Retirement, Other Postretirement Benefits, And Defined Contribution Plans (Schedule Of Amounts Recorded On The Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current liabilities	$ (61,240)	$ (71,612)
Non-current liabilities	(2,616,085)	(2,910,654)
Non-Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	131,900	144,700
Accumulated other comprehensive income (before taxes)	19,200	35,900
Entergy Arkansas [Member]
Non-current liabilities	(313,295)	(353,274)
Entergy Arkansas [Member] | Non-Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	2,519	3,825
Current liabilities	(198)	(376)
Non-current liabilities	(2,554)	(3,845)
Total funded status	(2,752)	(4,221)
Assets for Plan Benefits, Defined Benefit Plan	1,314	2,995
Accumulated other comprehensive income (before taxes)	0	0
Entergy Louisiana [Member]
Non-current liabilities	(643,171)	(748,384)
Entergy Louisiana [Member] | Non-Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	1,881	2,061
Current liabilities	(229)	(231)
Non-current liabilities	(1,652)	(1,830)
Total funded status	(1,881)	(2,061)
Assets for Plan Benefits, Defined Benefit Plan	79	166
Accumulated other comprehensive income (before taxes)	5	11
Entergy Mississippi [Member]
Non-current liabilities	(93,100)	(101,498)
Entergy Mississippi [Member] | Non-Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	2,427	2,250
Current liabilities	(128)	(135)
Non-current liabilities	(2,604)	(2,603)
Total funded status	(2,732)	(2,738)
Assets for Plan Benefits, Defined Benefit Plan	1,009	1,186
Accumulated other comprehensive income (before taxes)	0	0
Entergy New Orleans [Member]
Non-current liabilities	(5,626)	(20,755)
Entergy New Orleans [Member] | Non-Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	206	519
Current liabilities	(16)	(21)
Non-current liabilities	(191)	(562)
Total funded status	(207)	(583)
Liability, Defined Benefit Pension Plan	(579)	(140)
Accumulated other comprehensive income (before taxes)	0	0
Entergy Texas [Member]
Non-current liabilities	(4,834)	(17,853)
Entergy Texas [Member] | Non-Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	7,724	8,602
Current liabilities	(672)	(788)
Non-current liabilities	(7,280)	(8,125)
Total funded status	(7,952)	(8,913)
Assets for Plan Benefits, Defined Benefit Plan		133
Liability, Defined Benefit Pension Plan	(517)
Accumulated other comprehensive income (before taxes)	0	0
System Energy [Member]
Non-current liabilities	$ (98,639)	$ (121,874)