Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
OPERATING ACTIVITIES
Consolidated net income	$ 579,220	$ 566,513
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	1,472,985	1,293,667
Deferred income taxes, investment tax credits, and non-current taxes accrued	174,052	111,228
Asset impairment	291,505	355,524
Changes in working capital:
Receivables	(273,876)	(162,015)
Fuel inventory	16,421	(9,063)
Accounts payable	(80,626)	143,596
Prepaid taxes and taxes accrued	(6,150)	44,625
Interest accrued	(25,586)	(24,752)
Deferred fuel	(43,419)	(40,192)
Other working capital accounts	(81,315)	(131,374)
Changes in provisions for estimated losses	(247,560)	(17,479)
Changes in other regulatory assets	173,164	49,250
Other regulatory liabilities	290,965	237,627
Changes in pension and other postretirement liabilities	(48,814)	(75,104)
Other	8,493	(122,263)
Net cash flow provided by operating activities	2,199,459	2,219,788
INVESTING ACTIVITIES
Construction/capital expenditures	(1,781,208)	(1,868,690)
Allowance for equity funds used during construction	49,411	73,497
Payments for Nuclear Fuel	(398,456)	(412,912)
Payment for purchase of plant	0	(645)
Proceeds from sale of assets and businesses	0	0
Changes in securitization account	(3,702)	(2,036)
NYPA value sharing payment	(71,736)	(72,000)
Payment to storm reserve escrow account	(5,882)	(7,009)
Receipts from storm reserve escrow account	260,279	17,884
Decrease (increase) in other investments	(43,656)	(69,995)
Litigation proceeds for reimbursement of spent nuclear fuel storage costs	21,034	109,105
Proceeds from nuclear decommissioning trust fund sales	1,063,711	1,416,697
Investment in nuclear decommissioning trust funds	(1,147,571)	(1,507,123)
Net cash flow used in investing activities	(2,057,776)	(2,323,227)
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	2,925,997	2,289,494
Preferred stock	0	51,000
Common stock and treasury stock	20,720	56,602
Retirement of long-term debt	(3,106,226)	(2,029,016)
Repurchase of common stock	0	0
Changes in credit borrowings - net	310,042	247,845
Dividends paid:
Common stock	(445,031)	(441,292)
Preferred stock	(14,469)	(15,497)
Net cash flow used in financing activities	(308,967)	159,136
Effect of exchange rates on cash and cash equivalents	47	(416)
Net increase (decrease) in cash and cash equivalents	(167,237)	55,281
Cash and cash equivalents at beginning of period	532,569	694,438
Cash and cash equivalents at end of period	365,332	749,719
Cash paid / (received) during the period for:
Interest - net of amount capitalized	435,161	422,142
Income taxes	107,560	42,472
Entergy Arkansas [Member]
OPERATING ACTIVITIES
Consolidated net income	137,779	142,180
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	263,176	266,755
Deferred income taxes, investment tax credits, and non-current taxes accrued	99,442	97,641
Changes in working capital:
Receivables	(70,219)	(86,046)
Fuel inventory	16,740	3,130
Accounts payable	(12,996)	(144,562)
Prepaid taxes and taxes accrued	(222,118)	(9,302)
Interest accrued	(9,760)	(11,061)
Deferred fuel	26,672	88,097
Other working capital accounts	(12,324)	32,465
Changes in provisions for estimated losses	200	171
Changes in other regulatory assets	2,515	51,089
Changes in pension and other postretirement liabilities	(25,332)	(40,976)
Other	7,982	(51,661)
Net cash flow provided by operating activities	201,757	337,920
INVESTING ACTIVITIES
Construction/capital expenditures	(365,511)	(273,010)
Allowance for equity funds used during construction	10,587	9,002
Payments for Nuclear Fuel	(73,151)	(134,928)
Proceeds from sale of nuclear fuel	36,478	76,042
Remittances to transition charge account	7,356	(11,987)
Payments from transition charge account	(10,849)	7,476
Litigation proceeds for reimbursement of spent nuclear fuel storage costs	10,271	0
Proceeds from nuclear decommissioning trust fund sales	173,431	103,394
Investment in nuclear decommissioning trust funds	(178,516)	(110,520)
Change in money pool receivable - net	(45,340)	9,875
Net cash flow used in investing activities	(435,244)	(324,656)
