Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
OPERATING ACTIVITIES
Consolidated net income	$ 1,374,026	$ 999,486
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	1,668,540	1,667,756
Deferred income taxes, investment tax credits, and non-current taxes accrued	257,210	(76,672)
Asset Impairment Charges	38,078	(163,464)
Changes in working capital:
Receivables	(217,483)	(368,772)
Fuel inventory	(34,601)	19,433
Accounts payable	(304,264)	(59,787)
Taxes accrued	107,899	89,554
Interest accrued	66,571	38,361
Deferred fuel costs	620,440	(821,386)
Other working capital accounts	(137,061)	(124,677)
Changes in provisions for estimated losses	(7,171)	297,842
Changes in regulatory assets	415,101	587,128
Increase (Decrease) in Regulatory Liabilities	204,817	(116,315)
Storm restoration costs approved for securitization recognized as regulatory asset	(491,150)	(1,036,955)
Changes in pension and other postretirement liabilities	(347,886)	(258,141)
Other Operating Activities, Cash Flow Statement	17,927	1,136,050
Net cash flow provided by operating activities	3,230,993	1,809,441
INVESTING ACTIVITIES
Construction/capital expenditures	(3,373,617)	(3,853,121)
Allowance for equity funds used during construction	72,238	49,685
Nuclear fuel purchases	(201,213)	(125,619)
Payments for Nuclear Fuel	(201,213)	(125,619)
Proceeds from insurance	19,493	0
Proceeds from Legal Settlements	0	9,829
Payments to storm reserve escrow accounts	(14,320)	(1,291,593)
Increase in other investments	(4,998)	(33,238)
Litigation proceeds for reimbursement of spent nuclear fuel storage costs	23,655	32,367
Proceeds from nuclear decommissioning trust fund sales	806,658	1,377,304
Investment in nuclear decommissioning trust funds	(882,686)	(1,422,808)
Changes in securitization account	(4,839)	1,224
Net cash flow used in investing activities	(3,579,062)	(4,368,967)
Payments for (Proceeds from) Other Investing Activities	4,998	33,238
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	(3,605,237)	(5,316,693)
Proceeds from Sale of Treasury Stock	5,184	31,802
Retirement of long-term debt	(3,384,007)	(4,998,642)
Proceeds from securitization	1,457,676	3,163,572
Dividends paid:
Common stock	(678,699)	(615,937)
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	13,739	13,739
Other	102,835	41,659
Net cash flow provided by financing activities	1,643,679	3,120,458
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	1,295,610	560,932
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	1,519,774	1,003,491
Cash paid / (received) during the period for:
Interest - net of amount capitalized	685,231	631,211
Income taxes	35,291	(7,412)
Proceeds from (Repayments of) Short-Term Debt	523,484	185,455
Proceeds from Sale of Restricted Investments	0	1,000,278
Payments to Acquire Productive Assets	(30,433)	(106,193)
Net proceeds (payments) from sale of assets	11,000	(7,082)
Proceeds from Noncontrolling Interests	25,708	9,595
Entergy Arkansas [Member]
OPERATING ACTIVITIES
Consolidated net income	225,513	278,024
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	413,018	403,929
Deferred income taxes, investment tax credits, and non-current taxes accrued	59,931	85,012
Asset Impairment Charges	78,434	0
Changes in working capital:
Receivables	(45,742)	(129,679)
Fuel inventory	8,001	7,430
Accounts payable	(71,533)	77,849
Taxes accrued	15,033	(4,838)
Interest accrued	35,534	32,360
Deferred fuel costs	165,982	(27,724)
Other working capital accounts	(12,517)	13,963
Changes in provisions for estimated losses	(24,356)	(1,840)
Changes in regulatory assets	(455)	(54,449)
Increase (Decrease) in Regulatory Liabilities	68,475	(305,972)
Changes in pension and other postretirement liabilities	(55,944)	(58,966)
Other Operating Activities, Cash Flow Statement	(96,988)	360,258
Net cash flow provided by operating activities	762,386	675,357
