XML 37 R4.htm IDEA: XBRL DOCUMENT v3.24.3Close
Consolidated Balance Sheets - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Cash and Cash Equivalents [Abstract]    
Cash $ 91,247 $ 71,609
Cash Equivalents, at Carrying Value 1,320,565 60,939
Cash and Cash Equivalents, at Carrying Value, Total 1,411,812 132,548
Accounts Receivable [Abstract]    
Accounts Receivable, before Allowance for Credit Loss, Current 939,477 699,411
Accounts Receivable, Allowance for Credit Loss, Current (22,090) (25,905)
Other Receivables 203,242 225,334
Unbilled Receivables, Current 545,946 494,615
Accounts and Other Receivables, Net, Current 1,666,575 1,393,455
Deferred Fuel Cost 6,774 169,967
Energy Related Inventory 156,146 192,799
Public Utilities, Inventory 1,623,051 1,418,969
Prepaid Expense and Other Assets, Current 246,079 213,016
Deferred Nuclear Refueling Outage Costs 107,369 140,115
Assets, Current, Total 5,217,806 3,660,869
Assets, Noncurrent [Abstract]    
Decommissioning Fund Investments 5,541,880 4,863,710
Property, Plant and Equipment, Net 420,975 418,546
Asset Recovery Damaged Property Costs, Noncurrent 336,407 323,206
Other Long-Term Investments 72,127 69,494
Long-Term Investments, Total 6,371,389 5,674,956
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Public Utilities, Property, Plant and Equipment, Electric 69,062,171 66,850,474
Public Utilities, Property, Plant and Equipment, Natural Gas 740,293 717,503
Public Utilities, Property, Plant and Equipment, Construction Work in Progress 3,476,086 2,109,703
Public Utilities, Property, Plant and Equipment, Fuel 704,843 707,852
Public Utilities, Property, Plant and Equipment, Plant in Service, Total 73,983,393 70,385,532
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation 27,540,653 26,551,203
Public Utilities, Property, Plant and Equipment, Net, Total 46,442,740 43,834,329
Regulatory Asset [Abstract]    
Regulatory Asset, Noncurrent 5,487,360 5,669,404
Deferred Fuel Cost, Noncurrent 172,201 172,201
Goodwill 374,099 374,099
Deferred Income Tax Assets, Net 15,837 16,367
Other Assets, Noncurrent 380,617 301,171
Deferred Costs and Other Assets 6,430,114 6,533,242
Assets, Total 64,462,049 59,703,396 CloseClose
Liabilities, Current [Abstract]     Close
Long-Term Debt, Current Maturities 1,317,090 2,099,057 Close
Short-Term Debt 1,122,409 1,138,171 Close
Accounts Payable, Current 1,523,279 1,566,745 Close
Contract with Customer, Refund Liability, Current 466,770 446,146 Close
Taxes Payable, Current 571,025 434,213 Close
Interest Payable, Current 273,035 214,197 Close
Deferred Fuel Costs Current Liabilities 264,097 218,927 Close
Liability, Defined Benefit Plan, Current 55,151 59,508 Close
Other Liabilities, Current 266,390 219,528 Close
Liabilities, Current, Total 5,859,246 6,396,492
Liabilities, Noncurrent [Abstract]     Close
Deferred Income Taxes and Other Tax Liabilities, Noncurrent 4,549,519 4,245,982 Close
Accumulated Deferred Investment Tax Credit 197,580 205,973 Close
Regulatory Liability For Income Taxes - Net 1,032,288 1,033,242 Close
Regulatory Liability, Noncurrent 3,684,331 3,116,926 Close
Asset Retirement Obligations, Noncurrent 4,816,619 4,505,782 Close
Loss Contingency Accrual 481,896 462,570 Close
Liability, Defined Benefit Plan, Noncurrent 460,824 648,413 Close
Long-Term Debt, Excluding Current Maturities 26,563,350 23,008,839 Close
Deferred Credits and Other Liabilities 1,455,275 1,116,661 Close
Liabilities, Noncurrent, Total 43,241,682 38,344,388
