Long - Term Debt (Schedule Of Long-term Debt Instruments) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Unamortized Premium and Discount - Net	$ (10,744,000)	$ (9,531,000)
Other	14,454,000	16,523,000
Total Long-Term Debt	12,638,834,000	12,236,446,000
Less Amount Due Within One Year	718,516,000	2,192,733,000
Long Term Debt Excluding Amount Due Within One Year	11,920,318,000	10,043,713,000
Fair Value of Long-Term Debt	12,849,330,000	12,176,251,000
Parent Company [Member]
Debt Instrument [Line Items]
Value of note payable to NYPA excluded from fair value of long-term debt calculation.	110,000,000
Entergy Arkansas [Member]
Debt Instrument [Line Items]
Unamortized Premium and Discount - Net	(655,000)	(733,000)
Other	2,118,000	2,131,000
Total Long-Term Debt	2,123,895,000	1,875,921,000
Less Amount Due Within One Year	330,000,000	0
Long Term Debt Excluding Amount Due Within One Year	1,793,895,000	1,875,921,000
Fair Value of Long-Term Debt	1,876,335,000	1,756,361,000
Value of DOE obligation excluded from fair value of long-term debt calculation.	181,000,000
Entergy Gulf States Louisiana [Member]
Debt Instrument [Line Items]
Unamortized Premium and Discount - Net	(1,810,000)	(2,048,000)
Other	3,604,000	3,603,000
Total Long-Term Debt	1,517,429,000	1,542,430,000
Less Amount Due Within One Year	75,000,000	60,000,000
Long Term Debt Excluding Amount Due Within One Year	1,442,429,000	1,482,430,000
Fair Value of Long-Term Debt	1,668,819,000	1,642,388,000
Entergy Louisiana [Member]
Debt Instrument [Line Items]
Unamortized Premium and Discount - Net	(2,230,000)	(1,912,000)
Other	3,792,000	3,813,000
Total Long-Term Debt	2,826,095,000	2,252,312,000
Less Amount Due Within One Year	14,236,000	75,309,000
Long Term Debt Excluding Amount Due Within One Year	2,811,859,000	2,177,003,000
Fair Value of Long-Term Debt	2,921,322,000	2,211,355,000
Value of lease obligation excluded from fair value of long-term debt calculation.	163,000,000
Entergy Mississippi [Member]
Debt Instrument [Line Items]
Unamortized Premium and Discount - Net	(1,511,000)	(591,000)
Total Long-Term Debt	1,169,519,000	920,439,000
Less Amount Due Within One Year	100,000,000	0
Long Term Debt Excluding Amount Due Within One Year	1,069,519,000	920,439,000
Fair Value of Long-Term Debt	1,230,714,000	985,600,000
Entergy New Orleans [Member]
Debt Instrument [Line Items]
Unamortized Premium and Discount - Net	(45,000)	(57,000)
Total Long-Term Debt	196,300,000	166,537,000
Less Amount Due Within One Year	70,000,000	0
Long Term Debt Excluding Amount Due Within One Year	126,300,000	166,537,000
Fair Value of Long-Term Debt	200,725,000	169,270,000
Entergy Texas [Member]
Debt Instrument [Line Items]
Unamortized Premium and Discount - Net	(2,653,000)	(3,103,000)
Other	4,889,000	5,331,000
Total Long-Term Debt	1,617,813,000	1,677,127,000
Long Term Debt Excluding Amount Due Within One Year	1,617,813,000	1,677,127,000
Fair Value of Long-Term Debt	1,885,672,000	1,906,081,000
System Energy [Member]
Debt Instrument [Line Items]
Unamortized Premium and Discount - Net	(1,096,000)	(714,000)
Other	2,000	3,000
Total Long-Term Debt	783,799,000	747,048,000
Less Amount Due Within One Year	111,854,000	110,163,000
Long Term Debt Excluding Amount Due Within One Year	671,945,000	636,885,000
Fair Value of Long-Term Debt	664,670,000	582,952,000
Value of lease obligation excluded from fair value of long-term debt calculation.	139,000,000
Mortgage Bonds 2012-2017 [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	3.24%
Interest Rate Range, Minimum	1.88%	3.25%
Interest Rate Range, Maximum	5.40%	6.20%
Total Long-Term Debt	1,045,000,000	865,000,000
Mortgage Bonds 2018-2022 [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	5.15%
Interest Rate Range, Minimum	3.30%	3.75%
Interest Rate Range, Maximum	7.13%	7.13%
Outstanding	2,635,000,000	2,435,000,000
Mortgage Bonds 2023-2027 [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	4.82%
Interest Rate Range, Minimum	3.10%	4.44%
Interest Rate Range, Maximum	5.66%	5.66%
Outstanding	1,658,369,000	1,158,449,000
Mortgage Bonds 2028-2037 [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	6.18%
Interest Rate Range, Minimum	5.65%	5.65%
Interest Rate Range, Maximum	6.40%	6.40%
Outstanding	867,976,000	868,145,000
Mortgage Bonds 2039-2052 [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	6.22%
Interest Rate Range, Minimum	4.90%	5.75%
Interest Rate Range, Maximum	7.88%	7.88%
Outstanding	1,335,000,000	905,000,000
Mortgage Bonds, 5.40% Series, Due August 2013 [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Interest Rate	5.40%
