Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010
Operating Activities:
Consolidated net income	$ 1,991,000,000	$ 1,871,000,000
Adjustments to reconcile consolidated net income to net cash provided from operating activities --
Depreciation and amortization, total	1,530,000,000	1,377,000,000
Deferred income taxes	914,000,000	573,000,000
Deferred revenues	(2,000,000)	(77,000,000)
Allowance for equity funds used during construction	(113,000,000)	(140,000,000)
Pension, postretirement, and other employee benefits	(1,000,000)	52,000,000
Stock based compensation expense	35,000,000	28,000,000
Generation construction screening costs		(51,000,000)
Other, net	13,000,000	(1,000,000)
Changes in certain current assets and liabilities --
-Receivables	(118,000,000)	(319,000,000)
-Fossil fuel stock	229,000,000	220,000,000
-Other current assets	(45,000,000)	(59,000,000)
-Accounts payable	(155,000,000)	(82,000,000)
-Accrued taxes	440,000,000	118,000,000
-Accrued compensation	(96,000,000)	93,000,000
-Other current liabilities	(24,000,000)	(76,000,000)
Net cash provided from operating activities	4,598,000,000	3,527,000,000
Investing Activities:
Property additions	(3,115,000,000)	(2,894,000,000)
Distribution of restricted cash	61,000,000	25,000,000
Nuclear decommissioning trust fund purchases	(1,946,000,000)	(696,000,000)
Nuclear decommissioning trust fund sales	1,942,000,000	672,000,000
Proceeds from property sales	21,000,000	7,000,000
Cost of removal, net of salvage	(90,000,000)	(84,000,000)
Change in construction payables	137,000,000	(84,000,000)
Other investing activities	92,000,000	48,000,000
Net cash used for investing activities	(2,898,000,000)	(3,006,000,000)
Financing Activities:
Increase (decrease) in notes payable, net	(1,160,000,000)	(289,000,000)
Proceeds --
Long-term debt issuances	3,144,000,000	2,796,000,000
Common stock issuances	620,000,000	610,000,000
Redemptions --
Long-term debt	(1,987,000,000)	(1,871,000,000)
Payment of common stock dividends	(1,193,000,000)	(1,114,000,000)
Payment of dividends on preferred and preference stock of subsidiaries	(49,000,000)	(49,000,000)
Other financing activities	(6,000,000)	(35,000,000)
Net cash provided from (used for) financing activities	(631,000,000)	48,000,000
Net Change in Cash and Cash Equivalents	1,069,000,000	569,000,000
Cash and Cash Equivalents at Beginning of Period	447,000,000	690,000,000
Cash and Cash Equivalents at End of Period	1,516,000,000	1,259,000,000
Supplemental Cash Flow Information:
Interest (net capitalized for 2011 and 2010, respectively)	369,000,000	589,000,000
Income taxes (net of refunds)	(358,000,000)	278,000,000
Noncash transactions - accrued property additions at end of period	541,000,000	361,000,000
Alabama Power [Member]
Operating Activities:
Consolidated net income	636,000,000	682,000,000
Adjustments to reconcile consolidated net income to net cash provided from operating activities --
Depreciation and amortization, total	562,000,000	519,000,000
Deferred income taxes	350,000,000	301,000,000
Allowance for equity funds used during construction	(18,000,000)	(29,000,000)
Pension, postretirement, and other employee benefits	(17,000,000)	(9,000,000)
Stock based compensation expense	5,000,000	4,000,000
Other, net	6,000,000	29,000,000
Changes in certain current assets and liabilities --
-Receivables	(74,000,000)	(110,000,000)
-Fossil fuel stock	75,000,000	21,000,000
-Materials and supplies	(13,000,000)	(10,000,000)
-Other current assets	(19,000,000)	(34,000,000)
-Accounts payable	(120,000,000)	(66,000,000)
-Accrued taxes	215,000,000	(48,000,000)
-Accrued compensation	(35,000,000)	8,000,000
-Other current liabilities	5,000,000	(103,000,000)
Net cash provided from operating activities	1,558,000,000	1,155,000,000
Investing Activities:
Property additions	(694,000,000)	(685,000,000)
Distribution of restricted cash from pollution control revenue bonds	11,000,000	18,000,000
Nuclear decommissioning trust fund purchases	(301,000,000)	(126,000,000)
Nuclear decommissioning trust fund sales	301,000,000	126,000,000
Cost of removal, net of salvage	(52,000,000)	(26,000,000)
Change in construction payables	(13,000,000)	(34,000,000)
