Condensed Consolidated Statements of Income (Unaudited) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013	Jun. 30, 2012
Operating Revenues:
Retail revenues	$ 3,620,000,000		$ 3,597,000,000		$ 6,918,000,000	$ 6,689,000,000
Wholesale revenues	454,000,000		415,000,000		886,000,000	764,000,000
Other electric revenues	156,000,000		154,000,000		311,000,000	302,000,000
Other revenues	16,000,000		15,000,000		28,000,000	30,000,000
Total operating revenues	4,246,000,000		4,181,000,000		8,143,000,000	7,785,000,000
Operating Expenses:
Fuel	1,374,000,000		1,290,000,000		2,636,000,000	2,354,000,000
Purchased power	127,000,000		150,000,000		222,000,000	291,000,000
Other operations and maintenance	947,000,000		944,000,000		1,921,000,000	1,911,000,000
MC Asset Recovery insurance settlement	0		(19,000,000)		0	(19,000,000)
Depreciation and amortization	476,000,000		445,000,000		942,000,000	886,000,000
Taxes other than income taxes	232,000,000		228,000,000		467,000,000	453,000,000
Estimated loss on Kemper IGCC	450,000,000		0		990,000,000	0
Total operating expenses	3,606,000,000		3,038,000,000		7,178,000,000	5,876,000,000
Operating Income	640,000,000		1,143,000,000		965,000,000	1,909,000,000
Other Income and (Expense):
Allowance for equity funds used during construction	45,000,000		32,000,000		86,000,000	63,000,000
Leveraged lease income (loss)	5,000,000		5,000,000		(16,000,000)	11,000,000
Interest expense, net of amounts capitalized	(215,000,000)		(220,000,000)		(426,000,000)	(431,000,000)
Other income (expense), net	(4,000,000)		8,000,000		(10,000,000)	0
Total other income and (expense)	(169,000,000)		(175,000,000)		(366,000,000)	(357,000,000)
Earnings Before Income Taxes	471,000,000		968,000,000		599,000,000	1,552,000,000
Income taxes	158,000,000		329,000,000		189,000,000	529,000,000
Consolidated Net Income	313,000,000		639,000,000		410,000,000	1,023,000,000
Dividends on Preferred and Preference Stock of Subsidiaries	16,000,000		16,000,000		32,000,000	32,000,000
Consolidated Net Income After Dividends on Preferred and Preference Stock of Subsidiaries	297,000,000	[1],[2]	623,000,000	[1]	378,000,000	991,000,000	[1]
Earnings per share (EPS) -
Basic EPS (in dollars per share)	$ 0.34		$ 0.71		$ 0.43	$ 1.14
Diluted EPS (in dollars per share)	$ 0.34		$ 0.71		$ 0.43	$ 1.13
Average number of shares of common stock outstanding (in millions)
Basic (in shares)	874		872		872	870
Diluted (in shares)	879		880		877	879
Cash dividends paid per share of common stock	$ 0.5075		$ 0.49		$ 0.9975	$ 0.9625
Alabama Power [Member]
Operating Revenues:
Retail revenues	1,221,000,000		1,254,000,000		2,362,000,000	2,346,000,000
Wholesale revenues, non-affiliates	61,000,000		70,000,000		120,000,000	131,000,000
Wholesale revenues, affiliates	60,000,000		6,000,000		116,000,000	20,000,000
Other revenues	50,000,000		47,000,000		102,000,000	96,000,000
Total operating revenues	1,392,000,000		1,377,000,000		2,700,000,000	2,593,000,000
Operating Expenses:
Fuel	401,000,000		343,000,000		773,000,000	649,000,000
Purchased power, non-affiliates	28,000,000		17,000,000		48,000,000	32,000,000
Purchased power, affiliates	41,000,000		66,000,000		72,000,000	106,000,000
Other operations and maintenance	319,000,000		316,000,000		649,000,000	637,000,000
Depreciation and amortization	159,000,000		160,000,000		317,000,000	317,000,000
Taxes other than income taxes	87,000,000		85,000,000		177,000,000	171,000,000
Total operating expenses	1,035,000,000		987,000,000		2,036,000,000	1,912,000,000
Operating Income	357,000,000		390,000,000		664,000,000	681,000,000
Other Income and (Expense):
Allowance for equity funds used during construction	8,000,000		4,000,000		16,000,000	9,000,000
Interest expense, net of amounts capitalized	(65,000,000)		(73,000,000)		(131,000,000)	(146,000,000)
Other income (expense), net	2,000,000		0		1,000,000	(3,000,000)
Total other income and (expense)	(55,000,000)		(69,000,000)		(114,000,000)	(140,000,000)
