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Consolidated Balance Sheets - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
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Cash and Cash Equivalents [Abstract] |  |
Cash | $ 69,157 | $ 48,424
Cash Equivalents, at Carrying Value | 1,444,253 | 811,279
Cash and Cash Equivalents, at Carrying Value, Total | 1,513,410 | 859,703
Accounts Receivable [Abstract] |  |
Accounts Receivable, before Allowance for Credit Loss, Current | 741,254 | 681,504
Accounts Receivable, Allowance for Credit Loss, Current | (17,638) | (17,919)
Other Receivables | 154,986 | 204,868
Unbilled Receivables, Current | 460,320 | 521,946
Accounts and Other Receivables, Net, Current | 1,338,922 | 1,390,399
Deferred Fuel Cost | 125,490 | 0
Energy Related Inventory | 164,134 | 166,408
Public Utilities, Inventory | 1,539,551 | 1,631,056
Prepaid Expense and Other Assets, Current | 316,659 | 233,212
Deferred Nuclear Refueling Outage Costs | 98,324 | 99,885
Assets, Current, Total | 5,112,388 | 4,396,237
Assets, Noncurrent [Abstract] |  |
Decommissioning Fund Investments | 5,446,731 | 5,562,575
Property, Plant and Equipment, Net | 467,020 | 423,764
Asset Recovery Damaged Property Costs, Noncurrent | 300,269 | 340,460
Other Long-Term Investments | 82,896 | 82,344
Long-Term Investments, Total | 6,296,916 | 6,409,143
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |
Public Utilities, Property, Plant and Equipment, Electric | 71,237,319 | 70,818,667
Public Utilities, Property, Plant and Equipment, Natural Gas | 77,529 | 77,054
Public Utilities, Property, Plant and Equipment, Construction Work in Progress | 4,422,150 | 3,206,308
Public Utilities, Property, Plant and Equipment, Fuel | 728,969 | 765,661
Public Utilities, Property, Plant and Equipment, Plant in Service, Total | 76,465,967 | 74,867,690
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation | 27,792,637 | 27,444,740
Public Utilities, Property, Plant and Equipment, Net, Total | 48,673,330 | 47,422,950
Regulatory Asset [Abstract] |  |
Regulatory Asset, Noncurrent | 5,101,032 | 5,255,509
Deferred Fuel Cost, Noncurrent | 172,201 | 172,201
Goodwill | 367,696 | 367,625
Deferred Income Tax Assets, Net | 25,759 | 18,986
Other Assets, Noncurrent | 403,872 | 284,584
Deferred Costs and Other Assets | 6,537,775 | 6,561,702
Assets, Total | 66,620,409 | 64,790,032
Liabilities, Current [Abstract] |  |
Long-Term Debt, Current Maturities | 1,330,112 | 1,378,090
Short-Term Debt | 1,329,985 | 927,291
Accounts Payable, Current | 1,809,891 | 1,929,162
Contract with Customer, Refund Liability, Current | 468,584 | 462,436
Taxes Payable, Current | 360,233 | 457,093
Interest Payable, Current | 271,149 | 259,554
Deferred Fuel Costs Current Liabilities | 85,110 | 237,146
Liability, Defined Benefit Plan, Current | 63,156 | 64,854
Other Liabilities, Current | 482,035 | 395,411
Liabilities, Current, Total | 6,200,255 | 6,111,037
Liabilities, Noncurrent [Abstract] |  |
Deferred Income Taxes and Other Tax Liabilities, Noncurrent | 4,586,943 | 4,467,748
Accumulated Deferred Investment Tax Credit | 191,997 | 194,146
Regulatory Liability For Income Taxes - Net | 1,148,896 | 1,168,078
Regulatory Liability, Noncurrent | 3,425,277 | 3,609,463
Asset Retirement Obligations, Noncurrent | 4,765,021 | 4,713,426
