Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Operating Activities:
Consolidated net income	$ 368,000,000	$ 97,000,000
Adjustments to reconcile consolidated net income to net cash provided from operating activities --
Depreciation and amortization, total	587,000,000	568,000,000
Deferred income taxes	(37,000,000)	(92,000,000)
Allowance for equity funds used during construction	(57,000,000)	(41,000,000)
Stock based compensation expense	28,000,000	26,000,000
Estimated loss on Kemper IGCC	380,000,000	540,000,000
Other, net	(8,000,000)	(19,000,000)
Changes in certain current assets and liabilities --
-Receivables	(128,000,000)	29,000,000
-Fossil fuel stock	441,000,000	36,000,000
-Materials and supplies	(5,000,000)	52,000,000
-Other current assets	(114,000,000)	(72,000,000)
-Accounts payable	(109,000,000)	(47,000,000)
-Accrued taxes	(44,000,000)	(98,000,000)
-Accrued compensation	(144,000,000)	(282,000,000)
-Other current liabilities	(55,000,000)	40,000,000
Net cash provided from operating activities	1,103,000,000	737,000,000
Investing Activities:
Property additions	(1,180,000,000)	(1,197,000,000)
Investment of restricted cash	0	(78,000,000)
Distribution of restricted cash	9,000,000	1,000,000
Nuclear decommissioning trust fund purchases	(231,000,000)	(262,000,000)
Nuclear decommissioning trust fund sales	229,000,000	261,000,000
Cost of removal, net of salvage	(22,000,000)	(30,000,000)
Change in construction payables	51,000,000	6,000,000
Prepaid long-term service agreement	(64,000,000)	(31,000,000)
Other investing activities	(7,000,000)	51,000,000
Net cash used for investing activities	(1,215,000,000)	(1,279,000,000)
Financing Activities:
Increase (decrease) in notes payable, net	(884,000,000)	468,000,000
Proceeds --
Long-term debt issuances	1,251,000,000	1,035,000,000
Interest-bearing refundable deposit related to asset sale	75,000,000	0
Common stock issuances	128,000,000	42,000,000
Redemptions --
Long-term debt	(9,000,000)	(656,000,000)
Common stock repurchased	(4,000,000)	(18,000,000)
Payment of common stock dividends	(451,000,000)	(426,000,000)
Payment of dividends on preferred and preference stock of subsidiaries	(17,000,000)	(16,000,000)
Other financing activities	(46,000,000)	0
Net cash provided from (used for) financing activities	43,000,000	429,000,000
Net Change in Cash and Cash Equivalents	(69,000,000)	(113,000,000)
Cash and Cash Equivalents at Beginning of Period	659,000,000	628,000,000
Cash and Cash Equivalents at End of Period	590,000,000	515,000,000
Cash paid (received) during the period for --
Interest (net of capitalized amounts)	186,000,000	187,000,000
Income taxes, net	(7,000,000)	4,000,000
Noncash transactions - accrued property additions at end of period	450,000,000	501,000,000
Alabama Power [Member]
Operating Activities:
Consolidated net income	197,000,000	151,000,000
Adjustments to reconcile consolidated net income to net cash provided from operating activities --
Depreciation and amortization, total	210,000,000	206,000,000
Deferred income taxes	25,000,000	25,000,000
Allowance for equity funds used during construction	(10,000,000)	(8,000,000)
Other, net	(22,000,000)	9,000,000
Changes in certain current assets and liabilities --
-Receivables	(17,000,000)	(13,000,000)
-Fossil fuel stock	99,000,000	28,000,000
-Materials and supplies	3,000,000	16,000,000
-Other current assets	(81,000,000)	(71,000,000)
-Accounts payable	(139,000,000)	(124,000,000)
-Accrued taxes	147,000,000	90,000,000
-Accrued compensation	(37,000,000)	(61,000,000)
-Retail fuel cost over recovery - short-term	(20,000,000)	21,000,000
-Other current liabilities	(3,000,000)	1,000,000
Net cash provided from operating activities	352,000,000	270,000,000
Investing Activities:
