Summary Of Significant Accounting Policies (Schedule Of Net Property, Plant, And Equipment) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) MW	Dec. 31, 2020 USD ($)
Public Utility, Property, Plant and Equipment [Line Items]
Transmission	$ 9,578,000	$ 8,758,000
Distribution	12,877,000	10,805,000
Net Book Value	64,263,250	59,696,443
Construction work in progress	1,511,966	2,012,030
Nuclear fuel	577,000	601,000
Property, plant and equipment - net	42,244,160	38,852,777
Entergy Arkansas [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Transmission	2,065,000	2,053,000
Distribution	2,801,000	2,666,000
Net Book Value	13,578,297	12,905,322
Construction work in progress	241,127	234,213
Nuclear fuel	182,000	163,000
Property, plant and equipment - net	$ 8,529,183	8,047,224
Entergy Arkansas [Member] | Independence Unit 1 [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Coal
Total Megawatt Capability | MW	822
Ownership	31.50%
Investment	$ 143,000
Accumulated Depreciation	$ 106,000
Entergy Arkansas [Member] | Independence Common Facilities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Coal
Ownership	15.75%
Investment	$ 43,000
Accumulated Depreciation	$ 31,000
Entergy Arkansas [Member] | White Bluff Units 1 And 2 [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Coal
Total Megawatt Capability | MW	1,639
Ownership	57.00%
Investment	$ 587,000
Accumulated Depreciation	$ 390,000
Entergy Arkansas [Member] | Ouachita Common Facilities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Gas
Ownership	66.67%
Investment	$ 173,000
Accumulated Depreciation	$ 156,000
Entergy Arkansas [Member] | Union Common Facilities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Gas
Ownership	25.00%
Investment	$ 29,000
Accumulated Depreciation	9,000
Entergy Louisiana [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Transmission	4,237,000	3,756,000
Distribution	5,629,000	4,130,000
Net Book Value	28,055,038	25,619,789
Construction work in progress	847,924	667,281
Nuclear fuel	209,000	210,000
Property, plant and equipment - net	$ 19,537,134	17,387,718
Entergy Louisiana [Member] | Ouachita Common Facilities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Gas
Ownership	33.33%
Investment	$ 91,000
Accumulated Depreciation	$ 78,000
Entergy Louisiana [Member] | Union Common Facilities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Gas
Ownership	50.00%
Investment	$ 59,000
Accumulated Depreciation	$ 10,000
Entergy Louisiana [Member] | Roy S. Nelson Unit 6 [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Coal
Total Megawatt Capability | MW	521
Ownership	40.25%
Investment	$ 294,000
Accumulated Depreciation	$ 212,000
Entergy Louisiana [Member] | Roy S. Nelson Unit 6 Common Facilities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Coal
Ownership	19.57%
Investment	$ 21,000
Accumulated Depreciation	$ 10,000
Entergy Louisiana [Member] | Big Cajun 2 Unit 3 [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Coal
Total Megawatt Capability | MW	540
Ownership	24.15%
Investment	$ 151,000
Accumulated Depreciation	$ 131,000
Entergy Louisiana [Member] | Big Cajun 2 Unit 3 Common Facilities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Coal
Ownership	8.05%
Investment	$ 5,000
Accumulated Depreciation	$ 3,000
Entergy Louisiana [Member] | Acadia Common Facilities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Gas
Ownership	50.00%
Investment	$ 21,000
Accumulated Depreciation	2,000
Entergy Mississippi [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Transmission	1,383,000	1,235,000
Distribution	1,879,000	1,651,000
Net Book Value	6,613,109	6,084,730
Construction work in progress	95,452	134,854
Nuclear fuel	0	0
Property, plant and equipment - net	$ 4,580,971	4,214,497
Entergy Mississippi [Member] | Independence Units 1 And 2 And Common Facilities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Coal
Total Megawatt Capability | MW	1,246
Ownership	25.00%
Investment	$ 286,000
Accumulated Depreciation	179,000
Entergy New Orleans [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Transmission	114,000	111,000
Distribution	702,000	576,000
Net Book Value	1,976,202	1,821,638
Construction work in progress	22,199	12,460
Nuclear fuel	0	0
Property, plant and equipment - net	$ 1,598,075	1,441,326
Entergy New Orleans [Member] | Union Common Facilities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Gas
Ownership	25.00%
Investment	$ 29,000
Accumulated Depreciation	8,000
Entergy Texas [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Transmission	1,743,000	1,566,000
Distribution	1,866,000	1,782,000
Net Book Value	7,181,567	6,007,687
Construction work in progress	183,965	879,908
Nuclear fuel	0	0
Property, plant and equipment - net	$ 5,315,782	5,023,101
Entergy Texas [Member] | Roy S. Nelson Unit 6 [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Coal
Total Megawatt Capability | MW	521
Ownership	29.75%
Investment	$ 208,000
Accumulated Depreciation	$ 120,000
Entergy Texas [Member] | Roy S. Nelson Unit 6 Common Facilities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Coal
Ownership	14.47%
Investment	$ 7,000
Accumulated Depreciation	$ 3,000
Entergy Texas [Member] | Big Cajun 2 Unit 3 [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Coal