Loss Contingency Accrual | 471,824 | 506,063
Liability, Defined Benefit Plan, Noncurrent | 215,740 | 254,704
Long-Term Debt, Excluding Current Maturities | 28,264,879 | 26,613,505
Deferred Credits and Other Liabilities | 1,151,265 | 1,112,881
Liabilities, Noncurrent, Total | 44,918,344 | 43,274,601
Commitments and Contingencies |  |
Temporary Equity, Carrying Amount, Attributable to Parent | 219,410 | 219,410
Common Shareholders Equity [Abstract] |  |
Preferred Stock, Value, Issued | 0 | 0
Common Stock, Value, Issued | 5,620 | 5,620
Additional Paid in Capital, Common Stock | 7,792,748 | 7,833,525
Retained Earnings (Accumulated Deficit) | 12,116,826 | 12,014,315
Accumulated Other Comprehensive Income (Loss), Net of Tax | 39,040 | 42,769
Treasury Stock, Value | 4,768,923 | 4,812,321
Equity, Attributable to Parent, Total | 15,185,311 | 15,083,908
Equity, Attributable to Noncontrolling Interest | 97,089 | 101,076
Equity, Including Portion Attributable to Noncontrolling Interest, Total | 15,282,400 | 15,184,984
Liabilities and Equity, Total | 66,620,409 | 64,790,032
Customer advances for construction, noncurrent | 696,502 | 634,587
Disposal Group, Including Discontinued Operation, Assets, Current | 15,898 | 15,574
Disposal Group, Including Discontinued Operation, Assets, Noncurrent | 467,215 | 462,797
Entergy Arkansas [Member] |  |
Cash and Cash Equivalents [Abstract] |  |
Cash | 154 | 1,306
Cash Equivalents, at Carrying Value | 54,906 | 3,441
Cash and Cash Equivalents, at Carrying Value, Total | 55,060 | 4,747
Accounts Receivable [Abstract] |  |
Accounts Receivable, Allowance for Credit Loss, Current | (4,947) | (4,672)
Other Receivables | 57,008 | 70,927
Unbilled Receivables, Current | 102,383 | 125,824
Accounts and Other Receivables, Net, Current | 355,449 | 366,725
Energy Related Inventory | 56,573 | 49,937
Public Utilities, Inventory | 394,613 | 384,238
Prepaid Expense and Other Assets, Current | 45,215 | 41,404
Deferred Nuclear Refueling Outage Costs | 37,611 | 48,879
Assets, Current, Total | 944,521 | 895,930
Assets, Noncurrent [Abstract] |  |
Decommissioning Fund Investments | 1,571,159 | 1,604,428
Other Long-Term Investments | 796 | 797
Long-Term Investments, Total | 1,571,955 | 1,605,225
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |
Public Utilities, Property, Plant and Equipment, Electric | 16,407,844 | 16,371,182
Public Utilities, Property, Plant and Equipment, Construction Work in Progress | 434,808 | 320,447
Public Utilities, Property, Plant and Equipment, Fuel | 200,749 | 257,533
Public Utilities, Property, Plant and Equipment, Plant in Service, Total | 17,043,401 | 16,949,162
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation | 6,367,812 | 6,275,150
Public Utilities, Property, Plant and Equipment, Net, Total | 10,675,589 | 10,674,012
Regulatory Asset [Abstract] |  |
Regulatory Asset, Noncurrent | 1,689,961 | 1,700,110
Other Assets, Noncurrent | 210,061 | 198,706
Deferred Costs and Other Assets | 1,900,022 | 1,898,816
Assets, Total | 15,092,087 | 15,073,983
Liabilities, Current [Abstract] |  |
Contract with Customer, Refund Liability, Current | 131,951 | 129,267
Taxes Payable, Current | 91,845 | 93,215
Interest Payable, Current | 64,324 | 38,377
Deferred Fuel Costs Current Liabilities | 2,910 | 45,158
Other Liabilities, Current | 54,834 | 55,313
