600 1,100
Operating Lease, Cost $ 19,633 $ 19,382