Consolidated Statements of Income (USD $) Share data in Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Operating Revenues:
Retail revenues	$ 14,541,000,000		$ 14,187,000,000		$ 15,071,000,000
Wholesale revenues	1,855,000,000		1,675,000,000		1,905,000,000
Other electric revenues	639,000,000		616,000,000		611,000,000
Other revenues	52,000,000		59,000,000		70,000,000
Total operating revenues	17,087,000,000		16,537,000,000		17,657,000,000
Operating Expenses:
Fuel	5,510,000,000		5,057,000,000		6,262,000,000
Purchased power	461,000,000		544,000,000		608,000,000
Other operations and maintenance	3,846,000,000		3,772,000,000		3,938,000,000
Depreciation and amortization	1,901,000,000		1,787,000,000		1,717,000,000
Taxes other than income taxes	934,000,000		914,000,000		901,000,000
Estimated loss on Kemper IGCC	1,180,000,000		0		0
Total operating expenses	13,832,000,000		12,074,000,000		13,426,000,000
Operating Income	3,255,000,000		4,463,000,000		4,231,000,000
Other Income and (Expense):
Allowance for equity funds used during construction	190,000,000		143,000,000		153,000,000
Interest income	19,000,000		40,000,000		21,000,000
Interest expense, net of amounts capitalized	(824,000,000)		(859,000,000)		(857,000,000)
Other income (expense), net	(81,000,000)		(38,000,000)		(61,000,000)
Total other income and (expense)	(696,000,000)		(714,000,000)		(744,000,000)
Earnings Before Income Taxes	2,559,000,000		3,749,000,000		3,487,000,000
Income taxes	849,000,000		1,334,000,000		1,219,000,000
Net Income	1,710,000,000		2,415,000,000		2,268,000,000
Dividends on Preferred and Preference Stock	66,000,000		65,000,000		65,000,000
Net Income After Dividends on Preferred and Preference Stock	1,644,000,000	[1],[2]	2,350,000,000	[1]	2,203,000,000	[1]
Earnings per share (EPS) -
Basic EPS (in dollars per share)	$ 1.88		$ 2.70		$ 2.57
Diluted EPS (in dollars per share)	$ 1.87		$ 2.67		$ 2.55
Average number of shares of common stock outstanding
Basic (in shares)	877		871		857
Diluted (in shares)	881		879		864
Alabama Power [Member]
Operating Revenues:
Retail revenues	4,952,000,000		4,933,000,000		4,972,000,000
Wholesale revenues, non-affiliates	248,000,000		277,000,000		287,000,000
Wholesale revenues, affiliates	212,000,000		111,000,000		244,000,000
Other revenues	206,000,000		199,000,000		199,000,000
Total operating revenues	5,618,000,000		5,520,000,000		5,702,000,000
Operating Expenses:
Fuel	1,631,000,000		1,503,000,000		1,679,000,000
Purchased power, non-affiliates	100,000,000		73,000,000		73,000,000
Purchased power, affiliates	129,000,000		182,000,000		198,000,000
Other operations and maintenance	1,289,000,000		1,287,000,000		1,262,000,000
Depreciation and amortization	645,000,000		639,000,000		637,000,000
Taxes other than income taxes	348,000,000		340,000,000		339,000,000
Total operating expenses	4,142,000,000		4,024,000,000		4,188,000,000
Operating Income	1,476,000,000		1,496,000,000		1,514,000,000
Other Income and (Expense):
Allowance for equity funds used during construction	32,000,000		19,000,000		22,000,000
Interest income	16,000,000		16,000,000		18,000,000
Interest expense, net of amounts capitalized	(259,000,000)		(287,000,000)		(299,000,000)
Other income (expense), net	(36,000,000)		(24,000,000)		(30,000,000)
Total other income and (expense)	(247,000,000)		(276,000,000)		(289,000,000)
Earnings Before Income Taxes	1,229,000,000		1,220,000,000		1,225,000,000