Liabilities, Current, Total | 605,446 | 656,507
Liabilities, Noncurrent [Abstract] |  |
Deferred Income Taxes and Other Tax Liabilities, Noncurrent | 1,529,054 | 1,489,169
Accumulated Deferred Investment Tax Credit | 25,769 | 26,069
Regulatory Liability For Income Taxes - Net | 420,275 | 417,561
Regulatory Liability, Noncurrent | 780,511 | 831,165
Asset Retirement Obligations, Noncurrent | 1,716,205 | 1,691,583
Loss Contingency Accrual | 80,920 | 76,479
Long-Term Debt, Excluding Current Maturities | 5,107,853 | 5,122,494
Deferred Credits and Other Liabilities | 275,707 | 298,951
Liabilities, Noncurrent, Total | 9,936,294 | 9,953,471
Commitments and Contingencies |  |
Common Shareholders Equity [Abstract] |  |
Members' Equity | 4,536,551 | 4,448,837
Equity, Attributable to Noncontrolling Interest | 13,796 | 15,168
Equity, Including Portion Attributable to Noncontrolling Interest, Total | 4,550,347 | 4,464,005
Liabilities and Equity, Total | 15,092,087 | 15,073,983
Entergy Arkansas [Member] | Affiliated Entity [Member] |  |
Accounts Receivable [Abstract] |  |
Accounts Receivable, before Allowance for Credit Loss, Current | 47,076 | 35,412
Liabilities, Current [Abstract] |  |
Accounts Payable, Current | 39,988 | 85,137
Entergy Arkansas [Member] | Nonrelated Party [Member] |  |
Accounts Receivable [Abstract] |  |
Accounts Receivable, before Allowance for Credit Loss, Current | 153,929 | 139,234
Liabilities, Current [Abstract] |  |
Accounts Payable, Current | 219,594 | 210,040
Entergy Louisiana [Member] |  |
Cash and Cash Equivalents [Abstract] |  |
Cash | 211 | 327
Cash Equivalents, at Carrying Value | 392,034 | 326,775
Cash and Cash Equivalents, at Carrying Value, Total | 392,245 | 327,102
Accounts Receivable [Abstract] |  |
Accounts Receivable, Allowance for Credit Loss, Current | (3,148) | (3,036)
Other Receivables | 40,755 | 39,056
Unbilled Receivables, Current | 195,155 | 213,026
Accounts and Other Receivables, Net, Current | 716,246 | 646,190
Deferred Fuel Cost | 113,571 | 0
Energy Related Inventory | 46,957 | 49,515
Public Utilities, Inventory | 680,242 | 782,459
Prepaid Expense and Other Assets, Current | 181,405 | 84,236
Deferred Nuclear Refueling Outage Costs | 44,786 | 31,121
Prepaid Taxes | 30,081 | 0
Assets, Current, Total | 2,210,213 | 1,923,097
Assets, Noncurrent [Abstract] |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 4,168,974 | 4,256,997
Decommissioning Fund Investments | 2,378,235 | 2,429,088
Property, Plant and Equipment, Net | 453,908 | 410,611
Asset Recovery Damaged Property Costs, Noncurrent | 225,990 | 256,718
Other Long-Term Investments | 9,831 | 9,749
Long-Term Investments, Total | 7,236,938 | 7,363,163
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |
Public Utilities, Property, Plant and Equipment, Electric | 29,010,385 | 28,736,547
Public Utilities, Property, Plant and Equipment, Natural Gas | 34,133 | 33,775
Public Utilities, Property, Plant and Equipment, Construction Work in Progress | 1,217,409 | 761,090
Public Utilities, Property, Plant and Equipment, Fuel | 350,069 | 288,084
Public Utilities, Property, Plant and Equipment, Plant in Service, Total | 30,611,996 | 29,819,496
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation | 10,894,148 | 10,794,817