Commitments and Contingencies Close
Temporary Equity, Carrying Amount, Attributable to Parent 219,410 219,410
Total Liabilities 49100928.0 44740880.0 0 0 0 Close
Common Shareholders Equity [Abstract]     Close
Preferred Stock, Value, Issued 0 0
Common Stock, Value, Issued 2,810 2,810
Additional Paid in Capital, Common Stock 7,808,406 7,795,411
Retained Earnings (Accumulated Deficit) 11,985,552 11,940,384
Accumulated Other Comprehensive Income (Loss), Net of Tax 76,185 (162,460)
Treasury Stock, Value 4,840,111 4,953,498
Equity, Attributable to Parent, Total 15,032,842 14,622,647
Equity, Attributable to Noncontrolling Interest 108,869 120,459
Equity, Including Portion Attributable to Noncontrolling Interest, Total 15,141,711 14,743,106
Liabilities and Equity, Total 64,462,049 59,703,396
Entergy Arkansas [Member]    
Cash and Cash Equivalents [Abstract]    
Cash 7,247 520
Cash Equivalents, at Carrying Value 632,936 3,112
Cash and Cash Equivalents, at Carrying Value, Total 640,183 3,632
Accounts Receivable [Abstract]    
Accounts Receivable, Allowance for Credit Loss, Current (5,069) (7,182)
Other Receivables 67,388 89,532
Unbilled Receivables, Current 124,171 117,119
Accounts and Other Receivables, Net, Current 471,263 481,661
Energy Related Inventory 37,820 57,495
Public Utilities, Inventory 404,995 358,302
Prepaid Expense and Other Assets, Current 40,231 40,866
Deferred Nuclear Refueling Outage Costs 36,320 35,463
Assets, Current, Total 1,630,812 977,419
Assets, Noncurrent [Abstract]    
Decommissioning Fund Investments 1,601,796 1,414,009
Other Long-Term Investments 798 801
Long-Term Investments, Total 1,602,594 1,414,810
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Public Utilities, Property, Plant and Equipment, Electric 15,540,379 14,821,814
Public Utilities, Property, Plant and Equipment, Construction Work in Progress 717,530 340,601
Public Utilities, Property, Plant and Equipment, Fuel 238,710 213,722
Public Utilities, Property, Plant and Equipment, Plant in Service, Total 16,496,619 15,376,137
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation 6,225,012 6,002,203
Public Utilities, Property, Plant and Equipment, Net, Total 10,271,607 9,373,934
Regulatory Asset [Abstract]    
Regulatory Asset, Noncurrent 1,708,042 1,885,361
Other Assets, Noncurrent 151,548 21,334
Deferred Costs and Other Assets 1,859,590 1,906,695
Assets, Total 15,364,603 13,672,858
Liabilities, Current [Abstract]    
Long-Term Debt, Current Maturities 0 375,000
Contract with Customer, Refund Liability, Current 126,165 113,186
Taxes Payable, Current 120,127 105,151
Interest Payable, Current 68,450 35,370
Deferred Fuel Costs Current Liabilities 71,487 88,282
Other Liabilities, Current 67,165 55,683
Liabilities, Current, Total 721,048 1,213,518
Liabilities, Noncurrent [Abstract]    
Deferred Income Taxes and Other Tax Liabilities, Noncurrent 1,475,800 1,437,053
Accumulated Deferred Investment Tax Credit 26,369 27,270
Regulatory Liability For Income Taxes - Net 417,942 392,496
Regulatory Liability, Noncurrent 803,934 759,181
Asset Retirement Obligations, Noncurrent 1,703,370 1,560,057
Loss Contingency Accrual 68,940 58,959
Liability, Defined Benefit Plan, Noncurrent 91,547 8,901
Long-Term Debt, Excluding Current Maturities 5,135,751 4,298,080
Deferred Credits and Other Liabilities 216,113 156,673
Liabilities, Noncurrent, Total 9,939,766 8,698,670
Commitments and Contingencies