Outstanding	300,000,000	300,000,000
Mortgage Bonds, 5.0% Series, Due July 2018 [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Interest Rate	5.00%
Outstanding	115,000,000	115,000,000
Mortgage Bonds, 3.75% Series, Due February 2021 [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Interest Rate	3.75%
Outstanding	350,000,000	350,000,000
Mortgage Bonds, 5.66% Series, Due February 2025 [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Interest Rate	5.66%
Outstanding	175,000,000	175,000,000
Mortgage Bonds, 5.9% Series, Due June 2033 [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Interest Rate	5.90%
Outstanding	100,000,000	100,000,000
Mortgage Bonds, 6.38% Series, Due November 2034 [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Interest Rate	6.38%
Outstanding	60,000,000	60,000,000
Mortgage Bonds, 5.75% Series, Due November 2040 [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Interest Rate	5.75%
Outstanding	225,000,000	225,000,000
Mortgage Bonds, Four Point Nine Percent Series, Due DecemberTwenty Fifty Two [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Outstanding	200,000,000
Mortgage Bonds, 6.0% Series, Due May 2018 [Member] | Entergy Gulf States Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	6.00%
Outstanding	375,000,000	375,000,000
Mortgage Bonds, 3.95% Series, Due October 2020 [Member] | Entergy Gulf States Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	3.95%
Outstanding	250,000,000	250,000,000
Mortgage Bonds, 5.59% Series, Due October 2024 [Member] | Entergy Gulf States Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	5.59%
Outstanding	300,000,000	300,000,000
Mortgage Bonds, 6.2% Series, Due July 2033 [Member] | Entergy Gulf States Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	6.20%
Outstanding	240,000,000	240,000,000
Mortgage Bonds, 6.18% Series, Due March 2035 [Member] | Entergy Gulf States Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	6.18%
Outstanding	85,000,000	85,000,000
Mortgage Bonds, One Point Eight Seven Five Percent Series, Due December Two Thousand Fourteen [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Outstanding	250,000,000
Mortgage Bonds, 6.50%, Due September 2018 [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	6.50%
Outstanding	300,000,000	300,000,000
Mortgage Bonds, 4.8% Series, Due May 2021 [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	4.80%
Outstanding	200,000,000	200,000,000
Mortgage Bonds, Three Point Three Percent Series, Due December Two Thousand Twenty Two [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Outstanding	200,000,000
Mortgage Bonds, 5.40% Series, Due November 2024 [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	5.40%
Outstanding	400,000,000	400,000,000
Mortgage Bonds, 4.44% Series, Due January 2026 [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	4.44%
Outstanding	250,000,000	250,000,000
Mortgage Bonds, 6.4% Series, Due October 2034 [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	6.40%
Outstanding	70,000,000	70,000,000
Mortgage Bonds, 6.3% Series, Due September 2035 [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	6.30%
Outstanding	100,000,000	100,000,000
Mortgage Bonds, 6.0% Series, Due March 2040 [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	6.00%
Outstanding	150,000,000	150,000,000
Mortgage Bonds, 5.875% Series, Due June 2041 [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	5.875%
Outstanding	150,000,000	150,000,000
Mortgage Bonds, Five Point Two Five Percent Series, Due July Two Thousand Fifty Two [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Outstanding	200,000,000
Mortgage Bonds, 5.15% Series, Due February 2013 [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Interest Rate	5.15%
Outstanding	100,000,000	100,000,000
Mortgage Bonds, 3.25% Series, Due June 2016 [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Interest Rate	3.25%
Outstanding	125,000,000	125,000,000
Mortgage Bonds, 4.95% Series, Due June 2018 [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Interest Rate	4.95%
Outstanding	95,000,000	95,000,000
Mortgage Bonds, 6.64% Series, Due July 2019 [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Interest Rate	6.64%
Outstanding	150,000,000	150,000,000
Mortgage Bonds, Three Point One Percent Series, Due July Two Thousand Twenty Three [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Outstanding	250,000,000
Mortgage Bonds, 6.0% Series, Due November 2032 [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Interest Rate	6.00%
