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	Mar. 31, 2022	Dec. 31, 2021
Long-term Debt, Fair Value	$ 26,731,277	$ 27,061,171
Long-term Debt, Book Value	27,215,784	25,880,901
Entergy Arkansas [Member]
Long-term Debt, Fair Value	4,101,516	4,176,577
Long-term Debt, Book Value	4,163,602	3,958,862
Entergy Louisiana [Member]
Long-term Debt, Fair Value	11,959,123	11,492,650
Long-term Debt, Book Value	12,022,131	10,914,346
Entergy Mississippi [Member]
Long-term Debt, Fair Value	2,152,275	2,346,230
Long-term Debt, Book Value	2,180,197	2,179,989
Entergy New Orleans [Member]
Long-term Debt, Fair Value	775,566	765,538
Long-term Debt, Book Value	788,501	788,165
Entergy Texas [Member]
Long-term Debt, Fair Value	2,254,487	2,483,995
Long-term Debt, Book Value	2,325,371	2,354,148
System Energy [Member]
Long-term Debt, Fair Value	769,552	743,040
Long-term Debt, Book Value	$ 805,353	$ 741,296