Consolidated Statements Of Income (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
OPERATING REVENUES
Electric	$ 9,591,902		$ 8,942,360		$ 7,870,649
Natural gas	181,794		154,353		130,836
Competitive businesses	2,721,225		2,294,234		2,300,594
TOTAL	12,494,921		11,390,947		10,302,079
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	2,632,558		2,445,818		2,036,835
Purchased power	1,915,414		1,554,332		1,255,800
Nuclear refueling outage expenses	267,679		256,801		245,600
Operation and maintenance expense	3,310,536		3,331,934		3,045,392
Asset Write-Offs, Impairments, And Related Charges	179,752		341,537		355,524
Other operation and maintenance	123,527		341,537		355,524
Decommissioning	272,621		242,104		184,760
Taxes other than income taxes	604,606		600,350		557,298
Depreciation and amortization	1,318,638		1,261,044		1,144,585
Other regulatory charges (credits) - net	(13,772)		45,597		175,104
TOTAL	10,488,032		10,079,517		9,000,898
Gain on sale of business	0		43,569		0
OPERATING INCOME	2,006,889		1,354,999		1,301,181
OTHER INCOME
Allowance for equity funds used during construction	64,802		66,053		92,759
Interest and investment income	147,686		199,300		127,776
Miscellaneous - net	(42,016)		(59,762)		(53,214)
TOTAL	170,472		205,591		167,321
INTEREST EXPENSE
Interest expense	661,083		629,537		606,596
Allowance for borrowed funds used during construction	(33,576)		(25,500)		(37,312)
TOTAL	627,507		604,037		569,284
INCOME BEFORE INCOME TAXES	1,549,854		956,553		899,218
Income taxes (benefit)	589,597		225,981		30,855
CONSOLIDATED NET INCOME	960,257	[1]	730,572	[1]	868,363	[1]
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	19,536		18,670		21,690
NET INCOME	940,721		711,902		846,673
Earnings per average common share:
Basic (in usd per share)	$ 5.24		$ 3.99		$ 4.77
Diluted (in usd per share)	$ 5.22		$ 3.99		$ 4.76
Basic average number of common shares outstanding	179,506,151		178,211,192		177,324,813
Diluted average number of common shares outstanding	180,296,885		178,570,400		177,737,565
Entergy Arkansas [Member]
OPERATING REVENUES
Electric	2,172,391		2,190,159		2,127,004
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	327,695		426,316		480,464
Purchased power	528,815		473,326		431,932
Nuclear refueling outage expenses	43,258		40,499		47,103
Operation and maintenance expense	647,461		592,892		545,782
Decommissioning	46,972		43,058		40,484
Taxes other than income taxes	91,470		89,471		89,527
Depreciation and amortization	236,770		230,512		222,734
Other regulatory charges (credits) - net	(20,054)		(10,975)		(38,406)
TOTAL	1,902,387		1,885,099		1,819,620
OPERATING INCOME	270,004		305,060		307,384
OTHER INCOME
Allowance for equity funds used during construction	7,238		10,913		9,070
Interest and investment income	23,075		30,148		15,169
Miscellaneous - net	(5,144)		(4,275)		(4,049)
TOTAL	25,169		36,786		20,190
INTEREST EXPENSE
Interest expense	93,921		91,318		82,860
Allowance for borrowed funds used during construction	(3,769)		(3,207)		(2,457)
TOTAL	90,152		88,111		80,403
INCOME BEFORE INCOME TAXES	205,021		253,735		247,171
Income taxes (benefit)	83,629		91,787		94,806
CONSOLIDATED NET INCOME	121,392		161,948		152,365
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	6,873		6,873		6,873
NET INCOME	114,519		155,075		145,492
Entergy Gulf States Louisiana [Member]
OPERATING REVENUES
Electric	2,079,236		1,881,895		1,606,165
Natural gas	71,690		59,238		48,729
TOTAL	2,150,926		1,941,133		1,654,894
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	350,765		286,625		194,878
Purchased power	849,165		731,611		562,247
