Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
OPERATING ACTIVITIES
Consolidated net income	$ 312,299	$ 279,593
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	553,224	561,731
Deferred income taxes, investment tax credits, and non-current taxes accrued	(98,244)	70,780
Impairment of Long-Lived Assets Held-for-use	0	744
Changes in working capital:
Receivables	272,533	122,987
Fuel inventory	(29,484)	14,795
Accounts payable	(339,963)	(283,175)
Taxes accrued	(66,717)	(79,941)
Interest accrued	30,627	32,862
Deferred fuel costs	442,598	(58,932)
Other working capital accounts	(67,971)	(95,033)
Changes in provisions for estimated losses	25	8,206
Changes in other regulatory assets	542,694	(1,424,270)
Increase (Decrease) in Regulatory Liabilities	136,685	(250,358)
Storm restoration costs approved for securitization recognized as regulatory asset	(491,150)	1,491,942
Changes in pension and other postretirement liabilities	(64,088)	(101,641)
Other Operating Activities, Cash Flow Statement	(173,525)	247,676
Net cash flow provided by operating activities	959,543	537,966
INVESTING ACTIVITIES
Construction/capital expenditures	(1,175,657)	(1,501,578)
Allowance for equity funds used during construction	23,146	15,871
Nuclear fuel purchases	(90,809)	(83,326)
Payments for Nuclear Fuel	(90,809)	(83,326)
Proceeds from insurance	0	9,829
Payments to storm reserve escrow account	(4,196)	0
Increase in other investments	(3,462)	(11,862)
Litigation proceeds for reimbursement of spent nuclear fuel storage costs	0	32,367
Proceeds from nuclear decommissioning trust fund sales	204,128	479,937
Investment in nuclear decommissioning trust funds	(232,837)	(505,989)
Changes in securitization account	(3,904)	13,532
Net cash flow used in investing activities	(1,283,591)	(1,551,219)
Payments for (Proceeds from) Other Investing Activities	3,462	11,862
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	1,614,522	2,553,369
Proceeds from Sale of Treasury Stock	4,017	9,629
Retirement of long-term debt	(834,530)	(1,224,091)
Proceeds from securitization	1,457,676	0
Dividends paid:
Common stock	(226,194)	(205,058)
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	4,580	4,580
Other	21,490	1,382
Net cash flow provided by financing activities	2,070,396	1,272,285
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	1,746,348	259,032
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	1,970,512	701,591
Cash paid / (received) during the period for:
Interest - net of amount capitalized	215,082	186,269
Income taxes	(5,352)	(11,505)
Proceeds from (Repayments of) Short-Term Debt	37,995	141,634
Entergy Arkansas [Member]
OPERATING ACTIVITIES
Consolidated net income	59,397	65,567
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	134,779	133,634
Deferred income taxes, investment tax credits, and non-current taxes accrued	15,495	11,776
Changes in working capital:
Receivables	57,003	23,583
Fuel inventory	(15,255)	7,199
Accounts payable	(58,227)	(33,409)
Taxes accrued	10,647	27,209
Interest accrued	35,905	32,233
Deferred fuel costs	87,581	(16,954)
Other working capital accounts	(3,948)	3,794
Changes in provisions for estimated losses	(6,600)	(309)
Changes in other regulatory assets	(27,001)	(7,198)
Increase (Decrease) in Regulatory Liabilities	45,201	(91,068)
Changes in pension and other postretirement liabilities	(7,998)	(19,852)
Other Operating Activities, Cash Flow Statement	(52,942)	111,221
Net cash flow provided by operating activities	274,037	247,426
INVESTING ACTIVITIES
Construction/capital expenditures	(255,248)	(162,108)
Allowance for equity funds used during construction	4,843	3,055
Nuclear fuel purchases	(55,974)	(27,258)
Payments for Nuclear Fuel	(55,974)	(27,258)
Proceeds from sale of nuclear fuel	17,549	37,157
Change in money pool receivable - net	(11,035)	(59,981)
Increase in other investments	(17)	0
Proceeds from nuclear decommissioning trust fund sales	32,798	64,608
Investment in nuclear decommissioning trust funds	(38,948)	(69,950)
Net cash flow used in investing activities	(306,032)	(214,477)
Payments for (Proceeds from) Other Investing Activities	17	0
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	514,206	212,060
Retirement of long-term debt	(62,505)	(7,506)
Change in money pool payable - net	(180,795)	(139,904)
Dividends paid:
Common stock	(80,000)	0
Other	(4,604)	(483)
Net cash flow provided by financing activities	186,302	64,167
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	154,307	97,116
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	159,585	110,031
Cash paid / (received) during the period for:
Interest - net of amount capitalized	8,823	3,227
Entergy Louisiana [Member]
OPERATING ACTIVITIES