Outstanding	75,000,000	75,000,000
Mortgage Bonds, 6.25% Series, Due April 2034 [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Interest Rate	6.25%
Outstanding	100,000,000	100,000,000
Mortgage Bonds, 6.20% Series, Due April 2040 [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Interest Rate	6.20%
Outstanding	80,000,000	80,000,000
Mortgage Bonds, 6.0% Series, Due May 2051 [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Interest Rate	6.00%
Outstanding	150,000,000	150,000,000
Mortgage Bonds, 5.25% Series, Due August 2013 [Member] | Entergy New Orleans [Member]
Debt Instrument [Line Items]
Interest Rate	5.25%
Outstanding	70,000,000	70,000,000
Mortgage Bonds, 5.10% Series, Due December 2020 [Member] | Entergy New Orleans [Member]
Debt Instrument [Line Items]
Interest Rate	5.10%
Outstanding	25,000,000	25,000,000
Mortgage Bonds, 5.6% Series, Due September 2024 [Member] | Entergy New Orleans [Member]
Debt Instrument [Line Items]
Interest Rate	5.60%
Outstanding	33,369,000	33,449,000
Mortgage Bonds, 5.65% Series, Due September 2029 [Member] | Entergy New Orleans [Member]
Debt Instrument [Line Items]
Interest Rate	5.65%
Outstanding	37,976,000	38,145,000
Mortgage Bonds, 5.0% Series, Due December Two Thousand Fifty Two [Member] | Entergy New Orleans [Member]
Debt Instrument [Line Items]
Outstanding	30,000,000
Mortgage Bonds, 3.60% Series, Due June 2015 [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Interest Rate	3.60%
Outstanding	200,000,000	200,000,000
Mortgage Bonds, 7.125% Series, Due February 2019 [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Interest Rate	7.125%
Outstanding	500,000,000	500,000,000
Mortgage Bonds, 4.1% Series, Due September 2021 [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Interest Rate	4.10%
Outstanding	75,000,000	75,000,000
Mortgage Bonds, 7.875% Series, Due June 2039 [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Interest Rate	7.875%
Outstanding	150,000,000	150,000,000
Mortgage Bonds, 6.2% Series, Due October 2012 [Member] | System Energy [Member]
Debt Instrument [Line Items]
Interest Rate	6.20%
Outstanding		70,000,000
Mortgage Bonds, 4.1% Series, Due April Two Thousand Twenty Three[Member] | System Energy [Member]
Debt Instrument [Line Items]
Outstanding	250,000,000
Mortgage Bonds [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Outstanding	1,525,000,000	1,325,000,000
Mortgage Bonds [Member] | Entergy Gulf States Louisiana [Member]
Debt Instrument [Line Items]
Outstanding	1,250,000,000	1,250,000,000
Mortgage Bonds [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Outstanding	2,270,000,000	1,620,000,000
Mortgage Bonds [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Outstanding	1,125,000,000	875,000,000
Mortgage Bonds [Member] | Entergy New Orleans [Member]
Debt Instrument [Line Items]
Outstanding	196,345,000	166,594,000
Mortgage Bonds [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Outstanding	925,000,000	925,000,000
Mortgage Bonds [Member] | System Energy [Member]
Debt Instrument [Line Items]
Outstanding	250,000,000	70,000,000
Governmental Bonds 2012-2017 [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	4.15%
Interest Rate Range, Minimum	2.88%	2.88%
Interest Rate Range, Maximum	4.60%	5.80%
Outstanding	86,655,000	97,495,000
Governmental Bonds 2018-2022 [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	5.59%
Interest Rate Range, Minimum	4.60%	4.60%
Interest Rate Range, Maximum	5.88%	5.90%
Outstanding	307,030,000	410,005,000
Governmental Bonds 2023-2030 [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	5.00%
Interest Rate Range, Minimum		5.00%
Interest Rate Range, Maximum	5.00%	6.20%
Outstanding	198,680,000	248,680,000
Governmental Bonds 2022-2026 [Member]
Debt Instrument [Line Items]
Interest Rate Range, Minimum		5.00%
Governmental Bonds, 4.6% Series, Due 2017, Jefferson County [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Interest Rate	4.60%
Outstanding	54,700,000	54,700,000
Governmental Bonds, 5.0% Series, Due 2021, Independence County [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Interest Rate	5.00%
Outstanding	45,000,000	45,000,000
Governmental Bonds, 2.875% Series, Due 2015, Louisiana Public Facilities Authority [Member] | Entergy Gulf States Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	2.875%
Outstanding	31,955,000	31,955,000
Governmental Bonds, 5.8% Series, Due 2016, West Feliciana Parish [Member] | Entergy Gulf States Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	5.80%
Outstanding		10,840,000
