Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Proceeds from Sale of Productive Assets	$ 0	$ 19,801
OPERATING ACTIVITIES
Consolidated net income	488,406	499,180
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	1,131,212	1,068,807
Deferred income taxes, investment tax credits, and non-current taxes accrued	68,332	225,749
Impairment of Long-Lived Assets Held-for-use	11,735	26,684
Changes in working capital:
Receivables	(30,990)	(127,259)
Fuel inventory	(19,897)	(13,346)
Accounts payable	(39,054)	(18,832)
Taxes accrued	44,469	(38,186)
Interest accrued	4,188	(144)
Deferred fuel costs	33,298	31,796
Other working capital accounts	(63,943)	(51,782)
Changes in provisions for estimated losses	(37,968)	4,719
Changes in other regulatory assets	74,610	(135,936)
Increase (Decrease) in Regulatory Liabilities	(164,158)	107,882
Changes in pension and other postretirement liabilities	(177,224)	(66,033)
Other Noncash Income (Expense)	125,291	(460,209)
Net cash flow provided by operating activities	1,448,307	1,053,090
INVESTING ACTIVITIES
Construction/capital expenditures	(2,185,294)	(2,095,520)
Allowance for equity funds used during construction	64,324	75,607
Nuclear fuel purchases	(113,592)	(54,523)
Payments for Nuclear Fuel	(113,592)	(54,523)
Payments to storm reserve escrow account	(1,965)	(4,623)
Receipts from storm reserve escrow account	40,589	0
Decrease in other investments	2,262	51,073
Litigation proceeds for reimbursement of spent nuclear fuel storage costs	67,252	0
Proceeds from nuclear decommissioning trust fund sales	1,249,548	2,487,915
Investment in nuclear decommissioning trust funds	(1,309,209)	(2,523,805)
Proceeds from insurance	0	7,040
Changes in securitization account	12,525	12,034
Net cash flow used in investing activities	(2,198,193)	(2,025,001)
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	5,201,010	5,391,547
Proceeds from Sale of Treasury Stock	41,753	57,797
Proceeds from Issuance of Common Stock	0	607,650
Retirement of long-term debt	(3,592,919)	(4,214,495)
Payments for Repurchase of Preferred Stock and Preference Stock	0	50,000
Changes in credit borrowings and commercial paper - net	(508)	(306,877)
Dividends paid:
Common stock	(371,914)	(345,452)
Preferred stock		(8,219)
Other	(8,448)	(5,106)
Net cash flow provided by financing activities	1,259,632	1,126,845
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	509,746	154,934
Cash and cash equivalents at beginning of period	425,722	480,975
Cash and cash equivalents at end of period	935,468	635,909
Cash paid / (received) during the period for:
Interest - net of amount capitalized	405,248	388,566
Income taxes	(10,007)	(6,967)
Payments to Acquire Buildings	(24,633)	0
Dividends Paid, Preferred Stock	(9,342)
Entergy Arkansas [Member]
OPERATING ACTIVITIES
Consolidated net income	104,765	89,420
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	243,126	231,968
Deferred income taxes, investment tax credits, and non-current taxes accrued	24,970	45,680
Changes in working capital:
Receivables	(10,360)	4,920
Fuel inventory	(12,704)	(4,707)
Accounts payable	(34,009)	(14,280)
Taxes accrued	(409)	(19,961)
Interest accrued	119	4,155
Deferred fuel costs	16,322	56,182
Other working capital accounts	(23,858)	23,275
Changes in provisions for estimated losses	998	11,619
Changes in other regulatory assets	(26,191)	(57,516)
Increase (Decrease) in Regulatory Liabilities	(50,637)	70,958
Changes in pension and other postretirement liabilities	(419)	(12,487)
Other Noncash Income (Expense)	55,318	(75,672)
Net cash flow provided by operating activities	287,031	353,554
INVESTING ACTIVITIES
Construction/capital expenditures	(406,940)	(309,696)
Allowance for equity funds used during construction	6,795	6,964
Change in money pool receivable - net	0	(25,166)
Nuclear fuel purchases	(57,781)	(6,691)
Payments for Nuclear Fuel	(57,781)	(6,691)
Proceeds from sale of nuclear fuel	18,107	22,834
Litigation proceeds for reimbursement of spent nuclear fuel storage costs	55,001	0
Proceeds from nuclear decommissioning trust fund sales	183,474	83,407
Investment in nuclear decommissioning trust funds	(194,776)	(93,516)
Changes in securitization account	1,244	834
Net cash flow used in investing activities	(400,864)	(321,030)
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	335,902	659,913
Retirement of long-term debt	(226,366)	(361,823)
Change in money pool payable - net	4,231	(182,738)
Dividends paid:
Common stock	0	(115,000)
Other	(880)	(1,052)
Net cash flow provided by financing activities	112,887	(700)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	(946)	31,824
Cash and cash equivalents at beginning of period	3,519	119
Cash and cash equivalents at end of period	2,573	31,943
Cash paid / (received) during the period for:
