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Long - Term Debt (Schedule Of Long-term Debt Instruments) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Sep. 30, 2011
Aug. 31, 2010
Debt Instrument [Line Items]        
Unamortized Premium and Discount - Net $ (8,273) $ 3,665    
Unamortized Debt Issuance Expense (177,904) (160,420)    
Other 5,528 5,575    
Total Long-Term Debt 25,880,901 22,369,776    
Long-term Debt, Current Maturities 1,039,329 1,164,015    
Long-term Debt, Excluding Current Maturities 24,841,572 21,205,761    
Fair Value of Long-Term Debt 27,061,171 24,813,818    
Entergy Mississippi [Member]        
Debt Instrument [Line Items]        
Unamortized Premium and Discount - Net 5,853 3,685    
Unamortized Debt Issuance Expense (20,864) (18,108)    
Total Long-Term Debt 2,179,989 1,780,577    
Long-term Debt, Current Maturities 0 0    
Long-term Debt, Excluding Current Maturities 2,179,989 1,780,577    
Fair Value of Long-Term Debt 2,346,230 2,021,432    
Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Unamortized Premium and Discount - Net 2,776 6,938    
Unamortized Debt Issuance Expense (32,803) (30,638)    
Other 1,974 1,989    
Total Long-Term Debt 3,958,862 3,967,507    
Long-term Debt, Current Maturities 0 485,000    
Long-term Debt, Excluding Current Maturities 3,958,862 3,482,507    
Fair Value of Long-Term Debt 4,176,577 4,355,632    
Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Unamortized Premium and Discount - Net (7,523) (2,863)    
Unamortized Debt Issuance Expense (67,665) (61,132)    
Other 3,554 3,586    
Total Long-Term Debt 10,914,346 9,027,451    
Long-term Debt, Current Maturities 200,000 240,000    
Long-term Debt, Excluding Current Maturities 10,714,346 8,787,451    
Fair Value of Long-Term Debt 11,492,650 10,258,294    
Entergy New Orleans [Member]        
Debt Instrument [Line Items]        
Unamortized Premium and Discount - Net (58) (91)    
Unamortized Debt Issuance Expense (8,665) (8,055)    
Total Long-Term Debt 788,165 642,233    
Notes Payable, Related Parties, Current 1,326 1,618    
Long-term Debt, Excluding Current Maturities 777,254 629,704    
Long Term Debt Excluding Amount Due Within One Year 786,839 640,615    
Fair Value of Long-Term Debt 765,538 620,634    
Long-term debt and notes payable related parties, current   1,618    
Entergy Texas [Member]        
Debt Instrument [Line Items]        
Unamortized Premium and Discount - Net 13,556 14,064    
Unamortized Debt Issuance Expense (18,665) (19,048)    
Total Long-Term Debt 2,354,148 2,493,708    
Long-term Debt, Current Maturities 0 200,000    
Long-term Debt, Excluding Current Maturities 2,354,148 2,293,708    
Fair Value of Long-Term Debt 2,483,995 2,765,193    
System Energy [Member]        
Debt Instrument [Line Items]        
Unamortized Premium and Discount - Net (108) (165)    
Unamortized Debt Issuance Expense (3,017) (2,897)    
Total Long-Term Debt 741,296 805,274    
Long-term Debt, Current Maturities 50,329 100,015    
Long-term Debt, Excluding Current Maturities 690,967 705,259    
Fair Value of Long-Term Debt $ 743,040 840,540    
Mortgage Bonds Current 2018-2022 [Member]        
Debt Instrument [Line Items]        
Weighted Average Interest Rate 2.70%      
Long-term Debt, Gross $ 5,228,000 $ 4,978,000    
Mortgage Bonds Current 2018-2022 [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 0.62% 0.62%    
Mortgage Bonds Current 2018-2022 [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 5.59% 5.59%    
Mortgage Bonds 2023-2027 [Member]        
Debt Instrument [Line Items]        
Weighted Average Interest Rate 3.13%      
Long-term Debt, Gross $ 3,965,000 $ 3,835,000    
Mortgage Bonds 2023-2027 [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.50% 1.60%    
Mortgage Bonds 2023-2027 [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.44% 4.44%    
Mortgage Bonds 2028-2031 [Member]        
Debt Instrument [Line Items]        
Weighted Average Interest Rate 3.31%      
Long-term Debt, Gross $ 3,612,000 $ 2,252,000    
Mortgage Bonds 2028-2031 [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.75% 1.75%    
Mortgage Bonds 2028-2031 [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.52% 4.52%    
Mortgage Bonds 2044-2066 [Member]        
Debt Instrument [Line Items]        
Weighted Average Interest Rate 4.06%      
Long-term Debt, Gross $ 6,980,000 $ 6,380,000    
