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Stock-Based Compensation (Financial Information For Other Equity Plans) (Details) - Other Equity Awards [Member] - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Employee service share-based compensation, aggregate disclosures |  |  |  |
Compensation expense included in Entergy's net income | $ 10.1 | $ 10.6 | $ 17.8 | $ 22.0
Tax benefit recognized in Entergy's net income | 2.6 | 2.7 | 4.6 | 5.6
Compensation cost capitalized as part of fixed assets and inventory | $ 4.4 | $ 4.3 | $ 7.6 | $ 8.7

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