Consolidated net income	244,024	150,860
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	210,138	213,022
Deferred income taxes, investment tax credits, and non-current taxes accrued	(70,518)	95,785
Changes in working capital:
Receivables	119,726	71,237
Fuel inventory	(4,489)	(46)
Accounts payable	(127,171)	(262,042)
Taxes accrued	11,627	(42,950)
Interest accrued	(12,730)	(857)
Deferred fuel costs	173,809	498
Other working capital accounts	(99,650)	(24,241)
Changes in provisions for estimated losses	2,050	2,694
Changes in other regulatory assets	492,055	(1,336,616)
Increase (Decrease) in Regulatory Liabilities	155,296	(67,164)
Storm restoration costs approved for securitization recognized as regulatory asset	(491,150)	1,338,559
Changes in pension and other postretirement liabilities	(3,556)	(11,608)
Other Operating Activities, Cash Flow Statement	(59,700)	55,995
Net cash flow provided by operating activities	539,761	183,126
INVESTING ACTIVITIES
Construction/capital expenditures	(484,581)	(935,692)
Allowance for equity funds used during construction	9,061	6,726
Nuclear fuel purchases	(72,003)	(55,913)
Payments for Nuclear Fuel	(72,003)	(55,913)
Proceeds from sale of nuclear fuel	16,637	26,681
Change in money pool receivable - net	(77,354)	(66,621)
Proceeds from insurance	0	5,695
Payments to storm reserve escrow account	(3,037)	0
Payments to Acquire Interest in Subsidiaries and Affiliates	1,457,676	0
Increase in other investments	(18)	17
Proceeds from nuclear decommissioning trust fund sales	111,263	155,269
Investment in nuclear decommissioning trust funds	(127,338)	(168,283)
Net cash flow used in investing activities	(2,038,403)	(1,032,121)
Payments for (Proceeds from) Other Investing Activities	18	(17)
Proceeds from (Repurchase of) Equity	46,643	0
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	526,764	1,506,637
Retirement of long-term debt	(540,008)	(401,411)
Proceeds from securitization	1,457,676	0
Proceeds from Contributed Capital	1,457,676	0
Change in money pool payable - net	(226,114)	0
Dividends paid:
Common stock	(160,250)	(125,000)
Other	6,137	6,843
Net cash flow provided by financing activities	2,521,881	987,069
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	1,023,239	138,074
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	1,079,852	156,647
Cash paid / (received) during the period for:
Interest - net of amount capitalized	107,408	91,441
Income taxes	(6,037)	0
Entergy Mississippi [Member]
OPERATING ACTIVITIES
Consolidated net income	20,940	30,355
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	64,029	60,084
Deferred income taxes, investment tax credits, and non-current taxes accrued	8,142	3,979
Changes in working capital:
Receivables	36,802	(6,379)
Fuel inventory	(3,014)	23
Accounts payable	(33,508)	989
Taxes accrued	(80,166)	(63,785)
Interest accrued	11,078	10,613
Deferred fuel costs	67,005	(24,076)
Other working capital accounts	(9,515)	(46,494)
Changes in provisions for estimated losses	1,900	(179)
Changes in other regulatory assets	1,020	16,301
Increase (Decrease) in Regulatory Liabilities	(44,487)	21,689
Changes in pension and other postretirement liabilities	(4,062)	(3,906)
Other Operating Activities, Cash Flow Statement	697	(3,554)
Net cash flow provided by operating activities	36,861	(4,340)
INVESTING ACTIVITIES
Construction/capital expenditures	(138,760)	(102,686)
Allowance for equity funds used during construction	1,884	1,078
Change in money pool receivable - net	25,381	40,456
Increase in other investments	(347)	(2)
Net cash flow used in investing activities	(111,842)	(61,154)
Payments for (Proceeds from) Other Investing Activities	347	2
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	99,916	0
Change in money pool payable - net	0	22,386
Dividends paid:
Common stock	(12,500)	0
Other	6,738	(4,491)
Net cash flow provided by financing activities	94,154	17,895
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	19,173	(47,599)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	36,152	28
Cash paid / (received) during the period for:
Interest - net of amount capitalized	12,211	9,160
Entergy New Orleans [Member]
OPERATING ACTIVITIES
Consolidated net income	10,142	15,126
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	19,575	19,815
Deferred income taxes, investment tax credits, and non-current taxes accrued	5,147	9,558
Changes in working capital:
Receivables	26,040	39,328
Fuel inventory	2,920	446
Accounts payable	(14,313)	(14,168)
Taxes accrued	1,687	(2,803)
Interest accrued	(361)	(613)
Deferred fuel costs	6,965	(9,959)
Other working capital accounts	(12,303)	(10,876)
Changes in provisions for estimated losses	1,645	6,224
Changes in other regulatory assets	2,267	25,499
