Statements of Cash Flows (ENTERGY MISSISSIPPI, INC) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
OPERATING ACTIVITIES
Net income	$ 1,367,372	[1]	$ 1,270,305	[1]	$ 1,251,050	[1]
Adjustments to reconcile net income to net cash flow provided by operating activities:
Depreciation and amortization	1,745,455		1,705,331		1,458,861
Deferred income taxes, investment tax credits, and non-current taxes accrued	(280,029)		718,987		864,684
Changes in working capital:
Receivables	28,091		(99,640)		116,444
Fuel inventory	5,393		(10,665)		19,291
Accounts payable	(131,970)		216,635		(14,251)
Taxes accrued	580,042		(116,988)		(260,029)
Interest accrued	(34,172)		17,651		4,974
Deferred fuel	(55,686)		8,909		72,314
Other working capital accounts	41,875		(160,326)		(43,391)
Changes in provisions for estimated losses	(11,086)		265,284		(12,030)
Changes in other regulatory assets	(673,244)		339,408		(415,157)
Pensions and other postretirement liabilities	962,461		(80,844)		71,789
Other	(415,685)		(103,793)		(181,391)
Net cash flow provided by operating activities	3,128,817		3,926,081		2,933,158
INVESTING ACTIVITIES
Construction/capital expenditures	(2,040,027)		(1,974,286)		(1,931,245)
Allowance for equity funds used during construction	86,252		59,381		59,545
Proceeds from sale of assets and businesses	6,531		228,171		39,554
Change in money pool receivable - net	(7,260)		(29,945)		(1,036)
Decrease (increase) in other investments	(11,623)		24,956		100,956
Payment to storm reserve escrow account	(6,425)		(296,614)		(6,802)
Net cash flow used in investing activities	(3,446,853)		(2,574,223)		(2,094,394)
FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	2,990,881		3,870,694		2,003,469
Retirement of long-term debt	(2,437,372)		(4,178,127)		(1,843,169)
Dividends paid:
Common stock	(589,605)		(603,854)		(576,956)
Preferred stock	(20,933)		(20,063)		(19,958)
Net cash flow used in financing activities	(282,285)		(1,767,275)		(1,048,388)
Net increase (decrease) in cash and cash equivalents	(600,034)		(415,079)		(210,940)
Cash and cash equivalents at beginning of period	1,294,472		1,709,551		1,920,491
Cash and cash equivalents at end of period	694,438		1,294,472		1,709,551
Cash paid during the period for:
Interest - net of amount capitalized	532,271		534,004		576,811
Income taxes	(2,042)		32,144		43,057
Entergy Mississippi
OPERATING ACTIVITIES
Net income	108,729		85,377		79,367
Adjustments to reconcile net income to net cash flow provided by operating activities:
Depreciation and amortization	93,119		89,875		86,872
Deferred income taxes, investment tax credits, and non-current taxes accrued	(3,443)		48,744		15,923
Changes in working capital:
Receivables	5,488		(42,790)		41,247
Fuel inventory	(35,621)		(1,003)		3,413
Accounts payable	(7,059)		1,906		3,511
Taxes accrued	13,535		(12,817)		1,779
Interest accrued	456		1,915		2,066
Deferred fuel	18,998		(76,064)		77,932
Other working capital accounts	(27,480)		46,101		(37,373)
Changes in provisions for estimated losses	(1,177)		(1,937)		4,446
Changes in other regulatory assets	(83,399)		(5,780)		(43,807)
Pensions and other postretirement liabilities	39,183		(6,525)		(6,786)
Other	(21,733)		(6,895)		(6,572)
Net cash flow provided by operating activities	99,596		120,107		222,018
INVESTING ACTIVITIES
Construction/capital expenditures	(165,998)		(223,787)		(130,907)
Allowance for equity funds used during construction	7,755		6,655		2,964
Proceeds from sale of assets and businesses	868		3,951
Change in money pool receivable - net			31,435		(31,435)
Decrease (increase) in other investments	18		7,615
Payment to storm reserve escrow account					(175)
Investment in affiliates	5,527
Other			35		80
Net cash flow used in investing activities	(151,830)		(174,096)		(159,473)
FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	268,418		76,727		147,996
Retirement of long-term debt	(180,000)		(100,000)
Change in money pool payable - net	(31,256)		33,255		(66,044)
Dividends paid:
Common stock	(3,300)		(43,400)		(51,300)
Preferred stock	(2,828)		(2,828)		(2,828)
Net cash flow used in financing activities	51,034		(36,246)		27,824
Net increase (decrease) in cash and cash equivalents	(1,200)		(90,235)		90,369
Cash and cash equivalents at beginning of period	1,216		91,451		1,082
Cash and cash equivalents at end of period	16		1,216		91,451
Cash paid during the period for:
Interest - net of amount capitalized	49,192		51,250		47,007
Income taxes	$ 22,094		$ 16,401		$ 23,478

[1] Consolidated net income and preferred dividend requirements of subsidiaries for 2011, 2010 and 2009 include $13.3 million of preferred dividends on subsidiaries' preferred stock without sinking fund that is not presented as equity.