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Business Combinations and Asset Acquisitions (Details) | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2022 USD ($) | May 31, 2022 USD ($) MW | Apr. 30, 2020 USD ($) | Jul. 31, 2018 | Jun. 30, 2022 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Jun. 28, 2022 USD ($) | Dec. 31, 2021 USD ($)
Business Combination and Asset Acquisition [Abstract] |  |  |  |  |  |  |  |  |
Payments to Acquire Productive Assets |  |  |  |  |  | $ 105,149,000 | $ 36,534,000 |  |
Public Utilities, Property, Plant and Equipment, Net | $ 41,213,697,000 |  |  |  | $ 41,213,697,000 | 41,213,697,000 |  |  | $ 42,244,160,000
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Public Utilities, Property, Plant and Equipment, Net | 41,213,697,000 |  |  |  | 41,213,697,000 | 41,213,697,000 |  |  | 42,244,160,000
Entergy Mississippi [Member] |  |  |  |  |  |  |  |  |
Business Combination and Asset Acquisition [Abstract] |  |  |  |  |  |  |  |  |
Payments to Acquire Productive Assets |  |  |  |  |  | 105,149,000 | $ 0 |  |
Public Utilities, Property, Plant and Equipment, Net | 4,786,175,000 |  |  |  | 4,786,175,000 | 4,786,175,000 |  |  | 4,580,971,000
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Public Utilities, Property, Plant and Equipment, Net | 4,786,175,000 |  |  |  | 4,786,175,000 | 4,786,175,000 |  |  | $ 4,580,971,000
Sunflower Solar facility | Entergy Mississippi [Member] |  |  |  |  |  |  |  |  |
Business Combination and Asset Acquisition [Abstract] |  |  |  |  |  |  |  |  |
Capacity Of Power Plant Unit | MW |  | 100 |  |  |  |  |  |  |
Conditional cap on level of recoverable costs |  |  | $ 136,000,000 |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Conditional cap on level of recoverable costs |  |  | $ 136,000,000 |  |  |  |  |  |
Capacity Of Power Plant Unit | MW |  | 100 |  |  |  |  |  |  |
Sunflower Solar facility | Entergy Mississippi [Member] | MS Sunflower Partnership, LLC |  |  |  |  |  |  |  |  |
Business Combination and Asset Acquisition [Abstract] |  |  |  |  |  |  |  |  |
Payments to Acquire Productive Assets; Initial Payment |  | $ 105,000,000 |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Payments to Acquire Productive Assets; Initial Payment |  | $ 105,000,000 |  |  |  |  |  |  |
Palisades [Member] | Entergy Wholesale Commodities [Member] |  |  |  |  |  |  |  |  |
Business Combination and Asset Acquisition [Abstract] |  |  |  |  |  |  |  |  |
Percentage of Undivided Ownership Interest |  |  |  | 100.00% |  |  |  |  |
Proceeds from Divestiture of Businesses | 1,000 |  |  |  |  |  |  |  |
Gain (Loss) on Disposition of Assets | 166,000,000 |  |  |  | 166,000,000 | 166,000,000 |  |  |
Gain (Loss) on Disposition of Assets (Net-Of-Tax) | 130,000,000 |  |  |  |  |  |  |  |
Decommissioning Fund Investments, Fair Value |  |  |  |  |  |  |  | $ 552,000,000 |
Asset Retirement Obligation |  |  |  |  |  |  |  | 708,000,000 |
Public Utilities, Property, Plant and Equipment, Net |  |  |  |  |  |  |  | 0 |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from Divestiture of Businesses | 1,000 |  |  |  |  |  |  |  |
Gain (Loss) on Disposition of Assets | 166,000,000 |  |  |  | $ 166,000,000 | $ 166,000,000 |  |  |
Decommissioning Fund Investments, Fair Value |  |  |  |  |  |  |  | 552,000,000 |
Public Utilities, Property, Plant and Equipment, Net |  |  |  |  |  |  |  | 0 |
Percentage of Undivided Ownership Interest |  |  |  | 100.00% |  |  |  |  |
Gain (Loss) on Disposition of Assets (Net-Of-Tax) | $ 130,000,000 |  |  |  |  |  |  |  |
Asset Retirement Obligation |  |  |  |  |  |  |  | $ 708,000,000 |

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