Public Utilities, Property, Plant and Equipment, Net, Total | 19,717,848 | 19,024,679
Regulatory Asset [Abstract] |  |
Regulatory Asset, Noncurrent | 1,572,870 | 1,637,967
Deferred Fuel Cost, Noncurrent | 168,122 | 168,122
Other Assets, Noncurrent | 76,176 | 57,853
Deferred Costs and Other Assets | 1,993,747 | 2,037,611
Assets, Total | 31,158,746 | 30,348,550
Liabilities, Current [Abstract] |  |
Long-Term Debt, Current Maturities | 250,000 | 300,000
Contract with Customer, Refund Liability, Current | 170,677 | 169,544
Taxes Payable, Current | 0 | 29,002
Interest Payable, Current | 72,935 | 120,186
Deferred Fuel Costs Current Liabilities | 0 | 5,421
Other Liabilities, Current | 92,939 | 96,426
Liabilities, Current, Total | 1,471,597 | 1,514,016
Liabilities, Noncurrent [Abstract] |  |
Deferred Income Taxes and Other Tax Liabilities, Noncurrent | 2,649,356 | 2,477,954
Accumulated Deferred Investment Tax Credit | 87,553 | 88,679
Regulatory Liability For Income Taxes - Net | 343,434 | 355,432
Regulatory Liability, Noncurrent | 1,602,433 | 1,692,547
Asset Retirement Obligations, Noncurrent | 1,861,362 | 1,842,855
Loss Contingency Accrual | 253,799 | 279,623
Liability, Defined Benefit Plan, Noncurrent | 155,012 | 160,577
Long-Term Debt, Excluding Current Maturities | 10,155,643 | 9,566,453
Deferred Credits and Other Liabilities | 481,753 | 479,178
Liabilities, Noncurrent, Total | 17,871,679 | 17,235,140
Commitments and Contingencies |  |
Common Shareholders Equity [Abstract] |  |
Members' Equity | 11,720,213 | 11,503,030
Equity, Attributable to Noncontrolling Interest | 42,570 | 42,706
Accumulated Other Comprehensive Income (Loss), Net of Tax | 52,687 | 53,658
Equity, Including Portion Attributable to Noncontrolling Interest, Total | 11,815,470 | 11,599,394
Liabilities and Equity, Total | 31,158,746 | 30,348,550
Customer Advances, Current Liabilities | 150,967 | 151,662
Customer advances for construction, noncurrent | 281,334 | 291,842
Disposal Group, Including Discontinued Operation, Assets, Current | 4,680 | 2,474
Disposal Group, Including Discontinued Operation, Assets, Noncurrent | 176,579 | 173,669
Entergy Louisiana [Member] | Affiliated Entity [Member] |  |
Accounts Receivable [Abstract] |  |
Accounts Receivable, before Allowance for Credit Loss, Current | 153,893 | 103,055
Liabilities, Current [Abstract] |  |
Accounts Payable, Current | 64,963 | 108,688
Entergy Louisiana [Member] | Nonrelated Party [Member] |  |
Accounts Receivable [Abstract] |  |
Accounts Receivable, before Allowance for Credit Loss, Current | 329,591 | 294,089
Liabilities, Current [Abstract] |  |
Accounts Payable, Current | 669,116 | 533,087
Entergy Mississippi [Member] |  |
Cash and Cash Equivalents [Abstract] |  |
Cash | 141 | 184
Cash Equivalents, at Carrying Value | 598,016 | 155,509
Cash and Cash Equivalents, at Carrying Value, Total | 598,157 | 155,693
Accounts Receivable [Abstract] |  |
Accounts Receivable, Allowance for Credit Loss, Current | (2,074) | (2,172)
Other Receivables | 12,121 | 25,148
Unbilled Receivables, Current | 66,051 | 75,740
Accounts and Other Receivables, Net, Current | 301,695 | 220,234
Energy Related Inventory | 12,821 | 14,963
Public Utilities, Inventory | 113,838 | 113,256
Prepaid Expense and Other Assets, Current | 51,825 | 19,764
Assets, Current, Total | 1,078,336 | 523,910