Property additions	(287,000,000)	(274,000,000)
Nuclear decommissioning trust fund purchases	(56,000,000)	(57,000,000)
Nuclear decommissioning trust fund sales	56,000,000	57,000,000
Cost of removal, net of salvage	(12,000,000)	(9,000,000)
Change in construction payables	49,000,000	(1,000,000)
Other investing activities	(5,000,000)	37,000,000
Net cash used for investing activities	(255,000,000)	(247,000,000)
Financing Activities:
Increase (decrease) in notes payable, net	0	45,000,000
Proceeds --
Capital contributions from parent company	7,000,000	5,000,000
Redemptions --
Payment of preferred and preference stock dividends	(10,000,000)	(10,000,000)
Payment of common stock dividends	(137,000,000)	(132,000,000)
Other financing activities	0	(3,000,000)
Net cash provided from (used for) financing activities	(140,000,000)	(95,000,000)
Net Change in Cash and Cash Equivalents	(43,000,000)	(72,000,000)
Cash and Cash Equivalents at Beginning of Period	295,000,000	137,000,000
Cash and Cash Equivalents at End of Period	252,000,000	65,000,000
Cash paid (received) during the period for --
Interest (net of capitalized amounts)	61,000,000	64,000,000
Income taxes, net	(28,000,000)	(3,000,000)
Noncash transactions - accrued property additions at end of period	66,000,000	30,000,000
Georgia Power [Member]
Operating Activities:
Consolidated net income	270,000,000	201,000,000
Adjustments to reconcile consolidated net income to net cash provided from operating activities --
Depreciation and amortization, total	250,000,000	239,000,000
Deferred income taxes	96,000,000	59,000,000
Allowance for equity funds used during construction	(6,000,000)	(6,000,000)
Retail fuel cost over recovery - long-term	(44,000,000)	(58,000,000)
Deferred expenses	33,000,000	31,000,000
Other, net	(14,000,000)	(27,000,000)
Changes in certain current assets and liabilities --
-Receivables	(83,000,000)	40,000,000
-Fossil fuel stock	257,000,000	(4,000,000)
-Prepaid income taxes	(11,000,000)	11,000,000
-Other current assets	(12,000,000)	42,000,000
-Accounts payable	(28,000,000)	78,000,000
-Accrued taxes	(166,000,000)	(127,000,000)
-Accrued compensation	(38,000,000)	(66,000,000)
-Retail fuel cost over recovery - short-term	(14,000,000)	10,000,000
-Other current liabilities	9,000,000	5,000,000
Net cash provided from operating activities	499,000,000	428,000,000
Investing Activities:
Property additions	(460,000,000)	(419,000,000)
Investment of restricted cash	0	(18,000,000)
Nuclear decommissioning trust fund purchases	(175,000,000)	(205,000,000)
Nuclear decommissioning trust fund sales	173,000,000	204,000,000
Cost of removal, net of salvage	(3,000,000)	(17,000,000)
Prepaid long-term service agreement	(44,000,000)	(5,000,000)
Change in construction payables, net of joint owner portion	28,000,000	(25,000,000)
Other investing activities	1,000,000	6,000,000
Net cash used for investing activities	(480,000,000)	(479,000,000)
Financing Activities:
Increase (decrease) in notes payable, net	(749,000,000)	300,000,000
Proceeds --
Capital contributions from parent company	12,000,000	11,000,000
Pollution control revenue bonds issuances	0	18,000,000
Senior notes issuances	0	650,000,000
FFB loan	1,000,000,000	0
Redemptions --
Senior notes	0	(650,000,000)
Payment of preferred and preference stock dividends	(4,000,000)	(4,000,000)
Payment of common stock dividends	(238,000,000)	(227,000,000)
FFB loan issuance costs	(49,000,000)	(1,000,000)
Other financing activities	(3,000,000)	(12,000,000)
Net cash provided from (used for) financing activities	(31,000,000)	85,000,000
Net Change in Cash and Cash Equivalents	(12,000,000)	34,000,000
Cash and Cash Equivalents at Beginning of Period	30,000,000	45,000,000
Cash and Cash Equivalents at End of Period	18,000,000	79,000,000