Income taxes	478,000,000		477,000,000		478,000,000
Net Income	751,000,000		743,000,000		747,000,000
Dividends on Preferred and Preference Stock	39,000,000		39,000,000		39,000,000
Net Income After Dividends on Preferred and Preference Stock	712,000,000		704,000,000		708,000,000
Georgia Power [Member]
Operating Revenues:
Retail revenues	7,620,000,000		7,362,000,000		8,099,000,000
Wholesale revenues, non-affiliates	281,000,000		281,000,000		341,000,000
Wholesale revenues, affiliates	20,000,000		20,000,000		32,000,000
Other revenues	353,000,000		335,000,000		328,000,000
Total operating revenues	8,274,000,000		7,998,000,000		8,800,000,000
Operating Expenses:
Fuel	2,307,000,000		2,051,000,000		2,789,000,000
Purchased power, non-affiliates	224,000,000		315,000,000		390,000,000
Purchased power, affiliates	660,000,000		666,000,000		713,000,000
Other operations and maintenance	1,654,000,000		1,644,000,000		1,777,000,000
Depreciation and amortization	807,000,000		745,000,000		715,000,000
Taxes other than income taxes	382,000,000		374,000,000		369,000,000
Total operating expenses	6,034,000,000		5,795,000,000		6,753,000,000
Operating Income	2,240,000,000		2,203,000,000		2,047,000,000
Other Income and (Expense):
Allowance for equity funds used during construction	30,000,000		53,000,000		96,000,000
Interest expense, net of amounts capitalized	(361,000,000)		(366,000,000)		(343,000,000)
Other income (expense), net	5,000,000		(17,000,000)		(13,000,000)
Total other income and (expense)	(326,000,000)		(330,000,000)		(260,000,000)
Earnings Before Income Taxes	1,914,000,000		1,873,000,000		1,787,000,000
Income taxes	723,000,000		688,000,000		625,000,000
Net Income	1,191,000,000		1,185,000,000		1,162,000,000
Dividends on Preferred and Preference Stock	17,000,000		17,000,000		17,000,000
Net Income After Dividends on Preferred and Preference Stock	1,174,000,000		1,168,000,000		1,145,000,000
Gulf Power [Member]
Operating Revenues:
Retail revenues	1,170,000,000		1,144,471,000		1,208,490,000
Wholesale revenues, non-affiliates	109,386,000		106,881,000		133,555,000
Wholesale revenues, affiliates	99,577,000		123,636,000		111,346,000
Other revenues	61,338,000		64,774,000		66,421,000
Total operating revenues	1,440,301,000		1,439,762,000		1,519,812,000
Operating Expenses:
Fuel	532,791,000		544,936,000		662,283,000
Purchased power, non-affiliates	52,443,000		51,421,000		48,882,000
Purchased power, affiliates	32,835,000		22,665,000		41,612,000
Other operations and maintenance	309,865,000		314,195,000		311,358,000
Depreciation and amortization	149,009,000		141,038,000		129,651,000
Taxes other than income taxes	98,355,000		97,313,000		101,302,000
Total operating expenses	1,175,298,000		1,171,568,000		1,295,088,000
Operating Income	265,003,000		268,194,000		224,724,000
Other Income and (Expense):
Allowance for equity funds used during construction	6,448,000		5,221,000		9,914,000
Interest income	369,000		1,408,000		54,000
Interest expense, net of amounts capitalized	(56,025,000)		(60,250,000)		(58,150,000)
Other income (expense), net	(3,994,000)		(3,227,000)		(4,066,000)
Total other income and (expense)	(53,202,000)		(56,848,000)		(52,248,000)
Earnings Before Income Taxes	211,801,000		211,346,000		172,476,000
Income taxes	79,668,000		79,211,000		61,268,000
Net Income	132,133,000		132,135,000		111,208,000
Dividends on Preferred and Preference Stock	7,704,000		6,203,000		6,203,000
