Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Book Value And The Fair Value Of Long-Term Debt) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Long-term Debt, Fair Value	$ 22,233,532	$ 22,573,837
Long-term Debt, Book Value	26,183,400	25,932,549
Entergy Arkansas [Member]
Long-term Debt, Fair Value	3,910,973	3,538,930
Long-term Debt, Book Value	4,650,501	4,166,500
Entergy Louisiana [Member]
Long-term Debt, Fair Value	8,893,051	9,444,665
Long-term Debt, Book Value	10,399,014	10,698,922
Entergy Mississippi [Member]
Long-term Debt, Fair Value	1,935,895	1,987,154
Long-term Debt, Book Value	2,329,185	2,331,096
Entergy New Orleans [Member]
Long-term Debt, Fair Value	599,005	707,872
Long-term Debt, Book Value	685,002	775,632
Entergy Texas [Member]
Long-term Debt, Fair Value	2,702,065	2,485,705
Long-term Debt, Book Value	3,233,614	2,895,913
System Energy [Member]
Long-term Debt, Fair Value	677,274	702,473
Long-term Debt, Book Value	$ 745,247	$ 777,905