Mortgage Bonds 2044-2066 [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.65% 2.65%    
Mortgage Bonds 2044-2066 [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 5.50% 5.50%    
Mortgage Bonds 2.40% Series Due October 2026 [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.40%      
Long-term Debt, Gross $ 400,000 $ 400,000    
Mortgage Bonds, 2.55% Series Due June 2021 [Member] | Entergy Texas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.55%      
Long-term Debt, Gross $ 0 125,000    
Mortgage Bonds 2.85% Series Due June 2028 [Member] | Entergy Mississippi [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.85%      
Long-term Debt, Gross $ 375,000 375,000    
Mortgage Bonds 4.52% Series Due December 2038 [Member] | Entergy Mississippi [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.52%      
Long-term Debt, Gross $ 55,000 55,000    
Mortgage bonds, 3.85% Series due June 2049 [Member] | Entergy Mississippi [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.85%      
Long-term Debt, Gross $ 435,000 435,000    
Mortgage Bonds Three Point Zero Five Percent Series Due June Two Thousand Thirty One [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.05%      
Long-term Debt, Gross $ 325,000 325,000    
Mortgage Bonds 4.0% Series Due March 2033 [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.00%      
Long-term Debt, Gross $ 750,000 750,000    
Mortgage Bonds, 3.05% Series, Due June 2023 [Member] | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.05%      
Long-term Debt, Gross $ 250,000 250,000    
Mortgage Bonds, 3.1% Series, Due July 2023 [Member] | Entergy Mississippi [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.10%      
Long-term Debt, Gross $ 250,000 250,000    
Mortgage Bonds, 3.12% Series, Due September 2027 [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.12%      
Long-term Debt, Gross $ 450,000 450,000    
Mortgage Bonds, 3.25% Series, Due April 2028 [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.25%      
Long-term Debt, Gross $ 425,000 425,000    
Mortgage Bonds, 3.25% Series, Due December 2027 [Member] | Entergy Mississippi [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.25%      
Long-term Debt, Gross $ 150,000 150,000    
Mortgage Bonds, 3.3% Series, Due December 2022 [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.30%      
Long-term Debt, Gross $ 200,000 200,000    
Three Point Five Percent Series First Mortgage Bonds Due April Two Thousand Twenty Six [Member] | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.50%      
Long-term Debt, Gross $ 600,000 600,000    
4.0% Series First Mortgage Bonds Due June 2028 [Member] | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.00%      
Long-term Debt, Gross $ 350,000 350,000    
Mortgage Bonds, 3.75% Series, Due February 2021 [Member] | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.75%      
Long-term Debt, Gross $ 0 350,000    
Mortgage Bonds, 3.75% Series, Due July 2024 [Member] | Entergy Mississippi [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.75%      
Long-term Debt, Gross $ 100,000 100,000    
Mortgage Bonds 3.7% Series, Due June 2024 [Member] | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.70%      
Long-term Debt, Gross $ 375,000 375,000    
Mortgage Bonds, 3.78% Series, Due April 2025 [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.78%      
Long-term Debt, Gross $ 110,000 110,000    
Mortgage Bonds, 3.78 % Series Due April 2025 (Legacy) [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.78%      
Long-term Debt, Gross $ 190,000 190,000    
Mortgage Bonds, 3.9% Series, Due July 2023 [Member] | Entergy New Orleans [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.90%      
Long-term Debt, Gross $ 100,000 100,000    
Mortgage Bonds, 4.0% Series, Due June 2026 [Member] | Entergy New Orleans [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.00%      
Long-term Debt, Gross $ 85,000 85,000    
Mortgage Bonds, 4.51% Series Due September 2033 [Member] | Entergy New Orleans [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.51%      
Long-term Debt, Gross $ 60,000 60,000    
Mortgage Bonds, 4.05% Series, Due September 2023 [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.05%      
Long-term Debt, Gross $ 325,000 325,000    
Mortgage Bonds, Four Point Nine Zero Percent Series, Due October Two Thousand Sixty Six [Member] | Entergy Mississippi [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.90%      
