Leases Purchase Power Agreement Minimum Lease Payments (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Current Year, Operating Leases	$ 90,010
Year Two, Operating Leases	77,060
Year Three, Operating Leases	62,103
Year Four, Operating Leases	49,630
Year Five, Operating Leases	47,527
Years thereafter, Operating Leases	95,530
Minimum lease payments, Operating Leases	421,860
Purchased Power Agreement [Domain]
Current Year, Operating Leases	28,450
Year Two, Operating Leases	29,104
Year Three, Operating Leases	29,772
Year Four, Operating Leases	30,458
Year Five, Operating Leases	31,158
Years thereafter, Operating Leases	74,664
Minimum lease payments, Operating Leases	223,606
Entergy Gulf States Louisiana [Member]
Current Year, Operating Leases	12,643
Year Two, Operating Leases	10,880
Year Three, Operating Leases	10,035
Year Four, Operating Leases	9,100
Year Five, Operating Leases	10,795
Years thereafter, Operating Leases	26,671
Minimum lease payments, Operating Leases	80,124
Entergy Louisiana [Member]
Current Year, Operating Leases	11,006
Year Two, Operating Leases	9,695
Year Three, Operating Leases	7,784
Year Four, Operating Leases	6,343
Year Five, Operating Leases	5,003
Years thereafter, Operating Leases	5,458
Minimum lease payments, Operating Leases	45,289
Entergy Texas [Member]
Current Year, Operating Leases	5,837
Year Two, Operating Leases	5,111
Year Three, Operating Leases	4,239
Year Four, Operating Leases	3,707
Year Five, Operating Leases	2,719
Years thereafter, Operating Leases	2,981
Minimum lease payments, Operating Leases	24,594
Entergy Texas [Member] \| Purchased Power Agreement [Domain]
Current Year, Operating Leases	28,450
Year Two, Operating Leases	29,104
Year Three, Operating Leases	29,772
Year Four, Operating Leases	30,458
Year Five, Operating Leases	31,158
Years thereafter, Operating Leases	74,664
Minimum lease payments, Operating Leases	$ 223,606

Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 10

-Section 55

-Paragraph 40

-Subparagraph (Note 3)

-URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717

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Amount of required minimum rental payments maturing in the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the forth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing after the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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