Governmental Bonds, 5.0% Series, Due 2028, Louisiana Public Facilities Autority [Member] | Entergy Gulf States Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	5.00%
Outstanding	83,680,000	83,680,000
Governmental Bonds, 5.0% Series, Due 2030, Louisiana Public Facilities Authority [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	5.00%
Outstanding	115,000,000	115,000,000
Governmental Bonds, 4.60% Series, Due 2022, Mississippi Business Finance Corp. [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Interest Rate	4.60%
Outstanding	16,030,000	16,030,000
Governmental Bonds, 4.90% Series, Due 2022, Independence County [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Interest Rate	4.90%
Outstanding	30,000,000	30,000,000
Governmental Bonds, 5.875% Series, Due 2022, Mississippi Business Finance Corp. [Member] | System Energy [Member]
Debt Instrument [Line Items]
Interest Rate	5.875%
Outstanding	216,000,000	216,000,000
Governmental Bonds, 5.9% Series, Due 2022, Mississippi Business Finance Corp. [Member] | System Energy [Member]
Debt Instrument [Line Items]
Interest Rate	5.90%
Outstanding		102,975,000
Governmental Bonds, 6.2% Series, Due 2026, Claiborne County [Member] | System Energy [Member]
Debt Instrument [Line Items]
Interest Rate	6.20%
Outstanding		50,000,000
Governmental Bonds [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Outstanding	99,700,000	99,700,000
Governmental Bonds [Member] | Entergy Gulf States Louisiana [Member]
Debt Instrument [Line Items]
Outstanding	115,635,000	126,475,000
Governmental Bonds [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Outstanding	115,000,000	115,000,000
Governmental Bonds [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Outstanding	46,030,000	46,030,000
Governmental Bonds [Member] | System Energy [Member]
Debt Instrument [Line Items]
Outstanding	216,000,000	368,975,000
Securitization Bonds 2013-2020 [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	4.18%
Interest Rate Range, Minimum	2.12%	2.12%
Interest Rate Range, Maximum	5.79%	5.79%
Outstanding	357,577,000	416,899,000
Securitization Bonds 2021-2023 [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	3.74%
Interest Rate Range, Minimum	2.04%	2.04%
Interest Rate Range, Maximum	5.93%	5.93%
Outstanding	616,159,000	653,948,000
VIE Notes Payable 2012-2017 [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	3.85%
Interest Rate Range, Minimum	2.62%	2.25%
Interest Rate Range, Maximum	9.00%	9.00%
Outstanding	640,000,000	519,400,000
Variable Interest Entity Notes Payable, 9% Series H, Due June 2013 [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Interest Rate	9.00%
Outstanding	30,000,000	30,000,000
Variable Interest Entity Notes Payable, 5.69% Series I, Due July 2014 [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Interest Rate	5.69%
Outstanding	70,000,000	70,000,000
Variable Interest Entity Notes Payable, 3.23% Percent Series J, Due July 2016 [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Interest Rate	3.23%
Outstanding	55,000,000	55,000,000
Variable Interest Entity Notes Payable, Two Point Six Two Percent Series K, Due December Two Thousand Seventeen [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Outstanding	60,000,000
Variable Interest Entity Notes Payable, 5.41% Series O, Due July 2012 [Member] | Entergy Gulf States Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	5.41%
Outstanding		60,000,000
Variable Interest Entity Notes Payable, 5.56% Series N, Due May 2013 [Member] | Entergy Gulf States Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	5.56%
Outstanding	75,000,000	75,000,000
Variable Interest Entity Notes Payable, Three Point Two Five Percent Series Q, Due July Two Thousand Seventeen [Member] | Entergy Gulf States Louisiana [Member]
Debt Instrument [Line Items]
Outstanding	75,000,000
Variable Interest Entity Notes Payable, Credit Facility Due July 2013, Weighted Avg Rate 2.25% [Member] | Entergy Gulf States Louisiana [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	2.25%
Outstanding		29,400,000
Variable Interest Entity Notes Payable, 5.69% Series E, Due July 2014 [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	5.69%
Outstanding	50,000,000	50,000,000
Variable Interest Entity Notes Payable, 3.30% Series F, Due March 2016 [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	3.30%
Outstanding	20,000,000	20,000,000
Variable Interest Entity Notes Payable, Three Point Two Five Percent Series G, Due July Two Thousand Seventeen [Member | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Outstanding	25,000,000