Common Shareholders Equity [Abstract]    
Members' Equity 4,686,520 3,739,071
Equity, Attributable to Noncontrolling Interest 17,269 21,599
Equity, Including Portion Attributable to Noncontrolling Interest, Total 4,703,789 3,760,670
Liabilities and Equity, Total 15,364,603 13,672,858
Entergy Arkansas [Member] | Affiliated Entity [Member]    
Accounts Receivable [Abstract]    
Accounts Receivable, before Allowance for Credit Loss, Current 105,216 124,672
Liabilities, Current [Abstract]    
Accounts Payable, Current 58,479 225,344
Entergy Arkansas [Member] | Nonrelated Party [Member]    
Accounts Receivable [Abstract]    
Accounts Receivable, before Allowance for Credit Loss, Current 179,557 157,520
Liabilities, Current [Abstract]    
Accounts Payable, Current 209,175 215,502
Entergy Louisiana [Member]    
Cash and Cash Equivalents [Abstract]    
Cash 572 2,255
Cash Equivalents, at Carrying Value 100,767 517
Cash and Cash Equivalents, at Carrying Value, Total 101,339 2,772
Accounts Receivable [Abstract]    
Accounts Receivable, Allowance for Credit Loss, Current (5,703) (6,156)
Other Receivables 58,441 74,685
Unbilled Receivables, Current 222,819 202,173
Accounts and Other Receivables, Net, Current 841,002 617,770
Deferred Fuel Cost 0 24,800
Energy Related Inventory 50,238 57,818
Public Utilities, Inventory 749,198 652,180
Prepaid Expense and Other Assets, Current 310,196 71,613
Deferred Nuclear Refueling Outage Costs 47,307 96,047
Assets, Current, Total 2,099,280 1,523,000
Assets, Noncurrent [Abstract]    
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures 4,301,641 4,496,245
Decommissioning Fund Investments 2,414,795 2,107,384
Property, Plant and Equipment, Net 407,752 404,043
Asset Recovery Damaged Property Costs, Noncurrent 253,662 243,819
Other Long-Term Investments 9,668 9,367
Long-Term Investments, Total 7,387,518 7,260,858
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Public Utilities, Property, Plant and Equipment, Electric 28,479,977 27,800,467
Public Utilities, Property, Plant and Equipment, Natural Gas 328,174 315,658
Public Utilities, Property, Plant and Equipment, Construction Work in Progress 753,066 592,803
Public Utilities, Property, Plant and Equipment, Fuel 258,395 333,472
Public Utilities, Property, Plant and Equipment, Plant in Service, Total 29,819,612 29,042,400
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation 10,913,299 10,570,707
Public Utilities, Property, Plant and Equipment, Net, Total 18,906,313 18,471,693
Regulatory Asset [Abstract]    
Regulatory Asset, Noncurrent 1,741,585 1,648,852
Deferred Fuel Cost, Noncurrent 168,122 168,122
Other Assets, Noncurrent 55,524 36,945
Deferred Costs and Other Assets 1,965,231 1,853,919
Assets, Total 30,358,342 29,109,470
Liabilities, Current [Abstract]    
Long-Term Debt, Current Maturities 300,000 1,400,000
Contract with Customer, Refund Liability, Current 172,631 167,905
Taxes Payable, Current 206,656 66,463
Interest Payable, Current 76,318 91,656
Deferred Fuel Costs Current Liabilities 37,093 0
Other Liabilities, Current 108,904 87,468
Liabilities, Current, Total 1,514,102 2,563,922
Liabilities, Noncurrent [Abstract]    
Deferred Income Taxes and Other Tax Liabilities, Noncurrent 2,554,396 2,391,442
Accumulated Deferred Investment Tax Credit 89,820 93,242
Regulatory Liability For Income Taxes - Net 194,426 193,754
Regulatory Liability, Noncurrent 1,791,992 1,407,689
Asset Retirement Obligations, Noncurrent 1,940,069 1,836,240