Assets, Noncurrent [Abstract] |  |
Property, Plant and Equipment, Net | 4,478 | 4,482
Other Long-Term Investments | 920 | 880
Long-Term Investments, Total | 5,398 | 5,362
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |
Public Utilities, Property, Plant and Equipment, Electric | 7,916,942 | 7,860,409
Public Utilities, Property, Plant and Equipment, Construction Work in Progress | 739,110 | 487,273
Public Utilities, Property, Plant and Equipment, Plant in Service, Total | 8,656,052 | 8,347,682
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation | 2,551,210 | 2,511,091
Public Utilities, Property, Plant and Equipment, Net, Total | 6,104,842 | 5,836,591
Regulatory Asset [Abstract] |  |
Regulatory Asset, Noncurrent | 487,430 | 525,847
Other Assets, Noncurrent | 104,509 | 97,260
Deferred Costs and Other Assets | 591,939 | 623,107
Assets, Total | 7,780,515 | 6,988,970
Liabilities, Current [Abstract] |  |
Contract with Customer, Refund Liability, Current | 96,819 | 94,009
Taxes Payable, Current | 133,493 | 179,024
Interest Payable, Current | 37,174 | 20,667
Deferred Fuel Costs Current Liabilities | 79,953 | 126,316
Other Liabilities, Current | 19,493 | 20,720
Liabilities, Current, Total | 775,420 | 782,578
Liabilities, Noncurrent [Abstract] |  |
Deferred Income Taxes and Other Tax Liabilities, Noncurrent | 831,951 | 870,116
Accumulated Deferred Investment Tax Credit | 13,340 | 13,446
Regulatory Liability For Income Taxes - Net | 178,278 | 180,851
Regulatory Liability, Noncurrent | 73,151 | 59,544
Asset Retirement Obligations, Noncurrent | 25,460 | 25,110
Loss Contingency Accrual | 44,789 | 47,200
Long-Term Debt, Excluding Current Maturities | 3,020,618 | 2,427,073
Deferred Credits and Other Liabilities | 87,126 | 61,446
Liabilities, Noncurrent, Total | 4,486,741 | 3,797,404
Commitments and Contingencies |  |
Common Shareholders Equity [Abstract] |  |
Members' Equity | 2,512,631 | 2,400,786
Equity, Attributable to Noncontrolling Interest | 5,723 | 8,202
Equity, Including Portion Attributable to Noncontrolling Interest, Total | 2,518,354 | 2,408,988
Liabilities and Equity, Total | 7,780,515 | 6,988,970
Customer Advances, Current Liabilities | 106,494 | 0
Customer advances for construction, noncurrent | 212,028 | 112,618
Entergy Mississippi [Member] | Affiliated Entity [Member] |  |
Accounts Receivable [Abstract] |  |
Accounts Receivable, before Allowance for Credit Loss, Current | 116,538 | 23,909
Liabilities, Current [Abstract] |  |
Accounts Payable, Current | 53,243 | 58,087
Entergy Mississippi [Member] | Nonrelated Party [Member] |  |
Accounts Receivable [Abstract] |  |
Accounts Receivable, before Allowance for Credit Loss, Current | 109,059 | 97,609
Liabilities, Current [Abstract] |  |
Accounts Payable, Current | 248,751 | 283,755
Entergy New Orleans [Member] |  |
Cash and Cash Equivalents [Abstract] |  |
Cash | 34 | 374
Cash Equivalents, at Carrying Value | 13,892 | 31,403
Cash and Cash Equivalents, at Carrying Value, Total | 13,926 | 31,777
Other Restricted Assets, Current | 913 | 1,611
Accounts Receivable [Abstract] |  |
Accounts Receivable, Allowance for Credit Loss, Current | (6,343) | (6,735)
Other Receivables | 3,733 | 9,467
Unbilled Receivables, Current | 27,199 | 33,296
Accounts and Other Receivables, Net, Current | 96,917 | 107,603
Deferred Fuel Cost | 11,918 | 0