Total Megawatt Capability | MW	540
Ownership	17.85%
Investment	$ 113,000
Accumulated Depreciation	$ 84,000
Entergy Texas [Member] | Big Cajun 2 Unit 3 Common Facilities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Coal
Ownership	5.95%
Investment	$ 4,000
Accumulated Depreciation	$ 1,000
Entergy Texas [Member] | Montgomery County Power Station
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Gas
Total Megawatt Capability | MW	909
Ownership	92.44%
Investment	$ 728,000
Accumulated Depreciation	18,000
System Energy [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Transmission	35,000	37,000
Distribution	0	0
Net Book Value	5,362,494	5,309,458
Construction work in progress	97,968	59,831
Nuclear fuel	171,000	175,000
Property, plant and equipment - net	$ 2,235,764	2,188,927
Ownership	90.00%
System Energy [Member] | Grand Gulf Unit 1 [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Nuclear
Total Megawatt Capability | MW	1,404
Ownership	90.00%
Investment	$ 5,363,000
Accumulated Depreciation	3,317,000
Utility [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Transmission	9,577,000	8,758,000
Distribution	12,877,000	10,805,000
Construction work in progress	1,511,000	2,008,000
Nuclear fuel	563,000	548,000
Property, plant and equipment - net	42,162,000	38,674,000
Entergy Wholesale Commodities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Transmission	1,000	0
Distribution	0	0
Construction work in progress	1,000	4,000
Nuclear fuel	14,000	53,000
Property, plant and equipment - net	$ 77,000	171,000
Entergy Wholesale Commodities [Member] | Independence Common Facilities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Coal
Ownership	7.18%
Investment	$ 20,000
Accumulated Depreciation	$ 14,000
Entergy Wholesale Commodities [Member] | Roy S. Nelson Unit 6 [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Coal
Total Megawatt Capability | MW	521
Ownership	10.90%
Investment	$ 118,000
Accumulated Depreciation	$ 69,000
Entergy Wholesale Commodities [Member] | Roy S. Nelson Unit 6 Common Facilities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Coal
Ownership	5.30%
Investment	$ 3,000
Accumulated Depreciation	$ 1,000
Entergy Wholesale Commodities [Member] | Independence Unit 2 [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Jointly Owned Utility Plant Fuel Type	Coal
Total Megawatt Capability | MW	424
Ownership	14.37%
Investment	$ 76,000
Accumulated Depreciation	55,000
Parent & Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Transmission	0	0
Distribution	0	0
Construction work in progress	0	0
Nuclear fuel	0	0
Property, plant and equipment - net	5,000	7,000
Nuclear Plant [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	7,632,000	7,526,000
Nuclear Plant [Member] | Entergy Arkansas [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	1,775,000	1,622,000
Nuclear Plant [Member] | Entergy Louisiana [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	3,941,000	3,980,000
Nuclear Plant [Member] | Entergy Mississippi [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	0	0
Nuclear Plant [Member] | Entergy New Orleans [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	0	0
Nuclear Plant [Member] | Entergy Texas [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	0	0
Nuclear Plant [Member] | System Energy [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	1,908,000	1,891,000
Nuclear Plant [Member] | Utility [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	7,624,000	7,493,000
Nuclear Plant [Member] | Entergy Wholesale Commodities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	8,000	33,000
Nuclear Plant [Member] | Parent & Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	0	0
Other Plant In Service [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	7,158,000	6,346,000
Net Book Value	2,910,000	2,804,000
Other Plant In Service [Member] | Entergy Arkansas [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	931,000	803,000
Net Book Value	534,000	506,000
Other Plant In Service [Member] | Entergy Louisiana [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	3,631,000	3,660,000
Net Book Value	1,042,000	984,000
Other Plant In Service [Member] | Entergy Mississippi [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	882,000	868,000
Net Book Value	342,000	325,000
Other Plant In Service [Member] | Entergy New Orleans [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	411,000	416,000
Net Book Value	349,000	326,000
Other Plant In Service [Member] | Entergy Texas [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	1,250,000	523,000
Net Book Value	273,000	273,000
Other Plant In Service [Member] | System Energy [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	0	0
Net Book Value	24,000	26,000
Other Plant In Service [Member] | Utility [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	7,105,000	6,270,000
Net Book Value	2,905,000	2,792,000
Other Plant In Service [Member] | Entergy Wholesale Commodities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	53,000	76,000
Net Book Value	0	5,000
Other Plant In Service [Member] | Parent & Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	0	0
Net Book Value	$ 5,000	$ 7,000