Loss Contingency Accrual 275,074 263,869
Liability, Defined Benefit Plan, Noncurrent 238,586 271,928
Long-Term Debt, Excluding Current Maturities 9,576,127 8,020,689
Deferred Credits and Other Liabilities 617,887 493,176
Liabilities, Noncurrent, Total 17,278,377 14,972,029
Commitments and Contingencies
Common Shareholders Equity [Abstract]    
Members' Equity 11,471,670 11,473,614
Equity, Attributable to Noncontrolling Interest 45,466 45,107
Accumulated Other Comprehensive Income (Loss), Net of Tax 48,727 54,798
Equity, Including Portion Attributable to Noncontrolling Interest, Total 11,565,863 11,573,519
Liabilities and Equity, Total 30,358,342 29,109,470
Entergy Louisiana [Member] | Affiliated Entity [Member]    
Accounts Receivable [Abstract]    
Accounts Receivable, before Allowance for Credit Loss, Current 171,439 82,292
Liabilities, Current [Abstract]    
Accounts Payable, Current 92,973 283,016
Entergy Louisiana [Member] | Nonrelated Party [Member]    
Accounts Receivable [Abstract]    
Accounts Receivable, before Allowance for Credit Loss, Current 394,006 264,776
Liabilities, Current [Abstract]    
Accounts Payable, Current 519,527 467,414
Entergy Mississippi [Member]    
Cash and Cash Equivalents [Abstract]    
Cash 761 30
Cash Equivalents, at Carrying Value 36,372 6,600
Cash and Cash Equivalents, at Carrying Value, Total 37,133 6,630
Accounts Receivable [Abstract]    
Accounts Receivable, Allowance for Credit Loss, Current (2,714) (3,312)
Other Receivables 23,613 17,697
Unbilled Receivables, Current 77,690 71,465
Accounts and Other Receivables, Net, Current 249,753 212,236
Energy Related Inventory 13,861 16,196
Public Utilities, Inventory 111,342 95,526
Prepaid Expense and Other Assets, Current 12,916 12,740
Assets, Current, Total 425,005 343,328
Assets, Noncurrent [Abstract]    
Property, Plant and Equipment, Net 4,486 4,497
Asset Recovery Damaged Property Costs, Noncurrent 0 656
Long-Term Investments, Total 4,486 5,153
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Public Utilities, Property, Plant and Equipment, Electric 7,695,382 7,455,145
Public Utilities, Property, Plant and Equipment, Construction Work in Progress 356,032 139,635
Public Utilities, Property, Plant and Equipment, Plant in Service, Total 8,051,414 7,594,780
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation 2,472,037 2,346,327
Public Utilities, Property, Plant and Equipment, Net, Total 5,579,377 5,248,453
Regulatory Asset [Abstract]    
Regulatory Asset, Noncurrent 549,027 579,076
Other Assets, Noncurrent 75,340 51,996
Deferred Costs and Other Assets 624,367 631,072
Assets, Total 6,633,235 6,228,006
Liabilities, Current [Abstract]    
Long-Term Debt, Current Maturities 0 100,000
Contract with Customer, Refund Liability, Current 93,746 92,637
Taxes Payable, Current 100,563 115,134
Interest Payable, Current 34,392 21,537
Deferred Fuel Costs Current Liabilities 144,583 130,645
Other Liabilities, Current 21,970 26,463
Liabilities, Current, Total 564,522 712,646
Liabilities, Noncurrent [Abstract]    
Deferred Income Taxes and Other Tax Liabilities, Noncurrent 884,553 821,744
Accumulated Deferred Investment Tax Credit 13,267 13,811
Regulatory Liability For Income Taxes - Net 180,729 188,714
Regulatory Liability, Noncurrent 60,027 33,696
Asset Retirement Obligations, Noncurrent 30,725 8,229
Loss Contingency Accrual 34,947 39,481
Long-Term Debt, Excluding Current Maturities 2,426,893 2,129,510