Energy Related Inventory | 1,251 | 320
Public Utilities, Inventory | 28,244 | 25,516
Prepaid Expense and Other Assets, Current | 19,834 | 12,128
Assets, Current, Total | 184,221 | 192,055
Assets, Noncurrent [Abstract] |  |
Asset Recovery Damaged Property Costs, Noncurrent | 74,279 | 83,742
Other Long-Term Investments | 832 | 832
Long-Term Investments, Total | 75,111 | 84,574
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |
Public Utilities, Property, Plant and Equipment, Electric | 2,156,506 | 2,160,165
Public Utilities, Property, Plant and Equipment, Natural Gas | 43,396 | 43,279
Public Utilities, Property, Plant and Equipment, Construction Work in Progress | 36,501 | 18,269
Public Utilities, Property, Plant and Equipment, Plant in Service, Total | 2,236,403 | 2,221,713
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation | 778,749 | 768,305
Public Utilities, Property, Plant and Equipment, Net, Total | 1,457,654 | 1,453,408
Regulatory Asset [Abstract] |  |
Regulatory Asset, Noncurrent | 127,473 | 133,261
Deferred Fuel Cost, Noncurrent | 4,080 | 4,080
Other Assets, Noncurrent | 74,782 | 71,037
Deferred Costs and Other Assets | 492,652 | 493,116
Assets, Total | 2,209,638 | 2,223,153
Liabilities, Current [Abstract] |  |
Long-Term Debt, Current Maturities | 80,000 | 78,000
Contract with Customer, Refund Liability, Current | 28,905 | 28,834
Taxes Payable, Current | 43,909 | 8,786
Interest Payable, Current | 11,107 | 8,671
Deferred Fuel Costs Current Liabilities | 0 | 980
Other Liabilities, Current | 14,096 | 14,427
Liabilities, Current, Total | 258,819 | 230,067
Liabilities, Noncurrent [Abstract] |  |
Deferred Income Taxes and Other Tax Liabilities, Noncurrent | 170,511 | 201,541
Accumulated Deferred Investment Tax Credit | 15,591 | 15,617
Regulatory Liability For Income Taxes - Net | 14,934 | 15,000
Regulatory Liability, Noncurrent | 248,372 | 260,312
Loss Contingency Accrual | 79,954 | 90,293
Long-Term Debt, Excluding Current Maturities | 650,351 | 650,463
Deferred Credits and Other Liabilities | 55,542 | 56,395
Liabilities, Noncurrent, Total | 1,241,119 | 1,295,485
Commitments and Contingencies |  |
Common Shareholders Equity [Abstract] |  |
Members' Equity | 709,700 | 697,601
Equity, Including Portion Attributable to Noncontrolling Interest, Total | 709,700 | 697,601
Liabilities and Equity, Total | 2,209,638 | 2,223,153
Disposal Group, Including Discontinued Operation, Assets, Current | 11,218 | 13,100
Disposal Group, Including Discontinued Operation, Assets, Noncurrent | 286,317 | 284,738
Entergy New Orleans [Member] | Affiliated Entity [Member] |  |
Accounts Receivable [Abstract] |  |
Accounts Receivable, before Allowance for Credit Loss, Current | 4,440 | 5,844
Liabilities, Current [Abstract] |  |
Notes Payable, Current | 1,140 | 1,140
Accounts Payable, Current | 44,413 | 45,479
Liabilities, Noncurrent [Abstract] |  |
Notes Payable, Noncurrent | 5,864 | 5,864
Entergy New Orleans [Member] | Nonrelated Party [Member] |  |
Accounts Receivable [Abstract] |  |
Accounts Receivable, before Allowance for Credit Loss, Current | 67,888 | 65,731
Liabilities, Current [Abstract] |  |
Accounts Payable, Current | 35,249 | 43,750
Entergy Texas [Member] |  |
Cash and Cash Equivalents [Abstract] |  |
Cash | 120 | 291
