Summary Of Significant Accounting Policies (Schedule Of Net Property, Plant, And Equipment) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) MW	Dec. 31, 2021 USD ($)
Public Utility, Property, Plant and Equipment [Line Items]
Transmission	$ 9,590,000	$ 9,578,000
Distribution	12,363,000	12,877,000
Net Book Value	64,646,911	64,263,250
Construction work in progress	1,844,171	1,511,966
Nuclear fuel	582,000	577,000
Property, plant and equipment - net	42,477,124	42,244,160
Entergy Arkansas [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Transmission	2,086,000	2,065,000
Distribution	2,981,000	2,801,000
Net Book Value	14,077,844	13,578,297
Construction work in progress	417,244	241,127
Nuclear fuel	176,000	182,000
Property, plant and equipment - net	$ 8,941,958	8,529,183
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	821
Ownership	31.50%
Investment	$ 144,000
Accumulated Depreciation	$ 107,000
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	1,638
Ownership	57.00%
Investment	$ 592,000
Accumulated Depreciation	$ 397,000
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	$ 157,000
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	10,000
Entergy Louisiana [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Transmission	4,055,000	4,237,000
Distribution	4,827,000	5,629,000
Net Book Value	27,498,136	28,055,038
Construction work in progress	736,969	847,924
Nuclear fuel	213,000	209,000
Property, plant and equipment - net	$ 18,661,823	19,537,134
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	$ 58,000
Accumulated Depreciation	$ 12,000
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	518
Ownership	40.25%
Investment	$ 299,000
Accumulated Depreciation	$ 216,000
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	22.73%
Investment	$ 22,000
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	$ 149,000
Accumulated Depreciation	$ 133,000
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	$ 22,000
Accumulated Depreciation	2,000
Entergy Mississippi [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Transmission	1,435,000	1,383,000
Distribution	2,035,000	1,879,000
Net Book Value	7,079,849	6,613,109
Construction work in progress	170,191	95,452
Nuclear fuel	0	0
Property, plant and equipment - net	$ 4,985,254	4,580,971
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	1,242
Ownership	25.00%
Investment	$ 292,000
Accumulated Depreciation	185,000
Entergy New Orleans [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Transmission	131,000	114,000
Distribution	625,000	702,000
Net Book Value	1,934,837	1,976,202
Construction work in progress	39,607	22,199
Nuclear fuel	0	0
Property, plant and equipment - net	$ 1,556,472	1,598,075
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	9,000
Entergy Texas [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Transmission	1,846,000	1,743,000
Distribution	1,895,000	1,866,000
Net Book Value	7,409,461	7,181,567
Construction work in progress	339,139	183,965
Nuclear fuel	0	0
Property, plant and equipment - net	$ 5,613,200	5,315,782
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	518
Ownership	29.75%
Investment	$ 211,000
Accumulated Depreciation	$ 122,000
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	16.80%
Investment	$ 8,000
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	$ 111,000
Accumulated Depreciation	$ 86,000
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	903
Ownership	92.44%
Investment	$ 744,000
Accumulated Depreciation	37,000
System Energy [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Transmission	34,000	35,000
Distribution	0	0
Net Book Value	5,425,449	5,362,494
Construction work in progress	102,987	97,968
Nuclear fuel	193,000	171,000
Property, plant and equipment - net	$ 2,309,183	2,235,764
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	1,400
Ownership	90.00%
Investment	$ 5,427,000
Accumulated Depreciation	3,356,000
Utility [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Transmission	9,587,000	9,577,000
Distribution	12,363,000	12,877,000
Construction work in progress	1,843,000	1,511,000
Nuclear fuel	582,000	563,000
Property, plant and equipment - net	42,415,000	42,162,000
Entergy Wholesale Commodities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Transmission	3,000	1,000
Distribution	0	0
Construction work in progress	1,000	1,000
Nuclear fuel	0	14,000
Property, plant and equipment - net	$ 57,000	77,000
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	$ 21,000
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	518
Ownership	10.90%
Investment	$ 120,000
Accumulated Depreciation	$ 71,000
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	6.15%
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	421
Ownership	14.37%
Investment	$ 79,000
Accumulated Depreciation	57,000
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	5,000
Nuclear Plant [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	7,936,000	7,632,000
Nuclear Plant [Member] | Entergy Arkansas [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	1,858,000	1,775,000
Nuclear Plant [Member] | Entergy Louisiana [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	4,116,000	3,941,000
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	1,962,000	1,908,000
Nuclear Plant [Member] | Utility [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	7,936,000	7,624,000
Nuclear Plant [Member] | Entergy Wholesale Commodities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	0	8,000
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	7,256,000	7,158,000
Net Book Value	2,906,000	2,910,000
Other Plant In Service [Member] | Entergy Arkansas [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	916,000	931,000
Net Book Value	508,000	534,000
Other Plant In Service [Member] | Entergy Louisiana [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	3,652,000	3,631,000
Net Book Value	1,062,000	1,042,000
Other Plant In Service [Member] | Entergy Mississippi [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	988,000	882,000
Net Book Value	357,000	342,000
Other Plant In Service [Member] | Entergy New Orleans [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	403,000	411,000
Net Book Value	357,000	349,000
Other Plant In Service [Member] | Entergy Texas [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	1,244,000	1,250,000
Net Book Value	289,000	273,000
Other Plant In Service [Member] | System Energy [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	0	0
Net Book Value	17,000	24,000
Other Plant In Service [Member] | Utility [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	7,203,000	7,105,000
Net Book Value	2,901,000	2,905,000
Other Plant In Service [Member] | Entergy Wholesale Commodities [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	53,000	53,000
Net Book Value	0	0
Other Plant In Service [Member] | Parent & Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Production	0	0
Net Book Value	$ 5,000	$ 5,000