Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flow hedges net unrealized gain (loss), tax expense (benefit)	$ (14,776)	$ 28,516	$ 5,830
Pension and other postretirement liabilities, tax expense	5,600	(6,539)	30,299
Net unrealized investment gains, tax expense	17,586	14,023	6,393
Entergy Louisiana [Member]
Pension and other postretirement liabilities, tax expense	$ (83)	$ 3,781	$ 17,743