Variable Interest Entity Notes Payable, 6.29% Series F, Due 2013 [Member] | System Energy [Member]
Debt Instrument [Line Items]
Interest Rate	6.29%
Outstanding	70,000,000	70,000,000
Variable Interest Entity Notes Payable, 5.33% Series G, Due April 2015 [Member] | System Energy [Member]
Debt Instrument [Line Items]
Interest Rate	5.33%
Outstanding	60,000,000	60,000,000
Variable Interest Entity Notes Payable, 4.02% Series H, Due February Two Thousand Seventeen [Member] | System Energy [Member]
Debt Instrument [Line Items]
Outstanding	50,000,000
Variable Interest Entity Notes Payable [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Outstanding	215,000,000	155,000,000
Variable Interest Entity Notes Payable [Member] | Entergy Gulf States Louisiana [Member]
Debt Instrument [Line Items]
Outstanding	150,000,000	164,400,000
Variable Interest Entity Notes Payable [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Outstanding	95,000,000	70,000,000
Variable Interest Entity Notes Payable [Member] | System Energy [Member]
Debt Instrument [Line Items]
Outstanding	180,000,000	130,000,000
Securitization Bonds, 2.30% Series Senior Secured, Due August 2021 [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Interest Rate	2.30%
Outstanding	101,575,000	113,792,000
Securitization Bonds, 2.04% Series Senior Secured, Due June 2021 [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	2.04%
Outstanding	181,584,000	207,156,000
Securitization Bonds, 5.51% Series Senior Secured, Series A, Due October 2013 [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Interest Rate	5.51%
Outstanding		18,494,000
Securitization Bonds, 5.79% Series Senior Secured, Series A, Due October 2018 [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Interest Rate	5.79%
Outstanding	119,341,000	121,600,000
Securitization Bonds, 5.93% Series Senior Secured, Series A, Due June 2022 [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Interest Rate	5.93%
Outstanding	114,400,000	114,400,000
Securitization Bonds, 2.12% Series Senior Secured, Due February 2016 [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Interest Rate	2.12%
Outstanding	93,436,000	132,005,000
Securitization Bonds, 3.65% Series Senior Secured, Due August 2019 [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Interest Rate	3.65%
Outstanding	144,800,000	144,800,000
Securitization Bonds, 4.38% Series Senior Secured, Due November 2023 [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Interest Rate	4.38%
Outstanding	218,600,000	218,600,000
Securitization Bonds [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Outstanding	101,575,000	113,792,000
Securitization Bonds [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Outstanding	181,584,000	207,156,000
Securitization Bonds [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Outstanding	690,577,000	749,899,000
Entergy Corporation Notes Due September 2015 [Member]
Debt Instrument [Line Items]
Interest Rate	3.625%	3.625%
Outstanding	550,000,000	550,000,000
Entergy Corporation Notes Due January Two Thousand Seventeen[Member]
Debt Instrument [Line Items]
Interest Rate	4.70%
Outstanding	500,000,000
Entergy Corporation Notes Due September 2020 [Member]
Debt Instrument [Line Items]
Interest Rate	5.125%	5.125%
Outstanding	450,000,000	450,000,000
Note Payable To NYPA [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate
Interest Rate
Outstanding	109,679,000	133,363,000
Implicit interest rate	4.80%
5 Year Credit Facility [Member]
Debt Instrument [Line Items]
Interest Rate	2.04%	0.75%
Outstanding	795,000,000	1,920,000,000
Long-Term DOE Obligation [Member]
Debt Instrument [Line Items]
Outstanding	181,157,000	181,031,000
Long-Term DOE Obligation [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Outstanding	181,157,000	181,031,000
Waterford 3 Lease Obligation [Member]
Debt Instrument [Line Items]
Interest Rate	7.45%	7.45%
Outstanding	162,949,000	188,255,000
Waterford 3 Lease Obligation, 7.45% [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate	7.45%
Outstanding	162,949,000	188,255,000
Grand Gulf Lease Obligation [Member]
Debt Instrument [Line Items]
Interest Rate	5.13%	5.13%
Outstanding	138,893,000	178,784,000
Grand Gulf Lease Obligation, 5.13% [Member] | System Energy [Member]
Debt Instrument [Line Items]
Interest Rate	5.13%
Outstanding	138,893,000	178,784,000
Bank Credit Facility Entergy Louisiana [Member]
Debt Instrument [Line Items]
Interest Rate		0.67%
Outstanding		50,000,000
Bank Credit Facility, Weighted Average Rate 0.67% [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	0.67%
Outstanding		$ 50,000,000