Business Segment Information Business Segment Information (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Palisades [Member] | Entergy Wholesale Commodities [Member]
Segment Reporting Information [Line Items]
Gain (Loss) on Disposition of Assets	$ 166			$ 166
Indian Point Energy Center | Entergy Wholesale Commodities [Member]
Segment Reporting Information [Line Items]
Gain (Loss) on Disposition of Assets					$ 340
Entergy Wholesale Commodities [Member]
Segment Reporting Information [Line Items]
Asset Write-Offs, Impairments, And Related Charges				1	345
Restructuring Charges		$ 0	$ 2	3	10
Employee Retention and Severances Expenses and Other Benefits-Related Costs [Member] | Entergy Wholesale Commodities [Member]
Segment Reporting Information [Line Items]
Restructuring Charges		$ 0	$ 2	$ 3	$ 9