Nuclear refueling outage expenses	21,443		20,345		17,565
Operation and maintenance expense	392,398		398,589		361,415
Decommissioning	16,844		15,908		15,024
Taxes other than income taxes	84,178		80,307		76,295
Depreciation and amortization	155,383		150,929		146,673
Other regulatory charges (credits) - net	(12,640)		9,482		31,835
TOTAL	1,857,536		1,693,796		1,405,932
OPERATING INCOME	293,390		247,337		248,962
OTHER INCOME
Allowance for equity funds used during construction	7,433		8,062		8,694
Interest and investment income	40,448		52,953		42,773
Miscellaneous - net	(7,608)		(11,567)		(8,928)
TOTAL	40,273		49,448		42,539
INTEREST EXPENSE
Interest expense	86,705		81,118		83,251
Allowance for borrowed funds used during construction	(4,315)		(2,814)		(3,343)
TOTAL	82,390		78,304		79,908
INCOME BEFORE INCOME TAXES	251,273		218,481		211,593
Income taxes (benefit)	88,782		56,819		52,616
CONSOLIDATED NET INCOME	162,491		161,662		158,977
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	827		825		825
NET INCOME	161,664		160,837		158,152
Entergy Louisiana [Member]
OPERATING REVENUES
Electric	2,825,881		2,626,935		2,149,443
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	679,028		570,956		360,964
Purchased power	895,242		850,998		728,170
Nuclear refueling outage expenses	30,347		34,566		24,344
Operation and maintenance expense	514,910		480,166		449,172
Other operation and maintenance	16,000
Decommissioning	24,649		21,612		23,406
Taxes other than income taxes	75,416		74,241		69,186
Depreciation and amortization	252,690		242,787		218,140
Other regulatory charges (credits) - net	(30,844)		(3,785)		127,050
TOTAL	2,441,438		2,271,541		2,000,432
OPERATING INCOME	384,443		355,394		149,011
OTHER INCOME
Allowance for equity funds used during construction	38,807		31,544		39,610
Interest and investment income	94,437		91,599		84,478
Miscellaneous - net	8,458		(3,990)		(2,584)
TOTAL	141,702		119,153		121,504
INTEREST EXPENSE
Interest expense	166,750		153,529		136,967
Allowance for borrowed funds used during construction	(20,406)		(13,323)		(18,611)
TOTAL	146,344		140,206		118,356
INCOME BEFORE INCOME TAXES	379,801		334,341		152,159
Income taxes (benefit)	96,270		81,877		(128,922)
CONSOLIDATED NET INCOME	283,531		252,464		281,081
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	6,969		6,950		6,950
NET INCOME	276,562		245,514		274,131
Entergy Mississippi [Member]
OPERATING REVENUES
Electric	1,524,193		1,334,540		1,120,366
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	325,643		328,934		227,133
Purchased power	493,533		375,745		320,923
Operation and maintenance expense	256,339		261,832		244,722
Write-Off Of Regulatory Asset For New Nuclear	56,225		0		0
Taxes other than income taxes	87,936		83,630		75,006
Depreciation and amortization	113,903		108,714		97,768
Other regulatory charges (credits) - net	3,854		(14,545)		(5,701)
TOTAL	1,337,433		1,144,310		959,851
OPERATING INCOME	186,760		190,230		160,515
OTHER INCOME
Allowance for equity funds used during construction	2,380		2,182		3,955
Interest and investment income	1,055		817		170
Miscellaneous - net	(3,905)		(3,821)		(3,951)
TOTAL	(470)		(822)		174
INTEREST EXPENSE
Interest expense	57,002		59,031		57,345
Allowance for borrowed funds used during construction	(1,243)		(1,539)		(2,103)
TOTAL	55,759		57,492		55,242
INCOME BEFORE INCOME TAXES	130,531		131,916		105,447
Income taxes (benefit)	55,710		49,757		58,679
CONSOLIDATED NET INCOME	74,821		82,159		46,768
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	2,828		2,828		2,828
NET INCOME	71,993		79,331		43,940