Earnings Before Income Taxes	302,000,000		321,000,000		550,000,000	541,000,000
Income taxes	119,000,000		126,000,000		216,000,000	210,000,000
Consolidated Net Income	183,000,000		195,000,000		334,000,000	331,000,000
Dividends on Preferred and Preference Stock	10,000,000		10,000,000		20,000,000	20,000,000
Consolidated Net Income After Dividends on Preferred and Preference Stock of Subsidiaries	173,000,000		185,000,000		314,000,000	311,000,000
Georgia Power [Member]
Operating Revenues:
Retail revenues	1,879,000,000		1,857,000,000		3,608,000,000	3,451,000,000
Wholesale revenues, non-affiliates	73,000,000		75,000,000		135,000,000	141,000,000
Wholesale revenues, affiliates	5,000,000		6,000,000		11,000,000	9,000,000
Other revenues	85,000,000		82,000,000		170,000,000	164,000,000
Total operating revenues	2,042,000,000		2,020,000,000		3,924,000,000	3,765,000,000
Operating Expenses:
Fuel	557,000,000		572,000,000		1,076,000,000	1,012,000,000
Purchased power, non-affiliates	61,000,000		94,000,000		111,000,000	187,000,000
Purchased power, affiliates	176,000,000		129,000,000		351,000,000	288,000,000
Other operations and maintenance	397,000,000		411,000,000		828,000,000	845,000,000
Depreciation and amortization	204,000,000		185,000,000		404,000,000	373,000,000
Taxes other than income taxes	95,000,000		94,000,000		190,000,000	181,000,000
Total operating expenses	1,490,000,000		1,485,000,000		2,960,000,000	2,886,000,000
Operating Income	552,000,000		535,000,000		964,000,000	879,000,000
Other Income and (Expense):
Allowance for equity funds used during construction	7,000,000		13,000,000		13,000,000	26,000,000
Interest expense, net of amounts capitalized	(96,000,000)		(90,000,000)		(187,000,000)	(181,000,000)
Other income (expense), net	1,000,000		(6,000,000)		(1,000,000)	(9,000,000)
Total other income and (expense)	(88,000,000)		(83,000,000)		(175,000,000)	(164,000,000)
Earnings Before Income Taxes	464,000,000		452,000,000		789,000,000	715,000,000
Income taxes	177,000,000		152,000,000		301,000,000	244,000,000
Consolidated Net Income	287,000,000		300,000,000		488,000,000	471,000,000
Dividends on Preferred and Preference Stock	5,000,000		5,000,000		9,000,000	9,000,000
Consolidated Net Income After Dividends on Preferred and Preference Stock of Subsidiaries	282,000,000		295,000,000		479,000,000	462,000,000
Gulf Power [Member]
Operating Revenues:
Retail revenues	305,550,000		294,878,000		565,427,000	533,398,000
Wholesale revenues, non-affiliates	31,894,000		28,729,000		53,102,000	55,847,000
Wholesale revenues, affiliates	19,050,000		28,702,000		48,505,000	65,066,000
Other revenues	14,679,000		17,899,000		30,413,000	32,142,000
Total operating revenues	371,173,000		370,208,000		697,447,000	686,453,000
Operating Expenses:
Fuel	140,347,000		141,220,000		261,193,000	262,308,000
Purchased power, non-affiliates	13,054,000		12,085,000		24,189,000	23,310,000
Purchased power, affiliates	10,934,000		5,210,000		14,246,000	7,723,000
Other operations and maintenance	76,846,000		79,779,000		155,508,000	155,009,000
Depreciation and amortization	37,081,000		35,173,000		74,134,000	68,480,000
Taxes other than income taxes	23,760,000		25,276,000		47,386,000	49,060,000
Total operating expenses	302,022,000		298,743,000		576,656,000	565,890,000
Operating Income	69,151,000		71,465,000		120,791,000	120,563,000
Other Income and (Expense):
Allowance for equity funds used during construction	1,521,000		1,736,000		2,655,000	2,973,000
Interest expense, net of amounts capitalized	(14,293,000)		(15,698,000)		(28,662,000)	(31,066,000)
Other income (expense), net	(1,391,000)		1,112,000		(2,367,000)	103,000
Total other income and (expense)	(14,163,000)		(12,850,000)		(28,374,000)	(27,990,000)
Earnings Before Income Taxes	54,988,000		58,615,000		92,417,000	92,573,000
Income taxes	20,755,000		22,102,000		34,841,000	33,843,000
Consolidated Net Income	34,233,000		36,513,000		57,576,000	58,730,000