INVESTING ACTIVITIES
Construction/capital expenditures	(768,243)	(552,919)
Allowance for equity funds used during construction	15,822	11,786
Nuclear fuel purchases	(93,775)	(56,984)
Payments for Nuclear Fuel	(93,775)	(56,984)
Proceeds from sale of nuclear fuel	32,880	37,198
Change in money pool receivable - net	(11,104)	(1,808)
Increase in other investments	106	0
Litigation proceeds for reimbursement of spent nuclear fuel storage costs	17,933	0
Proceeds from nuclear decommissioning trust fund sales	87,878	174,893
Investment in nuclear decommissioning trust funds	(104,348)	(190,244)
Net cash flow used in investing activities	(822,851)	(579,122)
Payments for (Proceeds from) Other Investing Activities	(106)	0
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	(991,606)	(225,625)
Retirement of long-term debt	(515,615)	(21,316)
Change in money pool payable - net	(180,795)	(139,904)
Dividends paid:
Common stock	(142,000)	(86,000)
Other	15,390	(8,424)
Net cash flow provided by financing activities	168,586	(30,019)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	108,121	66,216
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	113,399	79,131
Cash paid / (received) during the period for:
Interest - net of amount capitalized	101,616	77,625
Payments to Acquire Productive Assets	0	(1,044)
Entergy Louisiana [Member]
OPERATING ACTIVITIES
Consolidated net income	866,591	741,909
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	650,800	633,124
Deferred income taxes, investment tax credits, and non-current taxes accrued	127,074	(84,719)
Changes in working capital:
Receivables	(54,518)	(193,374)
Fuel inventory	(19,194)	1,920
Accounts payable	(153,749)	(117,199)
Taxes accrued	57,979	(9,415)
Interest accrued	(9,687)	3,244
Deferred fuel costs	133,090	(272,259)
Other working capital accounts	(262,001)	(161,058)
Changes in provisions for estimated losses	7,249	292,013
Changes in regulatory assets	390,864	741,131
Increase (Decrease) in Regulatory Liabilities	200,267	(92,554)
Storm restoration costs approved for securitization recognized as regulatory asset	(491,150)	(1,190,338)
Changes in pension and other postretirement liabilities	(43,909)	(29,538)
Other Operating Activities, Cash Flow Statement	(30,918)	358,570
Net cash flow provided by operating activities	1,368,788	621,457
INVESTING ACTIVITIES
Construction/capital expenditures	(1,194,315)	(2,099,909)
Allowance for equity funds used during construction	24,660	17,865
Nuclear fuel purchases	(136,357)	(84,606)
Payments for Nuclear Fuel	(136,357)	(84,606)
Proceeds from sale of nuclear fuel	16,733	37,634
Change in money pool receivable - net	(79,136)	9,757
Proceeds from insurance	19,493	0
Proceeds from Legal Settlements	0	5,695
Payments to storm reserve escrow accounts	(10,463)	(1,291,431)
Payments to Acquire Interest in Subsidiaries and Affiliates	1,457,676	3,163,572
Increase in other investments	396	0
Proceeds from nuclear decommissioning trust fund sales	473,394	520,412
Investment in nuclear decommissioning trust funds	(516,047)	(540,653)
Net cash flow used in investing activities	(2,734,954)	(4,197,993)
Payments for (Proceeds from) Other Investing Activities	(396)	0
Proceeds from (Repurchase of) Equity	124,364	1,390,587
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	(1,196,927)	(2,673,246)
Retirement of long-term debt	(1,505,325)	(2,734,524)
Proceeds from securitization	1,457,676	3,163,572
Proceeds from Contributed Capital	1,457,676	1,000,000
Change in money pool payable - net	(226,114)	0
Dividends paid:
Common stock	(318,000)	(374,500)
Other	39,993	25,866
Net cash flow provided by financing activities	2,102,833	3,753,660
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	736,667	177,124
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	793,280	195,697
Cash paid / (received) during the period for:
Interest - net of amount capitalized	288,987	266,522
Income taxes	(6,037)	0
Proceeds from Sale of Restricted Investments	0	1,000,228
Entergy Mississippi [Member]
OPERATING ACTIVITIES
Consolidated net income	161,942	154,198
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	196,135	182,623
Deferred income taxes, investment tax credits, and non-current taxes accrued	23,405	45,811
Changes in working capital:
Receivables	(52,905)	(50,712)
Fuel inventory	(1,746)	(2,856)
Accounts payable	(56,477)	34,776
Taxes accrued	14,269	(12,542)
Interest accrued	11,334	11,171
Deferred fuel costs	215,892	(214,459)
Other working capital accounts	(24,420)	(23,012)
Changes in provisions for estimated losses	2,627	(461)
Changes in regulatory assets	(35,970)	(53,830)
Increase (Decrease) in Regulatory Liabilities	(52,712)	31,682
Changes in pension and other postretirement liabilities	(22,529)	(18,489)
Other Operating Activities, Cash Flow Statement	30,059	17,691
Net cash flow provided by operating activities	408,904	101,591
INVESTING ACTIVITIES
Construction/capital expenditures	(435,188)	(368,151)
Allowance for equity funds used during construction	6,313	4,179
Change in money pool receivable - net	26,879	40,456
Increase in other investments	(1,076)	(111)
Net cash flow used in investing activities	(433,505)	(428,776)
Payments for (Proceeds from) Other Investing Activities	1,076	111
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	(396,853)	(249,298)
Retirement of long-term debt	(400,000)	0
Change in money pool payable - net	23,893	19,319
Dividends paid:
Common stock	(40,000)	0
Other	11,484	4,243
Net cash flow provided by financing activities	17,938	282,455
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	(6,663)	(44,730)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	10,316	2,897
Cash paid / (received) during the period for:
Interest - net of amount capitalized	61,352	50,719
Payments to Acquire Productive Assets	(30,433)	(105,149)
Proceeds from Noncontrolling Interests	25,708	9,595
Entergy New Orleans [Member]
OPERATING ACTIVITIES
Consolidated net income	67,544	61,587
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	60,470	57,322
Deferred income taxes, investment tax credits, and non-current taxes accrued	23,529	22,429
Changes in working capital:
Receivables	5,119	(9,022)
Fuel inventory	2,909	(3,245)
Accounts payable	(28,968)	3,319
Taxes accrued	734	(4,241)
Interest accrued	2,195	(204)
Deferred fuel costs	8,025	(33,301)
Other working capital accounts	14,598	(5,973)
Changes in provisions for estimated losses	6,585	8,409
Changes in regulatory assets	8,597	24,449
Increase (Decrease) in Regulatory Liabilities	17,878	(8,921)
Changes in pension and other postretirement liabilities	(4,506)	(6,598)
Other Operating Activities, Cash Flow Statement	923	(9,816)
Net cash flow provided by operating activities	185,632	96,194
INVESTING ACTIVITIES
Construction/capital expenditures	(128,477)	(163,403)
Allowance for equity funds used during construction	1,062	316
Change in money pool receivable - net	135,427	35,977
Increase in other investments	(2,661)	0
Changes in securitization account	(3,437)	(3,474)
Net cash flow used in investing activities	1,914	(130,584)
Payments for (Proceeds from) Other Investing Activities	2,661	0
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	(14,630)	0
Retirement of long-term debt	(106,073)	(5,916)
Dividends paid:
Other	(760)	425
Net cash flow provided by financing activities	(77,203)	9,509
Proceeds from Contribution in Aid of Construction	15,000	15,000
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	110,343	(24,881)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	114,807	17,981
Cash paid / (received) during the period for:
Interest - net of amount capitalized	25,545	25,231
Income taxes	1,600	0
Entergy Texas [Member]
OPERATING ACTIVITIES
