Asset Retirement Obligations (Fair Values Of Decommissioning Trust Funds And Related Asset Retirement Obligation Regulatory Assets) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
ANO 1 and ANO 2 [Member]
Asset Retirement Obligations [Line Items]
Decommissioning Trust Fair Values	$ 710.9	$ 600.6
Regulatory Asset	219.1	204.0
River Bend [Member]
Asset Retirement Obligations [Line Items]
Decommissioning Trust Fair Values	573.7	477.4
Regulatory Liabilities	(28.7)	(1.7)
Waterford 3 [Member]
Asset Retirement Obligations [Line Items]
Decommissioning Trust Fair Values	347.3	287.4
Regulatory Asset	128.5	126.7
Grand Gulf [Member]
Asset Retirement Obligations [Line Items]
Decommissioning Trust Fair Values	603.9	490.6
Regulatory Asset	60.8	58.9
Entergy Wholesale Commodities [Member]
Asset Retirement Obligations [Line Items]
Decommissioning Trust Fair Values	$ 2,667.3	$ 2,334.1

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The fair value of investments held in a trust fund to pay for the costs of decontaminating and decommissioning facilities, whether such amount is presented as a separate caption or as a parenthetical disclosure on the balance sheet. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 410

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849

+ Details

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- Definition

The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 980

-SubTopic 340

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382

+ Details

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- Definition

The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 980

-SubTopic 405

-Section 25

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6500807&loc=d3e48068-110394

+ Details

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