Deferred Credits and Other Liabilities 78,611 71,961
Liabilities, Noncurrent, Total 3,709,752 3,307,146
Commitments and Contingencies
Common Shareholders Equity [Abstract]    
Members' Equity 2,347,827 2,189,461
Equity, Attributable to Noncontrolling Interest 11,134 18,753
Equity, Including Portion Attributable to Noncontrolling Interest, Total 2,358,961 2,208,214
Liabilities and Equity, Total 6,633,235 6,228,006
Entergy Mississippi [Member] | Affiliated Entity [Member]    
Accounts Receivable [Abstract]    
Accounts Receivable, before Allowance for Credit Loss, Current 13,778 4,997
Liabilities, Current [Abstract]    
Accounts Payable, Current 46,602 133,571
Entergy Mississippi [Member] | Nonrelated Party [Member]    
Accounts Receivable [Abstract]    
Accounts Receivable, before Allowance for Credit Loss, Current 137,386 121,389
Liabilities, Current [Abstract]    
Accounts Payable, Current 122,666 92,659
Entergy New Orleans [Member]    
Cash and Cash Equivalents [Abstract]    
Cash 98 26
Cash Equivalents, at Carrying Value 34,415 0
Cash and Cash Equivalents, at Carrying Value, Total 34,513 26
Restricted Cash and Cash Equivalents, Current 1,565 2,426
Accounts Receivable [Abstract]    
Accounts Receivable, Allowance for Credit Loss, Current (6,952) (7,770)
Other Receivables 5,109 5,270
Unbilled Receivables, Current 36,709 31,087
Accounts and Other Receivables, Net, Current 225,103 97,502
Deferred Fuel Cost 6,774 6,148
Energy Related Inventory 3,278 3,298
Public Utilities, Inventory 33,639 30,019
Prepaid Expense and Other Assets, Current 15,759 11,482
Prepaid Taxes 0 1,574
Assets, Current, Total 320,631 152,475
Assets, Noncurrent [Abstract]    
Property, Plant and Equipment, Net 832 832
Asset Recovery Damaged Property Costs, Noncurrent 82,745 78,731
Long-Term Investments, Total 83,577 79,563
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Public Utilities, Property, Plant and Equipment, Electric 2,096,668 2,046,928
Public Utilities, Property, Plant and Equipment, Natural Gas 412,120 401,846
Public Utilities, Property, Plant and Equipment, Construction Work in Progress 57,197 25,424
Public Utilities, Property, Plant and Equipment, Plant in Service, Total 2,565,985 2,474,198
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation 894,610 858,672
Public Utilities, Property, Plant and Equipment, Net, Total 1,671,375 1,615,526
Regulatory Asset [Abstract]    
Regulatory Asset, Noncurrent 172,228 182,367
Deferred Fuel Cost, Noncurrent 4,080 4,080
Other Assets, Noncurrent 87,363 63,964
Deferred Costs and Other Assets 263,671 250,411
Assets, Total 2,339,254 2,097,975
Liabilities, Current [Abstract]    
Long-Term Debt, Current Maturities 78,000 85,000
Contract with Customer, Refund Liability, Current 33,159 32,420
Taxes Payable, Current 1,896 0
Interest Payable, Current 11,142 8,534
Other Liabilities, Current 11,309 8,953
Liabilities, Current, Total 226,791 252,731
Liabilities, Noncurrent [Abstract]    
Deferred Income Taxes and Other Tax Liabilities, Noncurrent 195,942 195,615
Accumulated Deferred Investment Tax Credit 15,644 16,457
Regulatory Liability For Income Taxes - Net 33,974 36,061
Regulatory Liability, Noncurrent 262,063 90,434
Loss Contingency Accrual 92,225 88,124
Long-Term Debt, Excluding Current Maturities 650,332 584,171
Deferred Credits and Other Liabilities 37,240 20,624
Liabilities, Noncurrent, Total 1,294,424 1,038,490
Commitments and Contingencies