Cash paid (received) during the period for --
Interest (net of capitalized amounts)	71,000,000	72,000,000
Income taxes, net	11,000,000	3,000,000
Noncash transactions - accrued property additions at end of period	229,000,000	212,000,000
Gulf Power [Member]
Operating Activities:
Consolidated net income	38,994,000	23,343,000
Adjustments to reconcile consolidated net income to net cash provided from operating activities --
Depreciation and amortization, total	33,764,000	38,794,000
Deferred income taxes	14,287,000	16,777,000
Allowance for equity funds used during construction	(2,379,000)	(1,134,000)
Pension, postretirement, and other employee benefits	1,553,000	2,889,000
Stock based compensation expense	734,000	669,000
Other, net	503,000	2,485,000
Changes in certain current assets and liabilities --
-Receivables	(25,275,000)	(2,305,000)
-Prepayments	1,126,000	934,000
-Fossil fuel stock	46,267,000	1,423,000
-Materials and supplies	(167,000)	(513,000)
-Prepaid income taxes	10,495,000	(7,667,000)
-Other current assets	(422,000)	0
-Accounts payable	5,746,000	(17,812,000)
-Accrued taxes	9,110,000	5,380,000
-Accrued compensation	(4,801,000)	(9,451,000)
-Over recovered regulatory clause revenues	5,490,000	(10,186,000)
-Other current liabilities	7,125,000	6,073,000
Net cash provided from operating activities	142,150,000	49,699,000
Investing Activities:
Property additions	(78,789,000)	(66,696,000)
Cost of removal, net of salvage	(3,059,000)	(3,469,000)
Change in construction payables	1,129,000	1,787,000
Payments pursuant to long-term service agreements	(2,127,000)	(1,558,000)
Other investing activities	97,000	243,000
Net cash used for investing activities	(82,749,000)	(69,693,000)
Financing Activities:
Increase (decrease) in notes payable, net	(75,388,000)	5,809,000
Proceeds --
Capital contributions from parent company	668,000	556,000
Common stock issuances	50,000,000	40,000,000
Redemptions --
Payment of preferred and preference stock dividends	(2,251,000)	(1,551,000)
Payment of common stock dividends	(30,800,000)	(28,850,000)
Other financing activities	(27,000)	(206,000)
Net cash provided from (used for) financing activities	(57,798,000)	15,758,000
Net Change in Cash and Cash Equivalents	1,603,000	(4,236,000)
Cash and Cash Equivalents at Beginning of Period	21,753,000	32,167,000
Cash and Cash Equivalents at End of Period	23,356,000	27,931,000
Cash paid (received) during the period for --
Interest (net of capitalized amounts)	4,630,000	8,306,000
Income taxes, net	(5,839,000)	3,886,000
Noncash transactions - accrued property additions at end of period	33,186,000	22,462,000
Mississippi Power [Member]
Operating Activities:
Consolidated net income	(171,615,000)	(245,888,000)
Adjustments to reconcile consolidated net income to net cash provided from operating activities --
Depreciation and amortization, total	24,035,000	21,692,000
Deferred income taxes	(124,158,000)	(174,082,000)
Investment tax credits	2,626,000	0
Allowance for equity funds used during construction	(38,082,000)	(26,074,000)
Pension, postretirement, and other employee benefits	1,037,000	2,926,000
Stock based compensation expense	1,324,000	1,033,000
Regulatory assets associated with Kemper IGCC	(13,226,000)	(6,843,000)
Estimated loss on Kemper IGCC	380,000,000	462,000,000
Kemper regulatory deferral	34,342,000	0
Other, net	2,555,000	(628,000)
Changes in certain current assets and liabilities --
-Receivables	(13,525,000)	(5,226,000)
-Fossil fuel stock	36,595,000	8,415,000
-Materials and supplies	(2,970,000)	(4,744,000)
-Prepaid income taxes	(32,720,000)	1,573,000
-Other current assets	(2,000,000)	(2,389,000)
-Accounts payable	14,900,000	(13,783,000)
-Accrued taxes	(54,996,000)	(45,429,000)
-Accrued interest	8,225,000	6,570,000
