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Business Segment Information Business Segment Information (Narrative) (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Palisades [Member] | Entergy Wholesale Commodities [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Gain (Loss) on Disposition of Assets | $ 166 | $ 166 |  | $ 166 |
Indian Point Energy Center | Entergy Wholesale Commodities [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Gain (Loss) on Disposition of Assets |  |  | $ 340 |  | $ 340
Entergy Wholesale Commodities [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Asset Write-Offs, Impairments, And Related Charges |  | $ 1 | $ 342 | 1 | 345
Restructuring Charges |  |  |  | 3 | 8
Employee Retention and Severances Expenses and Other Benefits-Related Costs [Member] | Entergy Wholesale Commodities [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Restructuring Charges |  |  |  | $ 3 | $ 7

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