Retirement, Other Postretirement Benefits, And Defined Contribution Plans Contributions To Defined Contribution Plans (Details) - Defined Contribution Plans [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Entergy Arkansas [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 4,820	$ 4,515	$ 4,111
Entergy Louisiana [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	6,678	6,518	5,641
Entergy Mississippi [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	3,045	2,863	2,424
Entergy New Orleans [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	1,140	1,115	882
Entergy Texas [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 2,699	$ 2,596	$ 2,136