Common Shareholders Equity [Abstract]    
Members' Equity 818,039 806,754
Equity, Including Portion Attributable to Noncontrolling Interest, Total 818,039 806,754
Liabilities and Equity, Total 2,339,254 2,097,975
Entergy New Orleans [Member] | Affiliated Entity [Member]    
Accounts Receivable [Abstract]    
Accounts Receivable, before Allowance for Credit Loss, Current 104,612 1,657
Liabilities, Current [Abstract]    
Notes Payable, Current 1,275 1,275
Accounts Payable, Current 44,847 76,736
Liabilities, Noncurrent [Abstract]    
Notes Payable, Noncurrent 7,004 7,004
Entergy New Orleans [Member] | Nonrelated Party [Member]    
Accounts Receivable [Abstract]    
Accounts Receivable, before Allowance for Credit Loss, Current 85,625 67,258
Liabilities, Current [Abstract]    
Accounts Payable, Current 45,163 39,813
Entergy Texas [Member]    
Cash and Cash Equivalents [Abstract]    
Cash 289 1,497
Cash Equivalents, at Carrying Value 353,354 20,489
Cash and Cash Equivalents, at Carrying Value, Total 353,643 21,986
Restricted Cash and Cash Equivalents, Current 9,686 5,195
Accounts Receivable [Abstract]    
Accounts Receivable, Allowance for Credit Loss, Current (1,652) (1,484)
Other Receivables 27,193 24,416
Unbilled Receivables, Current 84,558 72,771
Accounts and Other Receivables, Net, Current 303,563 514,112
Deferred Fuel Cost 0 139,019
Energy Related Inventory 45,241 50,847
Public Utilities, Inventory 153,989 123,020
Prepaid Expense and Other Assets, Current 43,938 35,232
Assets, Current, Total 910,060 889,411
Assets, Noncurrent [Abstract]    
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures 118 214
Property, Plant and Equipment, Net 376 376
Other Long-Term Investments 15,374 15,068
Long-Term Investments, Total 15,868 15,658
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Public Utilities, Property, Plant and Equipment, Electric 8,288,259 7,931,340
Public Utilities, Property, Plant and Equipment, Construction Work in Progress 1,447,020 857,707
Public Utilities, Property, Plant and Equipment, Plant in Service, Total 9,735,279 8,789,047
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation 2,528,368 2,363,919
Public Utilities, Property, Plant and Equipment, Net, Total 7,206,911 6,425,128
Regulatory Asset [Abstract]    
Regulatory Asset, Noncurrent 575,619 596,606
Other Assets, Noncurrent 163,334 129,769
Deferred Costs and Other Assets 738,953 726,375
Assets, Total 8,871,792 8,056,572
Liabilities, Current [Abstract]    
Contract with Customer, Refund Liability, Current 41,069 39,999
Taxes Payable, Current 70,395 78,887
Interest Payable, Current 16,262 31,285
Deferred Fuel Costs Current Liabilities 10,935 0
Other Liabilities, Current 20,773 16,237
Liabilities, Current, Total 513,859 436,534
Liabilities, Noncurrent [Abstract]    
Deferred Income Taxes and Other Tax Liabilities, Noncurrent 874,261 814,905
Accumulated Deferred Investment Tax Credit 7,402 7,963
Regulatory Liability For Income Taxes - Net 98,901 114,759
Regulatory Liability, Noncurrent 27,567 43,013
Asset Retirement Obligations, Noncurrent 17,457 11,743
Loss Contingency Accrual 8,212 9,480
Long-Term Debt, Excluding Current Maturities 3,561,402 3,225,092
Deferred Credits and Other Liabilities 400,346 274,421
Liabilities, Noncurrent, Total 4,995,548 4,501,376
Commitments and Contingencies
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) 2,074,058 1,830,335
Equity, Attributable to Parent, Total 3,323,635 3,079,912