Long-term Debt, Gross $ 260,000 260,000    
Mortgage Bonds, 4.1% Series, Due April 2023 [Member] | System Energy [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.10%      
Long-term Debt, Gross $ 250,000 250,000    
Mortgage Bonds, 4.1% Series, Due September 2021 [Member] | Entergy Texas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.10%      
Long-term Debt, Gross $ 0 75,000    
Mortgage Bonds 3.45% Series Due December 2027 [Member] | Entergy Texas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.45%      
Long-term Debt, Gross $ 150,000 150,000    
4.0% Series First Mortgage Bonds Due March 2029 [Member] | Entergy Texas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.00%      
Long-term Debt, Gross $ 300,000 300,000    
4.50% Series First Mortgage Bonds Due March 2039 [Member] | Entergy Texas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.50%      
Long-term Debt, Gross $ 400,000 400,000    
Mortgage Bonds, 4.44% Series, Due January 2026 [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.44%      
Long-term Debt, Gross $ 250,000 250,000    
Mortgage Bonds, 4.8% Series, Due May 2021 [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.80%      
Long-term Debt, Gross $ 0 200,000    
Four Point Eight Seven Five Percent Series First Mortgage Bonds Due September Two Thousand Sixty Six [Member] | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.875%      
Long-term Debt, Gross $ 410,000 410,000    
Four Point Eight Seven Five Percent Series First Mortgage Bonds Due September Two Thousand Sixty Six [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.875%      
Long-term Debt, Gross $ 270,000 270,000    
Mortgage Bonds, 4.95% Series, Due December 2044 [Member] | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.95%      
Long-term Debt, Gross $ 250,000 250,000    
Mortgage Bonds Four Point Two Percent Series Due April 2049 [Member] | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.20%      
Long-term Debt, Gross $ 350,000 350,000    
Mortgage Bonds, 4.95% Series, Due January 2045 [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.95%      
Long-term Debt, Gross $ 450,000 450,000    
Mortgage Bonds, 4.2% Series, Due September 2048 [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.20%      
Long-term Debt, Gross $ 900,000 900,000    
Mortgage Bonds, Four Point Two Zero Percent Series due April Twenty Fifty [Member] [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.20%      
Long-term Debt, Gross $ 525,000 525,000    
Mortgage Bonds, 5.0% Series, Due July 2044 [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 5.00%      
Long-term Debt, Gross $ 170,000 170,000    
Mortgage Bonds, 5.0% Series, Due December 2052 [Member] | Entergy New Orleans [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 5.00%      
Long-term Debt, Gross $ 30,000 30,000    
Mortgage Bonds Five Point One Five Percent Series Due June Two Thousand Forty Five [Member] | Entergy Texas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 5.15%      
Long-term Debt, Gross $ 250,000 250,000    
Mortgage Bonds 3.55% Series Due September 2049 [Member] | Entergy Texas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.55%      
Long-term Debt, Gross $ 475,000 475,000    
Mortgage Bonds, 5.40% Series, Due November 2024 [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 5.40%      
Long-term Debt, Gross $ 400,000 400,000    
Mortgage Bonds, 5.5% Series, Due April 2066 [Member] | Entergy New Orleans [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 5.50%      
Long-term Debt, Gross $ 110,000 110,000    
Mortgage Bonds, 5.59% Series, Due October 2024 [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 5.59%      
Long-term Debt, Gross $ 300,000 300,000    
Mortgage Bonds [Member] | Entergy Mississippi [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross 2,195,000 1,795,000    
Mortgage Bonds [Member] | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross 3,660,000 3,610,000    
Mortgage Bonds [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross 10,490,000 8,690,000    
Mortgage Bonds [Member] | Entergy New Orleans [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross 685,000 525,000    
Mortgage Bonds [Member] | Entergy Texas [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross 2,305,000 2,375,000    