Consolidated net income	280,219	265,890
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	202,288	171,781
Deferred income taxes, investment tax credits, and non-current taxes accrued	57,279	57,532
Changes in working capital:
Receivables	(40,609)	(63,743)
Fuel inventory	(25,734)	16,868
Accounts payable	(9,871)	77,740
Taxes accrued	(29,995)	2,520
Interest accrued	13,612	(4,832)
Deferred fuel costs	97,451	(273,644)
Other working capital accounts	(23,042)	(11,927)
Changes in provisions for estimated losses	511	(414)
Changes in regulatory assets	(17,997)	(130,042)
Increase (Decrease) in Regulatory Liabilities	(13,111)	(23,014)
Storm restoration costs approved for securitization recognized as regulatory asset	0	153,383
Changes in pension and other postretirement liabilities	(8,961)	(12,458)
Other Operating Activities, Cash Flow Statement	16,417	(905)
Net cash flow provided by operating activities	498,457	224,735
INVESTING ACTIVITIES
Construction/capital expenditures	(711,382)	(469,630)
Allowance for equity funds used during construction	19,093	9,375
Change in money pool receivable - net	73,660	(5,146)
Proceeds from Legal Settlements	0	4,134
Increase in other investments	86	(31,160)
Changes in securitization account	(1,402)	4,698
Net cash flow used in investing activities	(608,945)	(487,729)
Payments for (Proceeds from) Other Investing Activities	(86)	31,160
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	(344,966)	(606,444)
Retirement of long-term debt	(8,856)	(54,257)
Change in money pool payable - net	0	(79,594)
Dividends paid:
Other	23,231	6,019
Net cash flow provided by financing activities	357,787	477,070
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	247,299	214,076
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	250,796	214,104
Cash paid / (received) during the period for:
Interest - net of amount capitalized	67,605	71,311
Income taxes	30,500	1,085
Dividends Paid, Preferred Stock	(1,554)	(1,542)
Proceeds from Sale of Productive Assets	11,000	0
System Energy [Member]
OPERATING ACTIVITIES
Consolidated net income	81,001	(321,359)
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	141,213	163,043
Deferred income taxes, investment tax credits, and non-current taxes accrued	24,887	(129,093)
Changes in working capital:
Receivables	49,881	(29,703)
Accounts payable	(16,504)	(7,193)
Taxes accrued	(5,782)	9,106
Interest accrued	4,571	(972)
Other working capital accounts	8,936	(34,961)
Changes in regulatory assets	(64,565)	(23,107)
Increase (Decrease) in Regulatory Liabilities	(15,981)	282,463
Changes in pension and other postretirement liabilities	(14,484)	(14,704)
Other Operating Activities, Cash Flow Statement	(37,983)	284,219
Net cash flow provided by operating activities	155,190	177,739
INVESTING ACTIVITIES
Construction/capital expenditures	(80,068)	(132,100)
Allowance for equity funds used during construction	5,289	6,164
Nuclear fuel purchases	(57,790)	(77,707)
Payments for Nuclear Fuel	(57,790)	(77,707)
Proceeds from sale of nuclear fuel	37,104	18,845
Change in money pool receivable - net	85,209	70,943
Increase in other investments	(4)	0
Proceeds from nuclear decommissioning trust fund sales	245,386	273,108
Investment in nuclear decommissioning trust funds	(262,291)	(277,916)
Net cash flow used in investing activities	(27,165)	(118,663)
Payments for (Proceeds from) Other Investing Activities	4	0
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	(662,965)	(955,587)
Retirement of long-term debt	(698,137)	(908,629)
Dividends paid:
Net cash flow provided by financing activities	(35,172)	46,958
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	92,853	106,034
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	95,793	195,235
Cash paid / (received) during the period for:
Interest - net of amount capitalized	$ 30,249	$ 30,231