Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Schedule of Long-Term Debt Instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Long-Term Debt, Fair Value	$ 27,046,970	$ 25,181,802
Long-Term Debt	29,033,259	27,991,595
Entergy Arkansas [Member]
Long-Term Debt, Fair Value	4,964,743	4,546,643
Long-Term Debt	5,431,589	5,122,494
Entergy Louisiana [Member]
Long-Term Debt, Fair Value	9,582,488	8,751,266
Long-Term Debt	10,390,778	9,866,453
Entergy Mississippi [Member]
Long-Term Debt, Fair Value	2,782,423	2,116,246
Long-Term Debt	3,020,984	2,427,073
Entergy New Orleans [Member]
Long-Term Debt, Fair Value	623,753	697,466
Long-Term Debt	657,870	735,467
Entergy Texas [Member]
Long-Term Debt, Fair Value	3,791,754	3,176,230
Long-Term Debt	4,039,013	3,552,443
System Energy [Member]
Long-Term Debt, Fair Value	1,106,257	1,063,946
Long-Term Debt	$ 1,090,762	$ 1,089,736