Mortgage Bonds [Member] | System Energy [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross $ 450,000 450,000    
Governmental Bonds 2017-2022 [Member]        
Debt Instrument [Line Items]        
Weighted Average Interest Rate 2.43%      
Long-term Debt, Gross $ 332,680 $ 377,680    
Governmental Bonds 2017-2022 [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.00% 2.375%    
Governmental Bonds 2017-2022 [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.50% 3.50%    
Governmental Bonds Two Point Three Seven Five Percent Series Due Two Thousand Twenty One Independence County [Member] | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.375%      
Long-term Debt, Gross $ 0 $ 45,000    
Governmental Bonds, 3.50% Series, Due 2030, Louisiana Public Facilities Authority [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.50%      
Long-term Debt, Gross $ 0 115,000    
Governmental Bonds 2.5% Percent Series Due 2022 Mississippi Business Finance Corporation [Member] | System Energy [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.50%      
Long-term Debt, Gross $ 50,305 134,000    
Governmental Bonds, 3.375% Series, Due 2028, Louisiana Public Facilities Authority [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.375%      
Long-term Debt, Gross $ 0 83,680    
Governmental Bonds [Member] | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross 0 45,000    
Governmental Bonds [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross 198,680 198,680    
Governmental Bonds [Member] | System Energy [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross $ 134,000 134,000    
Securitization Bonds 2018-2027 [Member]        
Debt Instrument [Line Items]        
Weighted Average Interest Rate 3.31%      
Long-term Debt, Gross $ 85,234 $ 177,522    
Securitization Bonds 2018-2027 [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.67% 2.04%    
Securitization Bonds 2018-2027 [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.38% 5.93%    
VIE Notes Payable 2017-2023 [Member]        
Debt Instrument [Line Items]        
Weighted Average Interest Rate 2.21%      
Long-term Debt, Gross $ 310,000 $ 450,000    
VIE Notes Payable 2017-2023 [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.84% 2.05%    
VIE Notes Payable 2017-2023 [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.22% 3.92%    
Variable Interest Entity Notes Payable, 3.17% Series M, Due December 2023 [Member] | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.17%      
Long-term Debt, Gross $ 40,000 $ 40,000    
Variable Interest Entity Notes Payable, 3.22 % Series I, Due December 2023 [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.22%      
Long-term Debt, Gross $ 20,000 20,000    
Variable Interest Entity Notes Payable, 3.65% Series L, Due July 2021 [Member] | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.65%      
Long-term Debt, Gross $ 0 90,000    
Variable Interest Entity Notes Payable, 3.42% Series J Due April 2021 [Member] | System Energy [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.42%      
Long-term Debt, Gross $ 0 100,000    
Variable Interest Entity Notes Payable, Three Point Ninety Two Percent Series H Due February Two Thousand Twenty One [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.92%      
Long-term Debt, Gross $ 0 40,000    
Variable Interest Entity Notes Payable [Member] | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross 134,800 142,200    
Variable Interest Entity Notes Payable [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross 172,300 188,200    
Variable Interest Entity Notes Payable [Member] | System Energy [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross $ 126,100 190,000    
Securitization Bonds, 2.04% Series Senior Secured, Due September 2023 [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.04%   2.04%  
Long-term Debt, Gross $ 0 10,980    
Securitization Bonds, 2.30% Series Senior Secured, Due August 2021 [Member] | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage       2.30%
Securitization Bonds, 2.67% Series Senior Secured, Due June 2024 [Member] | Entergy New Orleans [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.67%      
Long-term Debt, Gross $ 30,977 42,850    
Securitization Bonds, 4.38% Series Senior Secured, Due November 2023 [Member] | Entergy Texas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.38%      
