Business Segment Information Business Segment Information (Restructuring Costs) (Details) - Entergy Wholesale Commodities [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Restructuring Charges	$ 4	$ 13
Restructuring Reserve	41	171		$ 37	$ 159
Payments for Restructuring	0	1
Asset Write-Offs, Impairments, And Related Charges	1	3
Employee Retention and Severances Expenses and Other Benefits-Related Costs [Member]
Segment Reporting Information [Line Items]
Restructuring Charges	4	13
Restructuring Reserve	41	157		37	145
Payments for Restructuring	0	1
Employee Retention and Severances Expenses and Other Benefits-Related Costs [Member] | Subsequent Event [Member]
Segment Reporting Information [Line Items]
Restructuring Reserve			$ 5
Economic Development Costs [Member]
Segment Reporting Information [Line Items]
Restructuring Charges	0	0
Restructuring Reserve	0	14		$ 0	$ 14
Payments for Restructuring	$ 0	$ 0