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Retirement, Other Postretirement Benefits, And Defined Contribution Plans (Schedule of Expected Benefit Payments) (Details) $ in Thousands	Dec. 31, 2025 USD ($)
Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	$ 405,257
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	377,144
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	375,819
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	373,409
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	372,900
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	1,845,801
Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	22,798
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	8,738
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	10,507
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	8,250
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	8,575
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	40,642
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	64,582
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	63,069
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	61,732
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	59,968
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	59,569
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	298,101
Entergy Arkansas [Member] | Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	93,808
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	91,254
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	90,558
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	89,116
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	89,462
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	436,323
Entergy Arkansas [Member] | Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	538
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	104
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	197
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	164
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	157
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	893
Entergy Arkansas [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	11,587
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	11,331
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	11,203
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	11,189
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	11,156
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	56,327
Entergy Louisiana [Member] | Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	99,918
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	93,767
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	93,224
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	91,966
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	91,351
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	448,573
Entergy Louisiana [Member] | Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	191
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	176
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	163
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	160
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	142
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	891
Entergy Louisiana [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	14,140
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	13,710
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	13,257
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	12,947
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	12,772
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	63,275
Entergy Mississippi [Member] | Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	26,878
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	26,048
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	25,693
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	25,798
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	24,871
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	117,545
Entergy Mississippi [Member] | Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	344
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	875
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	673
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	508
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	1,465
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	284
Entergy Mississippi [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	3,187
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	3,132
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	3,156
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	3,105
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	3,073
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	15,314
Entergy New Orleans [Member] | Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	9,197
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	9,077
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	8,802
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	8,668
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	8,434
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	40,445
Entergy New Orleans [Member] | Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	95
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	304
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	246
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	198
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	662
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	61
Entergy New Orleans [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	1,610
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	1,509
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	1,400
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	1,322
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	1,270
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	5,779
Entergy Texas [Member] | Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	22,960
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	21,128
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	20,459
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	20,023
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	19,230
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	90,024
Entergy Texas [Member] | Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	390
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	364
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	339
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	313
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	287
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	1,100
Entergy Texas [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	3,915
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	3,746
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	3,563
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	3,413
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	3,399
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	15,729
System Energy [Member] | Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	25,290
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	23,750
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	22,987
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	23,243
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	22,668
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	110,793
System Energy [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	2,499
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	2,434
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	2,411
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	2,437
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	2,462
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	$ 12,685

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