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Retirement And Other Postretirement Benefits (Reclassification Out Of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Defined Benefit Plan Disclosure [Line Items] |  |
Amortization of prior service cost | $ 5,426 | $ 6,562
Amortization of loss | (24,952) | (21,571)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax | (1,616) |
Total | (21,142) | (15,009)
Entergy Louisiana [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Amortization of prior service cost | 1,934 | 1,934
Amortization of loss | (1,257) | (1,332)
Total | 677 | 602
Pension Plans Defined Benefit [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Amortization of prior service cost | (99) | (65)
Amortization of loss | (21,957) | (18,450)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax | 0 |
Total | (22,056) | (18,515)
Pension Plans Defined Benefit [Member] | Entergy Louisiana [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Amortization of prior service cost | 0 | 0
Amortization of loss | (867) | (865)
Total | (867) | (865)
Other Postretirement [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Amortization of prior service cost | 5,595 | 6,717
Amortization of loss | (1,932) | (2,202)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax | 0 |
Total | 3,663 | 4,515
Other Postretirement [Member] | Entergy Louisiana [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Amortization of prior service cost | 1,934 | 1,934
Amortization of loss | (388) | (465)
Total | 1,546 | 1,469
Non Qualified Pension Plans [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Amortization of prior service cost | (70) | (90)
Amortization of loss | (1,063) | (919)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax | (1,616) |
Total | (2,749) | (1,009)
Non Qualified Pension Plans [Member] | Entergy Louisiana [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Amortization of prior service cost | 0 | 0
Amortization of loss | (2) | (2)
Total | $ (2) | $ (2)

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- Definition The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation, pre tax and including amounts capitalized. + References No definition available. + Details
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- Definition Amount of net gain (loss) recognized in net periodic benefit cost as a result of an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include, but are not limited to, lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contracts to cover vested benefits, pre tax and including amounts capitalized + References No definition available. + Details
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