Retirement, Other Postretirement Benefits, And Defined Contribution Plans (Schedule Of Projected Benefit Obligations) (Details) - Non-Qualified Pension Plans [Member] - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Projected Benefit Obligation	$ 162,300	$ 169,300
Entergy Arkansas [Member]
Projected Benefit Obligation	4,221	3,897
Entergy Louisiana [Member]
Projected Benefit Obligation	2,061	2,134
Entergy Mississippi [Member]
Projected Benefit Obligation	2,737	2,296
Entergy New Orleans [Member]
Projected Benefit Obligation	583	514
Entergy Texas [Member]
Projected Benefit Obligation	$ 8,913	$ 8,665

1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Projected Benefit Obligation
-URI http://asc.fasb.org/extlink&oid=6522206

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accumulated Postretirement Benefit Obligation
-URI http://asc.fasb.org/extlink&oid=6503904

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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