Equity, Including Portion Attributable to Noncontrolling Interest, Total 3,362,385 3,118,662
Liabilities and Equity, Total 8,871,792 8,056,572
Entergy Texas [Member] | Affiliated Entity [Member]    
Accounts Receivable [Abstract]    
Accounts Receivable, before Allowance for Credit Loss, Current 50,561 329,941
Liabilities, Current [Abstract]    
Accounts Payable, Current 64,376 74,423
Entergy Texas [Member] | Nonrelated Party [Member]    
Accounts Receivable [Abstract]    
Accounts Receivable, before Allowance for Credit Loss, Current 142,903 88,468
Liabilities, Current [Abstract]    
Accounts Payable, Current 290,049 195,703
System Energy [Member]    
Cash and Cash Equivalents [Abstract]    
Cash 616 60
Cash Equivalents, at Carrying Value 77,579 0
Cash and Cash Equivalents, at Carrying Value, Total 78,195 60
Accounts Receivable [Abstract]    
Accounts Receivable, before Allowance for Credit Loss, Current 56,881 54,544
Other Receivables 4,929 6,861
Accounts and Other Receivables, Net, Current 61,810 61,405
Public Utilities, Inventory 165,368 155,565
Prepaid Expense and Other Assets, Current 6,817 3,373
Deferred Nuclear Refueling Outage Costs 23,742 8,603
Assets, Current, Total 335,932 229,006
Assets, Noncurrent [Abstract]    
Decommissioning Fund Investments 1,525,289 1,342,317
Long-Term Investments, Total 1,525,289 1,342,317
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Public Utilities, Property, Plant and Equipment, Electric 5,613,464 5,495,728
Public Utilities, Property, Plant and Equipment, Construction Work in Progress 96,380 130,866
Public Utilities, Property, Plant and Equipment, Fuel 207,738 160,655
Public Utilities, Property, Plant and Equipment, Plant in Service, Total 5,917,582 5,787,249
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation 3,553,541 3,493,299
Public Utilities, Property, Plant and Equipment, Net, Total 2,364,041 2,293,950
Regulatory Asset [Abstract]    
Regulatory Asset, Noncurrent 424,243 446,360
Other Assets, Noncurrent 13,408 730
Deferred Costs and Other Assets 437,651 447,090
Assets, Total 4,662,913 4,312,363
Liabilities, Current [Abstract]    
Long-Term Debt, Current Maturities 90 57
Taxes Payable, Current 10,997 27,401
Interest Payable, Current 13,781 12,954
Other Liabilities, Current 4,353 4,354
Liabilities, Current, Total 258,329 236,869
Liabilities, Noncurrent [Abstract]    
Deferred Income Taxes and Other Tax Liabilities, Noncurrent 445,859 405,744
Accumulated Deferred Investment Tax Credit 44,908 46,960
Regulatory Liability For Income Taxes - Net 106,316 107,458
Regulatory Liability, Noncurrent 738,748 782,912
Asset Retirement Obligations, Noncurrent 1,116,679 1,084,234
Liability, Defined Benefit Plan, Noncurrent 21,535 19,491
Long-Term Debt, Excluding Current Maturities 809,495 738,402
Deferred Credits and Other Liabilities 462 1,754
Liabilities, Noncurrent, Total 3,284,002 3,186,955
Commitments and Contingencies
Common Shareholders Equity [Abstract]    
Common Stock, Value, Issued 1,066,850 916,850
Retained Earnings (Accumulated Deficit) 53,732 (28,311)
Equity, Including Portion Attributable to Noncontrolling Interest, Total 1,120,582 888,539
Liabilities and Equity, Total 4,662,913 4,312,363
System Energy [Member] | Affiliated Entity [Member]    
Liabilities, Current [Abstract]    
Accounts Payable, Current 188,152 118,523
System Energy [Member] | Nonrelated Party [Member]    
Liabilities, Current [Abstract]    
Accounts Payable, Current $ 40,956 $ 73,580