Entergy New Orleans [Member]
OPERATING REVENUES
Electric	579,981		525,041		487,633
Natural gas	110,104		95,115		82,107
TOTAL	690,085		620,156		569,740
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	169,605		116,715		107,616
Purchased power	259,680		253,202		222,193
Operation and maintenance expense	120,610		136,003		122,143
Taxes other than income taxes	48,142		48,659		43,189
Depreciation and amortization	38,884		37,717		36,726
Other regulatory charges (credits) - net	694		996		1,983
TOTAL	637,615		593,292		533,850
OPERATING INCOME	52,470		26,864		35,890
OTHER INCOME
Allowance for equity funds used during construction	915		920		791
Interest and investment income	79		89		47
Miscellaneous - net	430		(1,401)		(1,453)
TOTAL	1,424		(392)		(615)
INTEREST EXPENSE
Interest expense	13,310		13,675		11,344
Allowance for borrowed funds used during construction	(447)		(505)		(374)
TOTAL	12,863		13,170		10,970
INCOME BEFORE INCOME TAXES	41,031		13,302		24,305
Income taxes (benefit)	12,324		1,619		7,240
CONSOLIDATED NET INCOME	28,707		11,683		17,065
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	965		965		965
NET INCOME	27,742		10,718		16,100
Entergy Texas [Member]
OPERATING REVENUES
Electric	1,851,982		1,728,799		1,581,496
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	282,809		207,310		243,877
Purchased power	881,438		857,512		717,876
Operation and maintenance expense	232,955		253,786		233,503
Taxes other than income taxes	70,439		63,823		59,348
Depreciation and amortization	99,609		94,744		88,307
Other regulatory charges (credits) - net	76,017		77,491		68,772
TOTAL	1,643,267		1,554,666		1,411,683
OPERATING INCOME	208,715		174,133		169,813
OTHER INCOME
Allowance for equity funds used during construction	2,959		4,647		4,537
Interest and investment income	1,106		1,369		(2,220)
Miscellaneous - net	(2,345)		(3,328)		(4,264)
TOTAL	1,720		2,688		(1,947)
INTEREST EXPENSE
Interest expense	88,049		92,156		96,035
Allowance for borrowed funds used during construction	(2,062)		(3,324)		(3,258)
TOTAL	85,987		88,832		92,777
INCOME BEFORE INCOME TAXES	124,448		87,989		75,089
Income taxes (benefit)	49,644		30,108		33,118
CONSOLIDATED NET INCOME	74,804		57,881		41,971
System Energy [Member]
OPERATING REVENUES
Electric	664,364		735,089		622,118
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	84,658		103,358		62,918
Nuclear refueling outage expenses	23,309		29,551		21,824
Operation and maintenance expense	156,502		174,772		149,346
Decommissioning	41,835		35,472		33,019
Taxes other than income taxes	25,160		25,537		19,468
Depreciation and amortization	142,583		176,387		154,561
Other regulatory charges (credits) - net	(30,799)		(13,068)		(10,429)
TOTAL	443,248		532,009		430,707
OPERATING INCOME	221,116		203,080		191,411
OTHER INCOME
Allowance for equity funds used during construction	5,069		7,784		26,102
Interest and investment income	11,037		9,844		10,134
Miscellaneous - net	(529)		(804)		(617)
TOTAL	15,577		16,824		35,619
INTEREST EXPENSE
Interest expense	58,384		38,173		45,214
Allowance for borrowed funds used during construction	(1,335)		(786)		(7,165)
TOTAL	57,049		37,387		38,049
INCOME BEFORE INCOME TAXES	179,644		182,517		188,981
Income taxes (benefit)	83,310		68,853		77,115
CONSOLIDATED NET INCOME	$ 96,334		$ 113,664		$ 111,866

[1] Consolidated net income and preferred dividend requirements of subsidiaries for 2014, 2013, and 2012 include $12.9 million, $12 million, and $15 million, respectively, of preferred dividends on subsidiaries’ preferred stock without sinking fund that is not presented as equity.