Other investing activities	14,000,000	(9,000,000)
Net cash used for investing activities	(734,000,000)	(736,000,000)
Proceeds --
Capital contributions from parent company	10,000,000	19,000,000
Senior note issuances	700,000,000
Redemptions --
Pollution control revenue bonds	(4,000,000)
Senior notes	(650,000,000)
Payment of preferred and preference stock dividends	(30,000,000)	(30,000,000)
Payment of common stock dividends	(415,000,000)	(407,000,000)
Other financing activities	(13,000,000)	(1,000,000)
Net cash provided from (used for) financing activities	(402,000,000)	(419,000,000)
Net Change in Cash and Cash Equivalents	422,000,000
Cash and Cash Equivalents at Beginning of Period	154,000,000	368,000,000
Cash and Cash Equivalents at End of Period	576,000,000	368,000,000
Supplemental Cash Flow Information:
Interest (net capitalized for 2011 and 2010, respectively)	207,000,000	214,000,000
Income taxes (net of refunds)	(95,000,000)	212,000,000
Noncash transactions - accrued property additions at end of period	15,000,000	39,000,000
Georgia Power [Member]
Operating Activities:
Consolidated net income	1,048,000,000	909,000,000
Adjustments to reconcile consolidated net income to net cash provided from operating activities --
Depreciation and amortization, total	646,000,000	551,000,000
Deferred income taxes	422,000,000	225,000,000
Deferred revenues		(77,000,000)
Deferred expenses	(30,000,000)	(54,000,000)
Allowance for equity funds used during construction	(73,000,000)	(105,000,000)
Pension, postretirement, and other employee benefits	2,000,000	20,000,000
Stock based compensation expense	7,000,000	5,000,000
Other, net	(47,000,000)	(10,000,000)
Changes in certain current assets and liabilities --
-Receivables	(68,000,000)	(126,000,000)
-Fossil fuel stock	115,000,000	153,000,000
-Prepaid income taxes	81,000,000	2,000,000
-Other current assets	(2,000,000)	4,000,000
-Accounts payable	(46,000,000)	61,000,000
-Accrued taxes	(1,000,000)	66,000,000
-Accrued compensation	(18,000,000)	45,000,000
-Other current liabilities	43,000,000	38,000,000
Net cash provided from operating activities	2,079,000,000	1,707,000,000
Investing Activities:
Property additions	(1,363,000,000)	(1,628,000,000)
Nuclear decommissioning trust fund purchases	(1,645,000,000)	(570,000,000)
Nuclear decommissioning trust fund sales	1,641,000,000	546,000,000
Cost of removal, net of salvage	(21,000,000)	(46,000,000)
Change in construction payables, net of joint owner portion	108,000,000	27,000,000
Other investing activities	(9,000,000)	5,000,000
Net cash used for investing activities	(1,289,000,000)	(1,666,000,000)
Financing Activities:
Increase (decrease) in notes payable, net	(575,000,000)	(321,000,000)
Proceeds --
Capital contributions from parent company	199,000,000	681,000,000
Pollution control revenue bonds	604,000,000
Senior note issuances	550,000,000	1,950,000,000
Other long-term debt issuances	250,000,000
Redemptions --
Pollution control revenue bonds	(286,000,000)
Senior notes	(277,000,000)	(1,112,000,000)
Other long-term debt	(509,000,000)	(3,000,000)
Payment of preferred and preference stock dividends	(13,000,000)	(13,000,000)
Payment of common stock dividends	(672,000,000)	(615,000,000)
Other financing activities	(3,000,000)	(32,000,000)
Net cash provided from (used for) financing activities	(732,000,000)	535,000,000
Net Change in Cash and Cash Equivalents	58,000,000	576,000,000
Cash and Cash Equivalents at Beginning of Period	8,000,000	14,000,000
Cash and Cash Equivalents at End of Period	66,000,000	590,000,000
Supplemental Cash Flow Information:
Interest (net capitalized for 2011 and 2010, respectively)	240,000,000	231,000,000
Income taxes (net of refunds)	(2,000,000)	107,000,000
Noncash transactions - accrued property additions at end of period	375,000,000	261,000,000
Gulf Power [Member]
Operating Activities:
Consolidated net income	90,912,000	105,176,000
Adjustments to reconcile consolidated net income to net cash provided from operating activities --
Depreciation and amortization, total	101,335,000	95,491,000
Deferred income taxes	56,869,000	55,355,000