Dividends on Preferred and Preference Stock	1,651,000		1,550,000		3,202,000	3,101,000
Consolidated Net Income After Dividends on Preferred and Preference Stock of Subsidiaries	32,582,000		34,963,000		54,374,000	55,629,000
Mississippi Power [Member]
Operating Revenues:
Retail revenues	214,254,000		192,177,000		382,564,000	358,448,000
Wholesale revenues, non-affiliates	71,938,000		64,116,000		137,047,000	118,347,000
Wholesale revenues, affiliates	15,902,000		5,324,000		24,243,000	9,364,000
Other revenues	4,341,000		4,467,000		8,515,000	8,639,000
Total operating revenues	306,435,000		266,084,000		552,369,000	494,798,000
Operating Expenses:
Fuel	142,193,000		105,469,000		246,757,000	194,088,000
Purchased power, non-affiliates	1,778,000		1,134,000		3,145,000	3,077,000
Purchased power, affiliates	3,922,000		10,843,000		13,611,000	19,703,000
Other operations and maintenance	54,456,000		60,501,000		109,268,000	115,396,000
Depreciation and amortization	22,209,000		22,517,000		45,442,000	44,998,000
Taxes other than income taxes	20,272,000		18,634,000		39,689,000	40,337,000
Estimated loss on Kemper IGCC	450,000,000		0		912,000,000	0
Total operating expenses	694,830,000		219,098,000		1,369,912,000	417,599,000
Operating Income	(388,395,000)		46,986,000		(817,543,000)	77,199,000
Other Income and (Expense):
Allowance for equity funds used during construction	29,042,000		13,870,000		55,116,000	25,697,000
Interest expense, net of amounts capitalized	(10,389,000)		(13,023,000)		(20,798,000)	(20,828,000)
Other income (expense), net	(2,262,000)		(159,000)		(3,809,000)	(281,000)
Total other income and (expense)	16,391,000		688,000		30,509,000	4,588,000
Earnings Before Income Taxes	(372,004,000)		47,674,000		(787,034,000)	81,787,000
Income taxes	(153,327,000)		12,214,000		(322,469,000)	20,639,000
Consolidated Net Income	(218,677,000)		35,460,000		(464,565,000)	61,148,000
Dividends on Preferred and Preference Stock	433,000		433,000		866,000	866,000
Consolidated Net Income After Dividends on Preferred and Preference Stock of Subsidiaries	(219,110,000)		35,027,000		(465,431,000)	60,282,000
Southern Power [Member]
Operating Revenues:
Wholesale revenues, non-affiliates	216,647,000		177,865,000		440,076,000	318,422,000
Wholesale revenues, affiliates	88,638,000		105,950,000		166,829,000	217,738,000
Other revenues	1,970,000		1,990,000		3,297,000	3,326,000
Total operating revenues	307,255,000		285,805,000		610,202,000	539,486,000
Operating Expenses:
Fuel	110,630,000		91,551,000		230,002,000	180,629,000
Purchased power, non-affiliates	22,307,000		22,514,000		36,880,000	43,164,000
Purchased power, affiliates	6,282,000		2,914,000		14,147,000	5,254,000
Other operations and maintenance	62,661,000		40,205,000		113,611,000	88,594,000
Depreciation and amortization	44,898,000		34,016,000		85,058,000	65,929,000
Taxes other than income taxes	5,453,000		4,567,000		10,807,000	9,535,000
Total operating expenses	252,231,000		195,767,000		490,505,000	393,105,000
Operating Income	55,024,000		90,038,000		119,697,000	146,381,000
Other Income and (Expense):
Interest expense, net of amounts capitalized	(20,568,000)		(13,949,000)		(40,962,000)	(27,591,000)
Other income (expense), net	(1,691,000)		(194,000)		(1,948,000)	(164,000)
Total other income and (expense)	(22,259,000)		(14,143,000)		(42,910,000)	(27,755,000)
Earnings Before Income Taxes	32,765,000		75,895,000		76,787,000	118,626,000
Income taxes	4,843,000		29,293,000		19,673,000	42,708,000
Consolidated Net Income	$ 27,922,000		$ 46,602,000		$ 57,114,000	$ 75,918,000

[1] After dividends on preferred and preference stock of subsidiaries.

[2] Segment net income (loss) for the three months ended June 30, 2013 includes a $450 million pre-tax charge ($277.9 million after tax) for an estimated probable loss on the Kemper IGCC. See Note (B) under "Integrated Coal Gasification Combined Cycle – Kemper IGCC Cost Estimate" herein for additional information.