Stock-Based Compensation (Financial Information For Other Equity Plans) (Details) - Other Equity Awards [Member] - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Employee service share-based compensation, aggregate disclosures
Compensation expense included in Entergy's net income	$ 8.4	$ 8.5	$ 25.6	$ 26.0
Tax benefit recognized in Entergy's net income	2.1	2.2	6.5	6.6
Compensation cost capitalized as part of fixed assets and inventory	$ 3.0	$ 2.5	$ 8.8	$ 7.3

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Represents the compensation cost capitalized during the period arising from equity-based compensation arrangements (for example, shares of stock, units, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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