Allowance for equity funds used during construction	(7,091,000)	(4,504,000)
Pension, postretirement, and other employee benefits	(179,000)	2,883,000
Stock based compensation expense	1,055,000	959,000
Other, net	(5,787,000)	2,570,000
Changes in certain current assets and liabilities --
-Receivables	(13,605,000)	(67,814,000)
-Prepayments	7,745,000	2,667,000
-Fossil fuel stock	36,802,000	29,483,000
-Materials and supplies	(6,382,000)	(1,363,000)
-Prepaid income taxes	36,081,000	(9,558,000)
-Property damage cost recovery		34,000
-Other current assets	(571,000)
-Accounts payable	(65,000)	12,003,000
-Accrued taxes	22,186,000	18,166,000
-Accrued compensation	(4,290,000)	2,695,000
-Other current liabilities	10,284,000	10,776,000
Net cash provided from operating activities	325,299,000	255,019,000
Investing Activities:
Property additions	(228,696,000)	(203,911,000)
Distribution of restricted cash from pollution control revenue bonds		6,347,000
Cost of removal, net of salvage	(9,137,000)	(750,000)
Change in construction payables	636,000	(17,792,000)
Payments pursuant to long-term service agreements	(6,173,000)	(4,211,000)
Other investing activities	303,000	(295,000)
Net cash used for investing activities	(243,067,000)	(220,612,000)
Financing Activities:
Increase (decrease) in notes payable, net	(56,607,000)	(88,733,000)
Proceeds --
Capital contributions from parent company	1,569,000	3,571,000
Pollution control revenue bonds		21,000,000
Common stock issuances	50,000,000	50,000,000
Senior note issuances	125,000,000	300,000,000
Redemptions --
Senior notes	(553,000)	(140,413,000)
Other long-term debt	(110,000,000)
Payment of preferred and preference stock dividends	(4,652,000)	(4,652,000)
Payment of common stock dividends	(82,500,000)	(78,225,000)
Other financing activities	(3,593,000)	(3,280,000)
Net cash provided from (used for) financing activities	(81,336,000)	59,268,000
Net Change in Cash and Cash Equivalents	896,000	93,675,000
Cash and Cash Equivalents at Beginning of Period	16,434,000	8,677,000
Cash and Cash Equivalents at End of Period	17,330,000	102,352,000
Supplemental Cash Flow Information:
Interest (net capitalized for 2011 and 2010, respectively)	36,427,000	28,394,000
Income taxes (net of refunds)	(46,319,000)	13,862,000
Noncash transactions - accrued property additions at end of period	15,820,000	28,670,000
Mississippi Power [Member]
Operating Activities:
Consolidated net income	79,218,000	65,364,000
Adjustments to reconcile consolidated net income to net cash provided from operating activities --
Depreciation and amortization, total	64,329,000	60,959,000
Deferred income taxes	35,225,000	(4,557,000)
Convertible investment tax credits received	51,761,000	14,352,000
Allowance for equity funds used during construction	(15,413,000)	(2,018,000)
Pension, postretirement, and other employee benefits	3,327,000	6,657,000
Stock based compensation expense	1,302,000	1,053,000
Generation construction screening costs		(50,554,000)
Other, net	(7,642,000)	(720,000)
Changes in certain current assets and liabilities --
-Receivables	(5,295,000)	(21,003,000)
-Fossil fuel stock	2,345,000	10,163,000
-Materials and supplies	(1,442,000)	(222,000)
-Prepaid income taxes	(18,762,000)
-Other current assets	2,295,000	(2,503,000)
-Accounts payable	21,711,000	25,819,000
-Accrued taxes	(3,751,000)	7,630,000
-Accrued compensation	(4,514,000)	427,000
-Over recovered regulatory clause revenues	(17,754,000)	14,939,000
-Other current liabilities	(296,000)	(442,000)
Net cash provided from operating activities	186,644,000	125,344,000
Investing Activities:
Property additions	(605,710,000)	(125,980,000)
Capital grant proceeds	139,921,000
Distribution of restricted cash	50,000,000
Cost of removal, net of salvage	(6,931,000)	(7,613,000)
Change in construction payables	70,909,000	6,903,000
Other investing activities	(3,399,000)	(6,693,000)
Net cash used for investing activities	(355,210,000)	(133,383,000)
Proceeds --
Capital contributions from parent company	199,782,000	3,920,000
Other long-term debt issuances	115,000,000	125,000,000
Redemptions --
Capital leases	(1,067,000)	(988,000)
Other long-term debt	(130,000,000)
