Stock-Based Compensation (Financial Information For Other Equity Plans) (Details) (Parent Company [Member], Restricted Stock Awards [Member], USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Parent Company [Member] \| Restricted Stock Awards [Member]
Employee service share-based compensation, aggregate disclosures
Compensation expense included in Entergy's net income	$ 5.7	$ 3.7	$ 17.5	$ 11.0
Tax benefit recognized in Entergy's net income	2.2	1.4	6.8	4.2
Compensation cost capitalized as part of fixed assets and inventory	$ 0.9	$ 0.6	$ 2.7	$ 1.9

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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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.

+ References

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

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