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	716,670	0
Retirement of long-term debt	(435,896)	(5,990)
Change in money pool payable - net	0	0
Changes in credit borrowings - net	(16,602)	18,776
Dividends paid:
Common stock	(15,000)	0
Preferred stock	(5,155)	(5,155)
Other	0	(872)
Net cash flow used in financing activities	244,017	6,759
Net increase (decrease) in cash and cash equivalents	10,530	20,023
Cash and cash equivalents at beginning of period	34,533	22,599
Cash and cash equivalents at end of period	45,063	42,622
Cash paid / (received) during the period for:
Interest - net of amount capitalized	75,022	68,990
Income taxes	211,415	(6,897)
Entergy Gulf States Louisiana [Member]
OPERATING ACTIVITIES
Consolidated net income	119,528	128,958
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	165,684	158,577
Deferred income taxes, investment tax credits, and non-current taxes accrued	78,265	51,415
Changes in working capital:
Receivables	(59,583)	63,699
Fuel inventory	(1,868)	(7,747)
Accounts payable	13,921	42,149
Prepaid taxes and taxes accrued	(61,290)	67,987
Interest accrued	5,302	5,696
Deferred fuel	(8,867)	(91,354)
Other working capital accounts	(24,029)	(11,434)
Changes in provisions for estimated losses	(60,205)	(3,100)
Changes in other regulatory assets	31,754	(5,648)
Changes in pension and other postretirement liabilities	4,877	(3,459)
Other	66,809	(4,028)
Net cash flow provided by operating activities	270,298	391,711
INVESTING ACTIVITIES
Construction/capital expenditures	(205,162)	(198,785)
Allowance for equity funds used during construction	5,630	6,512
Payments for Nuclear Fuel	(132,083)	(41,592)
Proceeds from sale of nuclear fuel	19,401	56,579
Payment to storm reserve escrow account	(25)	(66)
Receipts from storm reserve escrow account	65,475	3,364
Decrease (increase) in other investments	0	0
Proceeds from nuclear decommissioning trust fund sales	66,152	96,653
Investment in nuclear decommissioning trust funds	(80,669)	(111,084)
Change in money pool receivable - net	0	(8,565)
Proceeds from sale of investment	0	51,000
Other	0	0
Net cash flow used in investing activities	(261,281)	(145,984)
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	69,782	74,251
Retirement of long-term debt	(75,000)	(70,840)
Change in money pool payable - net	50,761	0
Changes in credit borrowings - net	31,000	(29,400)
Dividends paid:
Common stock	(119,900)	(67,400)
Preferred stock	(619)	(619)
Other	43	0
Net cash flow used in financing activities	(43,933)	(94,008)
Net increase (decrease) in cash and cash equivalents	(34,916)	151,719
Cash and cash equivalents at beginning of period	35,686	24,845
Cash and cash equivalents at end of period	770	176,564
Cash paid / (received) during the period for:
Interest - net of amount capitalized	53,512	54,291
Income taxes	62,435	0
Entergy Louisiana [Member]
OPERATING ACTIVITIES
Consolidated net income	207,350	244,217
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	250,232	299,745
Deferred income taxes, investment tax credits, and non-current taxes accrued	168,988	(94,765)
Changes in working capital:
Receivables	(131,198)	(37,610)
Fuel inventory	992	(3)
Accounts payable	(39,947)	65,772
Prepaid taxes and taxes accrued	(37,490)	6,383
Interest accrued	1,527	(1,557)
Deferred fuel	22,450	(30,132)
Other working capital accounts	21,742	(29,490)
Changes in provisions for estimated losses	(187,642)	(17,392)
Changes in other regulatory assets	(19,483)	(42,781)
Other regulatory liabilities	146,329	139,624
Changes in pension and other postretirement liabilities	1,851	(17,361)
Other	44,742	(82,978)
Net cash flow provided by operating activities	450,443	401,672
INVESTING ACTIVITIES
Construction/capital expenditures	(583,451)	(429,820)
Allowance for equity funds used during construction	21,693	27,032
Payments for Nuclear Fuel	(41,209)	(134,413)
Payment for purchase of plant	0	0
Proceeds from sale of nuclear fuel	23,438	48,990
Remittances to transition charge account	(14,844)	(22,113)
Payments from transition charge account	8,759	15,472
Receipts from storm reserve escrow account	187,007	13,669