Long-term Debt, Gross $ 54,257 106,214    
Securitization Bonds, 5.93% Series Senior Secured, Series A, Due June 2022 [Member] | Entergy Texas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 5.93%      
Long-term Debt, Gross $ 0 17,478    
Securitization Bonds [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross 0 10,980    
Securitization Bonds [Member] | Entergy New Orleans [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross 30,977 42,850    
Securitization Bonds [Member] | Entergy Texas [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross $ 54,257 $ 123,692    
3.0% Unsecured Term Loan due May 2022 [Member] | Entergy New Orleans [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 0.00% 3.00%    
Long-term Debt, Gross $ 0 $ 70,000    
Entergy Corporation Notes Due July Two Thousand Twenty Two [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.00% 4.00%    
Long-term Debt, Gross $ 650,000 $ 650,000    
Entergy Corporation Notes Due September Two Thousand Twenty Six [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.95% 2.95%    
Long-term Debt, Gross $ 750,000 $ 750,000    
Vermont Yankee Credit Facility [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.67% 2.46%    
Long-term Debt, Gross $ 139,000 $ 139,000    
5 Year Credit Facility [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.60% 2.35%    
Long-term Debt, Gross $ 165,000 $ 165,000    
Entergy Arkansas VIE Credit Facility [Member] | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.17% 1.94%    
Long-term Debt, Gross $ 4,800 $ 12,200    
Entergy Louisiana River Bend VIE Credit Facility [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.15% 1.95%    
Long-term Debt, Gross $ 42,700 $ 18,900    
Entergy Louisiana Waterford VIE Credit Facility [Member] | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.16% 1.72%    
Long-term Debt, Gross $ 39,600 $ 39,300    
System Energy VIE Credit Facility [Member] | System Energy [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.16% 1.63%    
Long-term Debt, Gross $ 36,100 $ 0    
Long-Term DOE Obligation [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 0.00% 0.00%    
Long-term Debt, Gross $ 192,115 $ 192,018    
Long-Term DOE Obligation [Member] | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross $ 192,115 $ 192,018    
Grand Gulf Lease Obligation [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 0.00% 0.00%    
Long-term Debt, Gross $ 34,321 $ 34,336    
Grand Gulf Lease Obligation, 5.13% [Member] | System Energy [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross 34,321 34,336    
Payable to Entergy Louisiana due November 2035 [Member] | Entergy New Orleans [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross $ 10,911 $ 12,529    
Entergy Corporation Notes Due September Two Thousand Twenty Five        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 0.90% 0.90%    
Long-term Debt, Gross $ 800,000 $ 800,000    
Entergy Corporation Notes Due June Twenty Thirty        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.80% 2.80%    
Long-term Debt, Gross $ 600,000 $ 600,000    
Entergy Corporation Notes Due June Twenty Fifty        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.75% 3.75%    
Long-term Debt, Gross $ 600,000 $ 600,000    
Mortgage Bonds Two Point Six Five Percent Series DueJune 2051 | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.65%      
Long-term Debt, Gross $ 675,000 675,000    
Mortgage Bonds Zero Point Six Two Percent Series Due November Two Thousand Twenty Three | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 0.62%      
Long-term Debt, Gross $ 1,100,000 1,100,000    
Mortgage Bonds, One Point Six Percent Series, Due December Twenty Thirty | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.60%      
Long-term Debt, Gross $ 300,000 300,000    
Mortgage Bonds, Two Point Nine Percent Series due March Twenty Fifty One | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.90%      
Long-term Debt, Gross $ 650,000 650,000    
Variable Interest Entity Notes Payable, Two Point Five One Percent Series V, Due June Twenty Twenty Seven | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.51%      
Long-term Debt, Gross $ 70,000 70,000    
Mortgage bonds, 3.50% Series due June 2051 | Entergy Mississippi [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.50%      
Long-term Debt, Gross $ 370,000 170,000    