-Accrued compensation	(2,080,000)	(10,247,000)
-Over recovered regulatory clause revenues	(18,358,000)	2,996,000
-Other current liabilities	293,000	2,971,000
Net cash provided from operating activities	32,202,000	(25,157,000)
Investing Activities:
Property additions	(323,816,000)	(369,313,000)
Cost of removal, net of salvage	(3,997,000)	(902,000)
Change in construction payables	(30,519,000)	23,150,000
Capital grant proceeds	0	1,784,000
Other investing activities	(3,100,000)	(7,145,000)
Net cash used for investing activities	(361,432,000)	(352,426,000)
Proceeds --
Capital contributions from parent company	687,000	100,552,000
Bonds-Other	0	15,814,000
Interest-bearing refundable deposit related to asset sale	75,000,000	0
Other long-term debt issuances	250,000,000	350,000,000
Redemptions — Capital leases	(623,000)	0
Redemptions --
Payment of preferred and preference stock dividends	(433,000)	(433,000)
Payment of common stock dividends	0	(44,190,000)
Return of capital	(54,930,000)	0
Other financing activities	(454,000)	(1,409,000)
Net cash provided from (used for) financing activities	269,247,000	420,334,000
Net Change in Cash and Cash Equivalents	(59,983,000)	42,751,000
Cash and Cash Equivalents at Beginning of Period	145,165,000	145,008,000
Cash and Cash Equivalents at End of Period	85,182,000	187,759,000
Cash paid (received) during the period for --
Interest (net of capitalized amounts)	3,028,000	4,860,000
Income taxes, net	26,078,000	(25,000)
Noncash transactions - accrued property additions at end of period	132,065,000	238,013,000
Southern Power [Member]
Operating Activities:
Consolidated net income	34,287,000	29,192,000
Adjustments to reconcile consolidated net income to net cash provided from operating activities --
Depreciation and amortization, total	50,264,000	42,790,000
Deferred income taxes	(14,087,000)	13,587,000
Investment tax credits	26,134,000	(493,000)
Deferred revenues	(20,033,000)	(20,432,000)
Other, net	2,184,000	233,000
Changes in certain current assets and liabilities --
-Receivables	21,034,000	11,743,000
-Fossil fuel stock	2,487,000	1,840,000
-Materials and supplies	(2,763,000)	(1,546,000)
-Prepaid income taxes	14,911,000	1,600,000
-Other current assets	2,129,000	1,324,000
-Accounts payable	2,232,000	(6,933,000)
-Accrued taxes	5,831,000	4,155,000
-Accrued interest	(14,502,000)	(10,841,000)
-Other current liabilities	(42,000)	(314,000)
Net cash provided from operating activities	110,066,000	65,905,000
Investing Activities:
Property additions	(5,468,000)	(58,553,000)
Change in construction payables	543,000	3,704,000
Payments pursuant to long-term service agreements	(10,029,000)	(11,741,000)
Other investing activities	54,000	(224,000)
Net cash used for investing activities	(14,900,000)	(66,814,000)
Financing Activities:
Increase (decrease) in notes payable, net	0	76,985,000
Proceeds --
Capital contributions from parent company	(2,752,000)	1,033,000
Other long-term debt issuances	639,000	1,717,000
Redemptions --
Other long-term debt	(818,000)	(220,000)
Distributions to noncontrolling interest	(150,000)	0
Contributions from noncontrolling interest	471,000	0
Payment of common stock dividends	(32,780,000)	(32,280,000)
Other financing activities	631,000	678,000
Net cash provided from (used for) financing activities	(34,759,000)	47,913,000
Net Change in Cash and Cash Equivalents	60,407,000	47,004,000
Cash and Cash Equivalents at Beginning of Period	68,744,000	28,592,000
Cash and Cash Equivalents at End of Period	129,151,000	75,596,000
Cash paid (received) during the period for --
Interest (net of capitalized amounts)	35,790,000	28,120,000
Income taxes, net	(44,468,000)	(179,000)
Noncash transactions - accrued property additions at end of period	$ 4,810,000	$ 8,907,000