Increase (Decrease) in Regulatory Liabilities	31,170	(16,667)
Changes in pension and other postretirement liabilities	(1,113)	(2,782)
Other Operating Activities, Cash Flow Statement	(7,890)	(16,317)
Net cash flow provided by operating activities	71,578	41,811
INVESTING ACTIVITIES
Construction/capital expenditures	(46,098)	(68,959)
Allowance for equity funds used during construction	450	369
Change in money pool receivable - net	134,670	18,288
Payments to storm reserve escrow account	(811)	0
Changes in securitization account	(3,055)	(3,099)
Net cash flow used in investing activities	85,156	(53,401)
Dividends paid:
Other	(312)	(107)
Net cash flow provided by financing activities	14,688	(107)
Proceeds from Contribution in Aid of Construction	15,000	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	171,422	(11,697)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	175,886	31,165
Cash paid / (received) during the period for:
Interest - net of amount capitalized	9,630	8,957
Entergy Texas [Member]
OPERATING ACTIVITIES
Consolidated net income	41,673	50,403
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	59,391	56,061
Deferred income taxes, investment tax credits, and non-current taxes accrued	(6,536)	(1,175)
Changes in working capital:
Receivables	63,210	(1,674)
Fuel inventory	(8,445)	8,039
Accounts payable	(44,804)	4,492
Taxes accrued	(21,586)	(15,188)
Interest accrued	(12,656)	(11,195)
Deferred fuel costs	107,238	(8,440)
Other working capital accounts	9,245	4,832
Changes in provisions for estimated losses	522	54
Changes in other regulatory assets	21,535	(135,079)
Increase (Decrease) in Regulatory Liabilities	(3,283)	(11,491)
Storm restoration costs approved for securitization recognized as regulatory asset	0	153,383
Changes in pension and other postretirement liabilities	(1,960)	(4,146)
Other Operating Activities, Cash Flow Statement	(5,442)	(6,538)
Net cash flow provided by operating activities	198,102	82,338
INVESTING ACTIVITIES
Construction/capital expenditures	(205,191)	(155,948)
Allowance for equity funds used during construction	5,089	2,596
Change in money pool receivable - net	92,932	0
Proceeds from insurance	0	4,134
Increase in other investments	0	(11,949)
Changes in securitization account	(849)	16,631
Net cash flow used in investing activities	(108,019)	(144,536)
Payments for (Proceeds from) Other Investing Activities	0	11,949
Proceeds from the issuance of:
Retirement of long-term debt	0	(29,064)
Change in money pool payable - net	0	91,799
Dividends paid:
Other	(898)	(34)
Net cash flow provided by financing activities	(1,416)	62,196
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	88,667	(2)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	92,164	26
Cash paid / (received) during the period for:
Interest - net of amount capitalized	38,923	31,513
Income taxes	0	(1,913)
Dividends Paid, Preferred Stock	(518)	(505)
System Energy [Member]
OPERATING ACTIVITIES
Consolidated net income	27,545	31,432
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	63,793	46,566
Deferred income taxes, investment tax credits, and non-current taxes accrued	10,801	(8,690)
Changes in working capital:
Receivables	(8,198)	(3,845)
Accounts payable	(21,866)	(15,017)
Taxes accrued	(15,836)	5,939
Interest accrued	(58)	(475)
Other working capital accounts	2,837	(20,646)
Changes in other regulatory assets	(3,247)	(2,331)
Increase (Decrease) in Regulatory Liabilities	(47,212)	(85,655)
Changes in pension and other postretirement liabilities	(1,652)	(4,542)
Other Operating Activities, Cash Flow Statement	(39,746)	97,275
Net cash flow provided by operating activities	(32,839)	40,011
INVESTING ACTIVITIES
Construction/capital expenditures	(26,472)	(46,509)
Allowance for equity funds used during construction	1,818	2,047
Nuclear fuel purchases	(21,994)	(75,251)
Payments for Nuclear Fuel	(21,994)	(75,251)
Proceeds from sale of nuclear fuel	24,976	11,257
Change in money pool receivable - net	76,391	18,606
Increase in other investments	(4)	0
Proceeds from nuclear decommissioning trust fund sales	60,067	62,717
Investment in nuclear decommissioning trust funds	(66,551)	(67,669)
Net cash flow used in investing activities	48,231	(94,802)
Payments for (Proceeds from) Other Investing Activities	4	0
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	473,687	225,956
Retirement of long-term debt	(232,016)	(162,111)
Dividends paid:
Net cash flow provided by financing activities	241,671	63,845
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	257,063	9,054
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	260,003	98,255
Cash paid / (received) during the period for:
Interest - net of amount capitalized	$ 11,304	$ 9,749