Proceeds from nuclear decommissioning trust fund sales	12,211	19,833
Investment in nuclear decommissioning trust funds	(21,006)	(28,422)
Change in money pool receivable - net	(42,434)	(30,710)
Other	(22)	666
Net cash flow used in investing activities	(449,858)	(519,816)
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	418,009	465,997
Retirement of long-term debt	(20,960)	(37,649)
Change in money pool payable - net	0	(118,415)
Changes in credit borrowings - net	(30,361)	(37,949)
Dividends paid:
Common stock	(351,254)	(600)
Preferred stock	(5,213)	(5,213)
Other	0	0
Net cash flow used in financing activities	10,221	266,171
Net increase (decrease) in cash and cash equivalents	10,806	148,027
Cash and cash equivalents at beginning of period	30,086	878
Cash and cash equivalents at end of period	40,892	148,905
Cash paid / (received) during the period for:
Interest - net of amount capitalized	106,975	98,979
Income taxes	(3,874)	(3,601)
Entergy Mississippi [Member]
OPERATING ACTIVITIES
Consolidated net income	66,701	51,676
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	81,268	72,451
Deferred income taxes, investment tax credits, and non-current taxes accrued	36,845	39,703
Changes in working capital:
Receivables	(50,692)	23,552
Fuel inventory	5,249	(3,377)
Accounts payable	17,940	12,637
Prepaid taxes and taxes accrued	(11,345)	(15,150)
Interest accrued	1,960	(3,683)
Deferred fuel	(10,179)	(12,249)
Other working capital accounts	2,069	(10,977)
Changes in provisions for estimated losses	(232)	(2,496)
Changes in other regulatory assets	8,153	10,526
Changes in pension and other postretirement liabilities	(5,444)	(10,438)
Other	5,554	3,845
Net cash flow provided by operating activities	147,847	156,020
INVESTING ACTIVITIES
Construction/capital expenditures	(128,006)	(121,634)
Allowance for equity funds used during construction	1,817	2,950
Proceeds from sale of assets and businesses	0	0
Change in money pool receivable - net	16,878	(5,497)
Investment in affiliates	0	0
Other	42	16
Net cash flow used in investing activities	(109,269)	(124,165)
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	0	0
Retirement of long-term debt	(100,000)	0
Change in money pool payable - net	19,150	(1,999)
Changes in credit borrowings - net	0	0
Dividends paid:
Common stock	(7,400)	0
Preferred stock	(2,121)	(2,121)
Other	(86)	(94)
Net cash flow used in financing activities	(90,457)	(4,214)
Net increase (decrease) in cash and cash equivalents	(51,879)	27,641
Cash and cash equivalents at beginning of period	52,970	16
Cash and cash equivalents at end of period	1,091	27,657
Cash paid / (received) during the period for:
Interest - net of amount capitalized	40,718	44,481
Income taxes	1,999	2,118
Entergy New Orleans
OPERATING ACTIVITIES
Consolidated net income	9,990	17,781
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	28,394	27,446
Deferred income taxes, investment tax credits, and non-current taxes accrued	(13,649)	12,269
Changes in working capital:
Receivables	(944)	(17,721)
Fuel inventory	(1,769)	1,977
Accounts payable	1,628	11,175
Prepaid taxes and taxes accrued	4,502	(10,826)
Interest accrued	(266)	(740)
Deferred fuel	19,108	(6,095)
Other working capital accounts	(9,813)	(6,628)
Changes in provisions for estimated losses	(1,871)	6,015
Changes in other regulatory assets	13,915	(10,748)
Changes in pension and other postretirement liabilities	(2,581)	(6,597)
Other	13,304	5,852
Net cash flow provided by operating activities	59,948	23,160
INVESTING ACTIVITIES
Construction/capital expenditures	(68,643)	(47,325)
Allowance for equity funds used during construction	656	487
Payment to storm reserve escrow account	(5,828)	(6,774)
Receipts from storm reserve escrow account	7,749	0
Decrease (increase) in other investments	0	0
Change in money pool receivable - net	(15,480)	9,074
Investment in affiliates	0	0
Net cash flow used in investing activities	(81,546)	(44,538)
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	98,495	0
Retirement of long-term debt	(70,061)	0
Change in money pool payable - net	0	15,719
Dividends paid:
Common stock	0	(1,700)
