Stock-Based Compensation (Financial Information For Other Equity Plans) (Details) - Parent Company [Member] - Restricted Stock Awards [Member] - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Employee service share-based compensation, aggregate disclosures
Compensation expense included in Entergy's net income	$ 8.6	$ 7.6	$ 24.7	$ 22.7
Tax benefit recognized in Entergy's net income	3.3	2.9	9.5	8.8
Compensation cost capitalized as part of fixed assets and inventory	$ 1.8	$ 1.2	$ 4.9	$ 3.5

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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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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