Cash Equivalents, at Carrying Value | 298,015 | 184,706
Cash and Cash Equivalents, at Carrying Value, Total | 298,135 | 184,997
Other Restricted Assets, Current | 8,838 | 2,703
Accounts Receivable [Abstract] |  |
Accounts Receivable, Allowance for Credit Loss, Current | (1,126) | (1,304)
Other Receivables | 30,535 | 43,773
Unbilled Receivables, Current | 69,532 | 74,060
Accounts and Other Receivables, Net, Current | 240,839 | 227,935
Energy Related Inventory | 40,419 | 45,970
Public Utilities, Inventory | 155,043 | 157,241
Prepaid Expense and Other Assets, Current | 33,146 | 34,803
Assets, Current, Total | 776,420 | 653,649
Assets, Noncurrent [Abstract] |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 96 | 107
Other Long-Term Investments | 15,968 | 15,878
Long-Term Investments, Total | 16,064 | 15,985
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |
Public Utilities, Property, Plant and Equipment, Electric | 8,692,564 | 8,628,625
Public Utilities, Property, Plant and Equipment, Construction Work in Progress | 1,841,353 | 1,513,170
Public Utilities, Property, Plant and Equipment, Plant in Service, Total | 10,533,917 | 10,141,795
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation | 2,609,736 | 2,548,961
Public Utilities, Property, Plant and Equipment, Net, Total | 7,924,181 | 7,592,834
Regulatory Asset [Abstract] |  |
Regulatory Asset, Noncurrent | 521,801 | 549,708
Other Assets, Noncurrent | 176,574 | 157,904
Deferred Costs and Other Assets | 698,375 | 707,612
Assets, Total | 9,415,040 | 8,970,080
Liabilities, Current [Abstract] |  |
Contract with Customer, Refund Liability, Current | 40,232 | 40,782
Taxes Payable, Current | 37,385 | 76,474
Interest Payable, Current | 16,287 | 38,703
Deferred Fuel Costs Current Liabilities | 2,247 | 59,271
Other Liabilities, Current | 17,577 | 20,836
Liabilities, Current, Total | 552,248 | 662,805
Liabilities, Noncurrent [Abstract] |  |
Deferred Income Taxes and Other Tax Liabilities, Noncurrent | 885,116 | 868,849
Accumulated Deferred Investment Tax Credit | 7,028 | 7,215
Regulatory Liability For Income Taxes - Net | 87,909 | 93,766
Regulatory Liability, Noncurrent | 18,248 | 18,705
Asset Retirement Obligations, Noncurrent | 14,498 | 17,688
Loss Contingency Accrual | 9,425 | 9,985
Long-Term Debt, Excluding Current Maturities | 4,047,376 | 3,552,443
Deferred Credits and Other Liabilities | 385,642 | 397,412
Liabilities, Noncurrent, Total | 5,455,242 | 4,966,063
Commitments and Contingencies |  |
Common Stock, No Par Value | $ 0 | $ 0
Common Shareholders Equity [Abstract] |  |
Preferred Stock, Value, Issued | $ 38,750 | $ 38,750
Common Stock, Value, Issued | 49,452 | 49,452
Additional Paid in Capital, Common Stock | 1,200,125 | 1,200,125
Retained Earnings (Accumulated Deficit) | 2,119,223 | 2,052,885
Equity, Attributable to Parent, Total | 3,368,800 | 3,302,462
Equity, Including Portion Attributable to Noncontrolling Interest, Total | 3,407,550 | 3,341,212
Liabilities and Equity, Total | 9,415,040 | 8,970,080
Entergy Texas [Member] | Affiliated Entity [Member] |  |
Accounts Receivable [Abstract] |  |
Accounts Receivable, before Allowance for Credit Loss, Current | 61,111 | 26,564
Liabilities, Current [Abstract] |  |
Accounts Payable, Current | 58,411 | 65,335
Entergy Texas [Member] | Nonrelated Party [Member] |  |