Mortgage Bonds Three Percent Series Due March Twenty Twenty Five | Entergy New Orleans [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.00%      
Long-term Debt, Gross $ 78,000 78,000    
Mortgage Bonds, 3.75% Series Due March Twenty Forty | Entergy New Orleans [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.75%      
Long-term Debt, Gross $ 62,000 62,000    
1.75% Series First Mortgage Bonds Due March Twenty Thirty One | Entergy Texas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.75%      
Long-term Debt, Gross $ 600,000 600,000    
Mortgage Bonds 2.14% Series Due December Twenty Twenty Five | System Energy [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.14%      
Long-term Debt, Gross $ 200,000 200,000    
Variable Interest Entity Notes Payable, 2.05% Series K Due September Twenty Twenty Seven | System Energy [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.05%      
Long-term Debt, Gross $ 90,000 $ 90,000    
Entergy Corporation Notes due June Twenty Twenty Eight        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.90% 0.00%    
Long-term Debt, Gross $ 650,000 $ 0    
Entergy Corporation Notes due June Twenty Thirty One        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.40% 0.00%    
Long-term Debt, Gross $ 650,000 $ 0    
Variance Interest Entity notes Payable, 1.84% Series N, Due July 2026 | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.84%      
Long-term Debt, Gross $ 90,000 0    
Mortgage Bonds 0.95% Series due October 2024 | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 0.95%      
Long-term Debt, Gross $ 1,000,000 $ 0    
2.5% Unsecured Term Loan due May 2023 | Entergy New Orleans [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.50% 0.00%    
Long-term Debt, Gross $ 70,000 $ 0    
Mortgage Bonds 2.35% Series Due June 2032 | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.35%      
Long-term Debt, Gross $ 500,000 0    
Mortgage Bonds 3.10% Series Due June 2041 | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.10%      
Long-term Debt, Gross $ 500,000 0    
Governmental Bonds, 2.0%, Due 2030, Louisiana Public Facilities Authority | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.00%      
Long-term Debt, Gross $ 16,200 0    
Governmental Bonds, 2.50% Series, Due 2030, Louisiana Public Facilities Authority | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.50%      
Long-term Debt, Gross $ 182,480 0    
Mortgage Bonds 2.55% Series Due December 2033 | Entergy Mississippi [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.55%      
Long-term Debt, Gross $ 200,000 0    
Mortgage Bonds, 4.19%, Due November 2031 | Entergy New Orleans [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.19%      
Long-term Debt, Gross $ 90,000 0    
Mortgage Bonds, 4.51%, Due November 2036 | Entergy New Orleans [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.51%      
Long-term Debt, Gross $ 70,000 0    
Mortgage Bonds 1.5% Series Due September 2026 | Entergy Texas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.50%      
Long-term Debt, Gross $ 130,000 0    
Governmental Bonds 2.375% Series Due 2044 Mississippi Business Finance Corporation | System Energy [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.375%      
Long-term Debt, Gross $ 83,695 $ 0    
Entergy Louisiana Credit Facility        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.32% 0.00%    
Long-term Debt, Gross $ 125,000 $ 0    
Entergy Louisiana Credit Facility | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.32%      
Long-term Debt, Gross $ 125,000 0    
Mortgage Bonds 3.35% Series Due June 2052 | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.35%      
Long-term Debt, Gross $ 400,000 0    
Credit Facility due June 2024, weighted avg rate 1.17% | Entergy Arkansas [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.17%      
Long-term Debt, Gross $ 4,800 12,200    
Credit Facility due June 2024, weighted avg rate 1.15% | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.15%      
Long-term Debt, Gross $ 42,700 18,900    
Credit Facility due June 2024, weighted avg rate 1.16% | Entergy Louisiana [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.16%      
Long-term Debt, Gross $ 39,600 39,300    
Credit Facility due June 2024, weighted avg rate 1.16% | System Energy [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.16%      
Long-term Debt, Gross $ 36,100 $ 0