Business Segment Information Business Segment Information (Restructuring Costs) (Details) - Entergy Wholesale Commodities [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Restructuring Charges	$ 0	$ 2	$ 3	$ 10
Restructuring Reserve	0	35	0	35	$ 40	$ 37	$ 33	$ 159
Payments for Restructuring	40	0	40	134
Asset Write-Offs, Impairments, And Related Charges			1	345
Employee Retention and Severances Expenses and Other Benefits-Related Costs [Member]
Segment Reporting Information [Line Items]
Restructuring Charges	0	2	3	9
Restructuring Reserve	0	35	0	35	40	37	33	145
Payments for Restructuring	40	0	40	119
Economic Development Costs [Member]
Segment Reporting Information [Line Items]
Restructuring Charges	0	0	0	1
Restructuring Reserve	0	0	0	0	$ 0	$ 0	$ 0	$ 14
Payments for Restructuring	$ 0	$ 0	$ 0	$ 15