Payment of preferred and preference stock dividends	(1,299,000)	(1,299,000)
Payment of common stock dividends	(56,625,000)	(51,450,000)
Other financing activities	(377,000)	(614,000)
Net cash provided from (used for) financing activities	125,414,000	74,569,000
Net Change in Cash and Cash Equivalents	(43,152,000)	66,530,000
Cash and Cash Equivalents at Beginning of Period	160,779,000	65,025,000
Cash and Cash Equivalents at End of Period	117,627,000	131,555,000
Supplemental Cash Flow Information:
Interest (net capitalized for 2011 and 2010, respectively)	13,956,000	16,726,000
Income taxes (net of refunds)	(33,276,000)	11,345,000
Noncash transactions - accrued property additions at end of period	109,732,000	10,592,000
Southern Power [Member]
Operating Activities:
Consolidated net income	138,415,000	108,867,000
Adjustments to reconcile consolidated net income to net cash provided from operating activities --
Depreciation and amortization, total	102,756,000	97,469,000
Deferred income taxes	474,000	10,001,000
Convertible investment tax credits received	62,298,000	22,150,000
Deferred revenues	8,114,000	18,846,000
Mark-to-market adjustments	1,479,000	2,435,000
Other, net	3,790,000	2,364,000
Changes in certain current assets and liabilities --
-Receivables	(24,799,000)	(35,588,000)
-Fossil fuel stock	305,000	6,097,000
-Materials and supplies	(1,826,000)	3,216,000
-Prepaid income taxes	24,436,000	1,668,000
-Other current assets	219,000	598,000
-Accounts payable	(2,634,000)	(1,988,000)
-Accrued taxes	27,417,000	31,069,000
Accrued interest	(11,601,000)	(12,194,000)
-Other current liabilities	(661,000)	21,000
Net cash provided from operating activities	328,182,000	255,031,000
Investing Activities:
Property additions	(200,157,000)	(211,519,000)
Change in construction payables	(14,667,000)	31,021,000
Payments pursuant to long-term service agreements	(46,065,000)	(30,936,000)
Other investing activities	(3,211,000)	3,752,000
Net cash used for investing activities	(264,100,000)	(207,682,000)
Financing Activities:
Increase (decrease) in notes payable, net	(220,903,000)	20,216,000
Proceeds --
Capital contributions from parent company	125,596,000	5,638,000
Senior note issuances	300,000,000
Redemptions --
Other long-term debt	(3,441,000)
Payment of common stock dividends	(68,400,000)	(80,325,000)
Other financing activities	(5,629,000)	426,000
Net cash provided from (used for) financing activities	127,223,000	(54,045,000)
Net Change in Cash and Cash Equivalents	191,305,000	(6,696,000)
Cash and Cash Equivalents at Beginning of Period	14,204,000	7,152,000
Cash and Cash Equivalents at End of Period	205,509,000	456,000
Supplemental Cash Flow Information:
Interest (net capitalized for 2011 and 2010, respectively)	65,201,000	63,560,000
Income taxes (net of refunds)	(26,555,000)	(8,158,000)
Noncash transactions - accrued property additions at end of period	$ 36,971,000	$ 36,576,000

The net change during the reporting period in the value of certain assets that are created when regulatory agencies permits public utilities to defer costs to the balance sheet.

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Payments pursuant to long-term service agreements.

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Proceeds.

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The cash inflow associated with the amount received by a shareholder, a corporation, or the government during the period.

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Future cash outflow to pay for purchases of fixed assets that have occurred.

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).

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The increase (decrease) during the reporting period in cash and cash equivalents. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label.

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Other income (expense) included in net income that results in no cash inflows or outflows in the period. Includes noncash adjustments to reconcile net income (loss) to cash provided by (used in) operating activities that are not separately disclosed.

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