Net Income After Dividends on Preferred and Preference Stock	124,429,000		125,932,000		105,005,000
Mississippi Power [Member]
Operating Revenues:
Retail revenues	799,139,000		747,453,000		792,463,000
Wholesale revenues, non-affiliates	293,871,000		255,557,000		273,178,000
Wholesale revenues, affiliates	34,773,000		16,403,000		30,417,000
Other revenues	17,374,000		16,583,000		16,819,000
Total operating revenues	1,145,157,000		1,035,996,000		1,112,877,000
Operating Expenses:
Fuel	491,250,000		411,226,000		490,415,000
Purchased power, non-affiliates	5,752,000		5,221,000		6,239,000
Purchased power, affiliates	42,579,000		49,907,000		65,574,000
Other operations and maintenance	253,329,000		228,675,000		266,395,000
Depreciation and amortization	91,398,000		86,510,000		80,337,000
Taxes other than income taxes	80,694,000		79,445,000		70,127,000
Estimated loss on Kemper IGCC	1,102,000,000		78,000,000		0
Total operating expenses	2,067,002,000		938,984,000		979,087,000
Operating Income	(921,845,000)		97,012,000		133,790,000
Other Income and (Expense):
Allowance for equity funds used during construction	121,629,000		64,793,000		24,707,000
Interest income	186,000		745,000		1,347,000
Interest expense, net of amounts capitalized	(36,481,000)		(40,838,000)		(21,691,000)
Other income (expense), net	(6,216,000)		519,000		(45,000)
Total other income and (expense)	79,118,000		25,219,000		4,318,000
Earnings Before Income Taxes	(842,727,000)		122,231,000		138,108,000
Income taxes	(367,835,000)		20,556,000		42,193,000
Net Income	(474,892,000)		101,675,000		95,915,000
Dividends on Preferred and Preference Stock	1,733,000		1,733,000		1,733,000
Net Income After Dividends on Preferred and Preference Stock	(476,625,000)		99,942,000		94,182,000
Southern Power [Member]
Operating Revenues:
Wholesale revenues, non-affiliates	922,811,000		753,653,000		870,607,000
Wholesale revenues, affiliates	345,799,000		425,180,000		358,585,000
Other revenues	6,616,000		7,215,000		6,769,000
Total operating revenues	1,275,226,000		1,186,048,000		1,235,961,000
Operating Expenses:
Fuel	473,805,000		426,257,000		454,790,000
Purchased power, non-affiliates	75,954,000		80,438,000		78,368,000
Purchased power, affiliates	30,415,000		12,915,000		52,924,000
Other operations and maintenance	208,366,000		173,074,000		171,538,000
Depreciation and amortization	175,295,000		142,624,000		124,204,000
Taxes other than income taxes	21,416,000		19,309,000		17,686,000
Total operating expenses	985,251,000		854,617,000		899,510,000
Operating Income	289,975,000		331,431,000		336,451,000
Other Income and (Expense):
Interest expense, net of amounts capitalized	(74,475,000)		(62,503,000)		(77,334,000)
Loss on extinguishment of debt	0		0		(19,806,000)
Other income (expense), net	(4,072,000)		(1,022,000)		(1,223,000)
Total other income and (expense)	(78,547,000)		(63,525,000)		(98,363,000)
Earnings Before Income Taxes	211,428,000		267,906,000		238,088,000
Income taxes	45,895,000		92,621,000		75,857,000
Net Income	$ 165,533,000		$ 175,285,000		$ 162,231,000

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

[2] (b) Segment net income (loss) in 2013 includes $1.2 billion in pre-tax charges ($729 million after tax) for estimated probable losses on the Kemper IGCC. See Note (3) under "Integrated Coal Gasification Combined Cycle – Kemper IGCC Construction Schedule and Cost Estimate" for additional information.