Accounts Receivable [Abstract] |  |
Accounts Receivable, before Allowance for Credit Loss, Current | 80,787 | 84,842
Liabilities, Current [Abstract] |  |
Accounts Payable, Current | 380,109 | 361,404
System Energy [Member] |  |
Cash and Cash Equivalents [Abstract] |  |
Cash | 155 | 448
Cash Equivalents, at Carrying Value | 2,414 | 28,460
Cash and Cash Equivalents, at Carrying Value, Total | 2,569 | 28,908
Accounts Receivable [Abstract] |  |
Accounts Receivable, before Allowance for Credit Loss, Current | 53,122 | 48,134
Other Receivables | 3,973 | 5,425
Accounts and Other Receivables, Net, Current | 57,095 | 53,559
Public Utilities, Inventory | 163,069 | 163,814
Prepaid Expense and Other Assets, Current | 9,515 | 5,768
Deferred Nuclear Refueling Outage Costs | 15,927 | 19,884
Assets, Current, Total | 248,175 | 271,933
Assets, Noncurrent [Abstract] |  |
Decommissioning Fund Investments | 1,497,337 | 1,529,059
Long-Term Investments, Total | 1,497,337 | 1,529,059
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |
Public Utilities, Property, Plant and Equipment, Electric | 5,667,176 | 5,668,253
Public Utilities, Property, Plant and Equipment, Construction Work in Progress | 110,883 | 85,127
Public Utilities, Property, Plant and Equipment, Fuel | 178,151 | 220,044
Public Utilities, Property, Plant and Equipment, Plant in Service, Total | 5,956,210 | 5,973,424
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation | 3,608,136 | 3,578,709
Public Utilities, Property, Plant and Equipment, Net, Total | 2,348,074 | 2,394,715
Regulatory Asset [Abstract] |  |
Regulatory Asset, Noncurrent | 423,799 | 426,494
Other Assets, Noncurrent | 22,033 | 20,273
Deferred Costs and Other Assets | 445,832 | 446,767
Assets, Total | 4,539,418 | 4,642,474
Liabilities, Current [Abstract] |  |
Long-Term Debt, Current Maturities | 200,112 | 200,090
Taxes Payable, Current | 4,163 | 15,852
Interest Payable, Current | 18,859 | 13,342
Other Liabilities, Current | 4,475 | 4,473
Liabilities, Current, Total | 250,265 | 297,251
Liabilities, Noncurrent [Abstract] |  |
Deferred Income Taxes and Other Tax Liabilities, Noncurrent | 456,917 | 451,830
Accumulated Deferred Investment Tax Credit | 42,614 | 42,984
Regulatory Liability For Income Taxes - Net | 104,065 | 105,467
Regulatory Liability, Noncurrent | 703,269 | 747,190
Asset Retirement Obligations, Noncurrent | 1,138,857 | 1,127,712
Liability, Defined Benefit Plan, Noncurrent | 6,316 | 8,353
Long-Term Debt, Excluding Current Maturities | 876,685 | 889,646
Deferred Credits and Other Liabilities | 2 | 2
Liabilities, Noncurrent, Total | 3,328,725 | 3,373,184
Commitments and Contingencies |  |
Common Stock, No Par Value | $ 0 | $ 0
Common Shareholders Equity [Abstract] |  |
Common Stock, Value, Issued | $ 938,944 | $ 958,944
Retained Earnings (Accumulated Deficit) | 21,484 | 13,095
Equity, Including Portion Attributable to Noncontrolling Interest, Total | 960,428 | 972,039
Liabilities and Equity, Total | 4,539,418 | 4,642,474
System Energy [Member] | Affiliated Entity [Member] |  |
Liabilities, Current [Abstract] |  |
Accounts Payable, Current | 5,248 | 18,477
System Energy [Member] | Nonrelated Party [Member] |  |
Liabilities, Current [Abstract] |  |
Accounts Payable, Current | $ 17,408 | $ 45,017

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