Interest - net of amount capitalized	69,276	62,486
Payments to Acquire Buildings	(5,988)	0
Entergy Louisiana [Member]
OPERATING ACTIVITIES
Consolidated net income	359,855	310,717
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	392,286	316,343
Deferred income taxes, investment tax credits, and non-current taxes accrued	(1,353)	99,015
Changes in working capital:
Receivables	(38,175)	(75,330)
Fuel inventory	(2,233)	(1,651)
Accounts payable	(37,576)	(25,686)
Taxes accrued	91,662	46,654
Interest accrued	3,689	1,918
Deferred fuel costs	(763)	(40,096)
Other working capital accounts	(13,069)	(64,715)
Changes in provisions for estimated losses	(38,621)	1,612
Changes in other regulatory assets	48,536	(88,911)
Increase (Decrease) in Regulatory Liabilities	(42,203)	26,565
Changes in pension and other postretirement liabilities	(34,280)	(7,513)
Other Noncash Income (Expense)	39,034	(25,702)
Net cash flow provided by operating activities	726,789	473,220
INVESTING ACTIVITIES
Construction/capital expenditures	(690,049)	(900,264)
Allowance for equity funds used during construction	20,942	44,585
Change in money pool receivable - net	(87,635)	9,633
Nuclear fuel purchases	(24,086)	(63,026)
Payments for Nuclear Fuel	(24,086)	(63,026)
Proceeds from sale of nuclear fuel	35,041	0
Payments to storm reserve escrow account	(1,398)	(3,382)
Receipts from storm reserve escrow account	40,589	0
Litigation proceeds for reimbursement of spent nuclear fuel storage costs	5,090	0
Proceeds from nuclear decommissioning trust fund sales	223,736	195,433
Investment in nuclear decommissioning trust funds	(240,559)	(211,083)
Proceeds from insurance	0	7,040
Changes in securitization account	755	406
Net cash flow used in investing activities	(732,085)	(920,658)
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	1,401,887	1,883,990
Retirement of long-term debt	(826,456)	(1,332,807)
Change in money pool payable - net	(82,826)	0
Dividends paid:
Common stock	(16,500)	(102,000)
Other	(9,080)	(370)
Net cash flow provided by financing activities	467,025	448,813
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	461,729	1,375
Cash and cash equivalents at beginning of period	2,006	43,364
Cash and cash equivalents at end of period	463,735	44,739
Cash paid / (received) during the period for:
Interest - net of amount capitalized	157,926	146,256
Income taxes	(20,684)	0
Payments to Acquire Buildings	(14,511)	0
Entergy Mississippi [Member]
OPERATING ACTIVITIES
Consolidated net income	61,419	42,065
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	103,451	78,806
Deferred income taxes, investment tax credits, and non-current taxes accrued	13,126	19,924
Changes in working capital:
Receivables	7,076	(6,288)
Fuel inventory	(5,747)	(4,265)
Accounts payable	9,943	4,545
Taxes accrued	(34,195)	(46,815)
Interest accrued	1,399	2,022
Deferred fuel costs	(2,840)	26,126
Other working capital accounts	135	1,850
Changes in provisions for estimated losses	(1,782)	(6,274)
Changes in other regulatory assets	(28,290)	(13,248)
Increase (Decrease) in Regulatory Liabilities	(11,548)	(17,754)
Changes in pension and other postretirement liabilities	(5,353)	(3,323)
Other Noncash Income (Expense)	5,628	(6,402)
Net cash flow provided by operating activities	112,422	70,969
INVESTING ACTIVITIES
Construction/capital expenditures	(267,231)	(210,263)
Allowance for equity funds used during construction	3,027	4,262
Change in money pool receivable - net	31,382	(65,380)
Decrease in other investments	(163)	(310)
Net cash flow used in investing activities	(261,597)	(271,691)
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	165,408	293,051
Dividends paid:
Common stock	(2,500)	0
Other	4,850	(4,835)
Net cash flow provided by financing activities	167,758	288,216
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	18,583	87,494
Cash and cash equivalents at beginning of period	51,601	36,954
Cash and cash equivalents at end of period	70,184	124,448
Cash paid / (received) during the period for:
Interest - net of amount capitalized	31,196	26,563
Payments to Acquire Buildings	(28,612)	0
Entergy New Orleans [Member]
OPERATING ACTIVITIES
Consolidated net income	16,115	22,026
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	30,701	28,390
Deferred income taxes, investment tax credits, and non-current taxes accrued	1,228	15,053
Changes in working capital:
Receivables	5,255	(9,614)
Fuel inventory	1,042	(336)
Accounts payable	(1,725)	(3,412)
Taxes accrued	1,887	(6,189)
Interest accrued	529	(289)
Deferred fuel costs	3,351	2,028
Other working capital accounts	(19,793)	(13,204)
Changes in provisions for estimated losses	1,521	399
Changes in other regulatory assets	3,508	(16,470)
Increase (Decrease) in Regulatory Liabilities	(14,151)	(8,574)
