Consolidated Statements Of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	$ 2,877,925	$ 2,844,838
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	666,938	501,167
Nuclear refueling outage expenses	43,002	43,739
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	678,812	706,786
Asset Impairment Charges	744	3,273
Decommissioning	62,048	98,642
Taxes, Other	180,148	156,702
Other Depreciation and Amortization	438,972	414,519
Other regulatory charges (credits) - net	(28,425)	32,279
Costs and Expenses	2,311,865	2,336,841
OPERATING INCOME	566,060	507,997
OTHER INCOME
Allowance for equity funds used during construction	15,871	14,577
Investment Income, Net	(21,918)	143,315
Miscellaneous - net	7,603	(60,929)
TOTAL	1,556	96,963
INTEREST EXPENSE
Interest Expense, Debt	227,622	205,886
Allowance for borrowed funds used during construction	(6,096)	(6,013)
TOTAL	221,526	199,873
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	346,090	405,087
Income taxes	66,497	65,942
Consolidated net income	279,593	339,145
Net Income (Loss) Attributable to Noncontrolling Interest, Preferred Unit Holders	$ 3,193	$ 4,580
Earnings per average common share:
Basic (in dollars per share)	$ 1.36	$ 1.67
Diluted (in dollars per share)	$ 1.36	$ 1.66
Basic average number of common shares outstanding (in shares)	202,943,628	200,525,549
Diluted average number of common shares outstanding (in shares)	203,888,483	201,059,665
Net Income (Loss) Available to Common Stockholders, Basic	$ 276,400	$ 334,565
Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	2,655,776	2,538,420
Natural Gas, US Regulated [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	72,361	58,168
Competitive Businesses [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	149,788	248,250
Electricity, Purchased [Member]
Operation and Maintenance:
Cost of Goods and Services Sold	269,626	379,734
Entergy Mississippi [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	349,029	336,619
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	67,277	60,197
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	65,811	67,831
Taxes, Other	32,730	25,899
Other Depreciation and Amortization	60,084	55,036
Other regulatory charges (credits) - net	3,907	8,129
Costs and Expenses	291,021	285,683
OPERATING INCOME	58,008	50,936
OTHER INCOME
Allowance for equity funds used during construction	1,078	1,668
Investment Income, Net	64	42
Miscellaneous - net	(1,153)	(2,313)
TOTAL	(11)	(603)
INTEREST EXPENSE
Interest Expense, Debt	20,434	17,613
Allowance for borrowed funds used during construction	(465)	(677)
TOTAL	19,969	16,936
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	38,028	33,397
Income taxes	7,673	7,425
Consolidated net income	30,355	25,972
Entergy Mississippi [Member] | Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	349,029	336,619
Entergy Mississippi [Member] | Natural Gas, US Regulated [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	0	0
Entergy Mississippi [Member] | Electricity, Purchased [Member]
Operation and Maintenance:
Cost of Goods and Services Sold	61,212	68,591
Entergy Arkansas [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	558,956	583,386
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	86,225	126,181
Nuclear refueling outage expenses	14,070	12,647
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	157,257	154,908
Decommissioning	20,129	19,000
Taxes, Other	33,202	29,743
Other Depreciation and Amortization	95,610	88,279
Other regulatory charges (credits) - net	(20,542)	(37,467)
Costs and Expenses	443,422	463,512
OPERATING INCOME	115,534	119,874
OTHER INCOME
Allowance for equity funds used during construction	3,055	2,993
Investment Income, Net	6,320	27,887
Miscellaneous - net	(5,392)	(5,791)
TOTAL	3,983	25,089
INTEREST EXPENSE
Interest Expense, Debt	36,047	33,786
Allowance for borrowed funds used during construction	(1,214)	(1,290)
TOTAL	34,833	32,496
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	84,684	112,467
Income taxes	19,117	19,430
Consolidated net income	65,567	93,037
Net Income (Loss) Attributable to Noncontrolling Interest, Preferred Unit Holders	(1,387)	0
Earnings per average common share:
Net Income (Loss) Available to Common Stockholders, Basic	66,954	93,037
Entergy Arkansas [Member] | Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	558,956	583,386
Entergy Arkansas [Member] | Natural Gas, US Regulated [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	0	0
Entergy Arkansas [Member] | Electricity, Purchased [Member]
Operation and Maintenance:
Cost of Goods and Services Sold	57,471	70,221
Entergy Louisiana [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	1,265,972	1,107,644
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	362,074	145,234
Nuclear refueling outage expenses	11,947	13,282
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	254,001	237,483