Preferred stock	(724)	(724)
Other	0	(579)
Net cash flow used in financing activities	27,710	12,716
Net increase (decrease) in cash and cash equivalents	6,112	(8,662)
Cash and cash equivalents at beginning of period	9,391	9,834
Cash and cash equivalents at end of period	15,503	1,172
Cash paid / (received) during the period for:
Interest - net of amount capitalized	9,775	8,431
Income taxes	425	0
Entergy Texas [Member]
OPERATING ACTIVITIES
Consolidated net income	47,676	37,182
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	70,731	64,887
Deferred income taxes, investment tax credits, and non-current taxes accrued	78,717	28,140
Changes in working capital:
Receivables	(63,375)	(15,544)
Fuel inventory	(968)	(2,650)
Accounts payable	13,450	11,930
Prepaid taxes and taxes accrued	39,644	(8,545)
Interest accrued	(9,190)	(9,032)
Deferred fuel	(92,604)	11,543
Other working capital accounts	4,689	(10,244)
Changes in provisions for estimated losses	2,358	3,172
Changes in other regulatory assets	78,433	72,559
Changes in pension and other postretirement liabilities	(8,983)	(11,158)
Other	6,700	(255)
Net cash flow provided by operating activities	167,278	171,985
INVESTING ACTIVITIES
Construction/capital expenditures	(133,489)	(128,199)
Allowance for equity funds used during construction	3,559	3,355
Remittances to transition charge account	(68,646)	(65,325)
Payments from transition charge account	74,523	74,441
Change in money pool receivable - net	(5,930)	50,210
Other	(42)	0
Net cash flow used in investing activities	(130,025)	(65,518)
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	0	0
Retirement of long-term debt	(50,579)	(49,192)
Change in money pool payable - net	0	0
Dividends paid:
Common stock	(25,000)	(57,420)
Other	(167)	(728)
Net cash flow used in financing activities	(75,746)	(107,340)
Net increase (decrease) in cash and cash equivalents	(38,493)	(873)
Cash and cash equivalents at beginning of period	60,236	65,289
Cash and cash equivalents at end of period	21,743	64,416
Cash paid / (received) during the period for:
Interest - net of amount capitalized	75,500	77,264
Income taxes	(94,233)	6,000
System Energy [Member]
OPERATING ACTIVITIES
Consolidated net income	90,845	92,520
Adjustments to reconcile consolidated net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization	206,699	157,070
Deferred income taxes, investment tax credits, and non-current taxes accrued	57,096	106,167
Changes in working capital:
Receivables	4,180	(8,224)
Accounts payable	(2,039)	(9,070)
Prepaid taxes and taxes accrued	(219,221)	(63,879)
Interest accrued	(127)	(1,636)
Other working capital accounts	17,025	(30,126)
Changes in other regulatory assets	13,724	(38,909)
Changes in pension and other postretirement liabilities	(4,891)	(9,375)
Other	(26,477)	22,502
Net cash flow provided by operating activities	136,814	217,040
INVESTING ACTIVITIES
Construction/capital expenditures	(37,731)	(415,013)
Allowance for equity funds used during construction	5,470	24,158
Payments for Nuclear Fuel	(53,666)	(182,619)
Proceeds from sale of nuclear fuel	26,522	38,413
Decrease (increase) in other investments	0	(72,170)
Proceeds from nuclear decommissioning trust fund sales	144,631	315,006
Investment in nuclear decommissioning trust funds	(168,023)	(337,352)
Change in money pool receivable - net	22,907	116,321
Net cash flow used in investing activities	(59,890)	(513,256)
Proceeds from the issuance of:
Proceeds from the issuance of long-term debt	0	297,908
Retirement of long-term debt	(111,479)	(192,867)
Change in money pool payable - net	0	0
Changes in credit borrowings - net	6,531	62,772
Dividends paid:
Common stock	(50,000)	(32,750)
Other	(1,786)	(3,766)
Net cash flow used in financing activities	(156,734)	131,297
Net increase (decrease) in cash and cash equivalents	(79,810)	(164,919)
Cash and cash equivalents at beginning of period	83,622	185,157
Cash and cash equivalents at end of period	3,812	20,238
Cash paid / (received) during the period for:
Interest - net of amount capitalized	20,708	27,667
Income taxes	$ 217,089	$ (3,873)