Changes in pension and other postretirement liabilities	(7,523)	(3,627)
Other Noncash Income (Expense)	2,715	23,184
Net cash flow provided by operating activities	24,660	29,365
INVESTING ACTIVITIES
Construction/capital expenditures	(114,961)	(105,545)
Allowance for equity funds used during construction	4,533	4,976
Change in money pool receivable - net	(586)	22,016
Payments to storm reserve escrow account	(405)	(931)
Changes in securitization account	451	768
Net cash flow used in investing activities	(112,552)	(78,716)
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	138,939	0
Retirement of long-term debt	(25,616)	(5,420)
Change in money pool payable - net	0	36,303
Dividends paid:
Other	(703)	(910)
Net cash flow provided by financing activities	112,620	29,973
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	24,728	(19,378)
Cash and cash equivalents at beginning of period	6,017	19,677
Cash and cash equivalents at end of period	30,745	299
Cash paid / (received) during the period for:
Interest - net of amount capitalized	13,132	11,726
Income taxes	3,332	0
Payments to Acquire Buildings	(1,584)	0
Entergy Texas [Member]
OPERATING ACTIVITIES
Consolidated net income	79,575	60,278
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	86,401	74,349
Deferred income taxes, investment tax credits, and non-current taxes accrued	9,470	8,895
Changes in working capital:
Receivables	(20,524)	25,236
Fuel inventory	1,222	(589)
Accounts payable	(3,543)	(15,596)
Taxes accrued	(11,390)	(9,091)
Interest accrued	359	(7,787)
Deferred fuel costs	17,226	(12,445)
Other working capital accounts	9,928	1,998
Changes in provisions for estimated losses	91	(3,294)
Changes in other regulatory assets	50,347	28,742
Increase (Decrease) in Regulatory Liabilities	(23,947)	(50,817)
Changes in pension and other postretirement liabilities	(13,825)	(3,899)
Other Noncash Income (Expense)	(10,842)	10,897
Net cash flow provided by operating activities	170,548	106,877
INVESTING ACTIVITIES
Construction/capital expenditures	(495,560)	(424,229)
Allowance for equity funds used during construction	22,242	11,551
Change in money pool receivable - net	3,379	0
Changes in securitization account	10,075	10,027
Net cash flow used in investing activities	(464,795)	(402,651)
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	194,256	691,808
Retirement of long-term debt	(43,376)	(541,442)
Change in money pool payable - net	0	146,275
Dividends paid:
Preferred stock	(1,124)	0
Other	(1,199)	924
Net cash flow provided by financing activities	323,557	297,565
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	29,310	1,791
Cash and cash equivalents at beginning of period	12,929	56
Cash and cash equivalents at end of period	42,239	1,847
Cash paid / (received) during the period for:
Interest - net of amount capitalized	44,683	49,229
Income taxes	4,031	2,292
Proceeds from Contributions from Parent	175,000	0
Payments to Acquire Buildings	(4,931)	0
System Energy [Member]
OPERATING ACTIVITIES
Consolidated net income	57,504	48,050
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	88,343	106,972
Deferred income taxes, investment tax credits, and non-current taxes accrued	517	4,799
Changes in working capital:
Receivables	18,213	(15,402)
Accounts payable	(18,591)	(6,770)
Taxes accrued	6,020	(3,196)
Interest accrued	(12)	(1,275)
Other working capital accounts	(41,850)	1,205
Changes in other regulatory assets	(21,072)	(7,238)
Increase (Decrease) in Regulatory Liabilities	(21,672)	87,502
Changes in pension and other postretirement liabilities	(5,354)	(2,121)
Other Noncash Income (Expense)	22,690	(82,150)
Net cash flow provided by operating activities	84,736	130,376
INVESTING ACTIVITIES
Construction/capital expenditures	(147,889)	(58,714)
Allowance for equity funds used during construction	6,784	3,267
Change in money pool receivable - net	59,298	35,588
Nuclear fuel purchases	(75,024)	(1,964)
Payments for Nuclear Fuel	(75,024)	(1,964)
Proceeds from sale of nuclear fuel	9,573	18,280
Proceeds from nuclear decommissioning trust fund sales	275,563	190,975
Investment in nuclear decommissioning trust funds	(286,018)	(200,909)
Net cash flow used in investing activities	(157,713)	(13,477)
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	482,533	847,380
Retirement of long-term debt	(434,104)	(888,003)
Change in money pool payable - net	15,774	0
Dividends paid:
Common stock	(59,653)	(88,000)
Net cash flow provided by financing activities	4,550	(128,623)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	(68,427)	(11,724)
Cash and cash equivalents at beginning of period	68,534	95,685
Cash and cash equivalents at end of period	107	83,961
Cash paid / (received) during the period for:
Interest - net of amount capitalized	8,589	12,462
Income taxes	$ (4,000)	$ 0