Decommissioning	17,688	16,823
Taxes, Other	61,615	52,484
Other Depreciation and Amortization	169,083	160,813
Other regulatory charges (credits) - net	(20,897)	31,097
Costs and Expenses	1,031,708	867,177
OPERATING INCOME	234,264	240,467
OTHER INCOME
Allowance for equity funds used during construction	6,726	6,101
Investment Income, Net	15,900	72,515
Miscellaneous - net	15,517	(34,638)
TOTAL	38,143	43,978
INTEREST EXPENSE
Interest Expense, Debt	93,784	82,806
Allowance for borrowed funds used during construction	(3,026)	(2,759)
TOTAL	90,758	80,047
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	181,649	204,398
Income taxes	30,789	37,772
Consolidated net income	150,860	166,626
Earnings per average common share:
Net Income (Loss) Available to Common Stockholders, Basic	150,860	166,626
Entergy Louisiana [Member] | Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	1,237,237	1,079,663
Entergy Louisiana [Member] | Natural Gas, US Regulated [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	28,735	27,981
Entergy Louisiana [Member] | Electricity, Purchased [Member]
Operation and Maintenance:
Cost of Goods and Services Sold	176,197	209,961
Entergy New Orleans [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	198,272	169,335
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	43,397	19,012
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	33,652	38,178
Taxes, Other	13,989	12,556
Other Depreciation and Amortization	19,815	18,161
Other regulatory charges (credits) - net	4,185	3,130
Costs and Expenses	171,508	159,707
OPERATING INCOME	26,764	9,628
OTHER INCOME
Allowance for equity funds used during construction	369	258
Investment Income, Net	24	9
Miscellaneous - net	(271)	(302)
TOTAL	122	(35)
INTEREST EXPENSE
Interest Expense, Debt	8,694	7,029
Allowance for borrowed funds used during construction	(199)	(116)
TOTAL	8,495	6,913
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	18,391	2,680
Income taxes	3,265	909
Consolidated net income	15,126	1,771
Entergy New Orleans [Member] | Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	154,646	139,148
Entergy New Orleans [Member] | Natural Gas, US Regulated [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	43,626	30,187
Entergy New Orleans [Member] | Electricity, Purchased [Member]
Operation and Maintenance:
Cost of Goods and Services Sold	56,470	68,670
Entergy Texas [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	472,482	480,220
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	73,920	112,396
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	74,977	62,955
Taxes, Other	20,449	21,875
Other Depreciation and Amortization	56,061	50,936
Other regulatory charges (credits) - net	13,446	15,840
Costs and Expenses	399,943	405,364
OPERATING INCOME	72,539	74,856
OTHER INCOME
Allowance for equity funds used during construction	2,596	2,445
Investment Income, Net	188	224
Miscellaneous - net	307	(423)
TOTAL	3,091	2,246
INTEREST EXPENSE
Interest Expense, Debt	20,912	23,038
Allowance for borrowed funds used during construction	(865)	(984)
TOTAL	20,047	22,054
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	55,583	55,048
Income taxes	5,180	4,990
Consolidated net income	50,403	50,058
Net Income (Loss) Attributable to Noncontrolling Interest, Preferred Unit Holders	518	470
Earnings per average common share:
Net Income (Loss) Available to Common Stockholders, Basic	49,885	49,588
Entergy Texas [Member] | Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	472,482	480,220
Entergy Texas [Member] | Natural Gas, US Regulated [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	0	0
Entergy Texas [Member] | Electricity, Purchased [Member]
Operation and Maintenance:
Cost of Goods and Services Sold	161,090	141,362
System Energy [Member]
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	7,923	16,859
Nuclear refueling outage expenses	5,927	6,718
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	43,904	41,960
Decommissioning	9,917	9,529
Taxes, Other	7,851	6,825
Other Depreciation and Amortization	29,923	28,194
Other regulatory charges (credits) - net	(8,524)	11,550
Costs and Expenses	96,921	121,635
OPERATING INCOME	44,455	(3,889)
OTHER INCOME
Allowance for equity funds used during construction	2,047	1,111
Investment Income, Net	5,232	27,442
Miscellaneous - net	(1,639)	(2,024)
TOTAL	5,640	26,529
INTEREST EXPENSE
Interest Expense, Debt	9,481	9,535
Allowance for borrowed funds used during construction	(327)	(188)
TOTAL	9,154	9,347
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	40,941	13,293
Income taxes	9,509	(10,571)
Consolidated net income	31,432	23,864
Earnings per average common share:
Net Income (Loss) Available to Common Stockholders, Basic	31,432	23,864
System Energy [Member] | Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	$ 141,376	$ 117,746