Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Schedule of Long-Term Debt Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Long-Term Debt, Fair Value	$ 26,976,295	$ 25,181,802
Long-Term Debt	29,594,991	27,991,595
Entergy Arkansas [Member]
Long-Term Debt, Fair Value	4,538,510	4,546,643
Long-Term Debt	5,107,853	5,122,494
Entergy Louisiana [Member]
Long-Term Debt, Fair Value	9,371,023	8,751,266
Long-Term Debt	10,405,643	9,866,453
Entergy Mississippi [Member]
Long-Term Debt, Fair Value	2,712,650	2,116,246
Long-Term Debt	3,020,618	2,427,073
Entergy New Orleans [Member]
Long-Term Debt, Fair Value	697,047	697,466
Long-Term Debt	737,355	735,467
Entergy Texas [Member]
Long-Term Debt, Fair Value	3,723,403	3,176,230
Long-Term Debt	4,047,376	3,552,443
System Energy [Member]
Long-Term Debt, Fair Value	1,063,300	1,063,946
Long-Term Debt	$ 1,076,797	$ 1,089,736