Consolidated Statements of Income (USD $) Share data in Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Operating Revenues:
Retail revenues	$ 15,550,000,000		$ 14,541,000,000		$ 14,187,000,000
Wholesale Revenues	2,184,000,000		1,855,000,000		1,675,000,000
Other Electric Revenues	672,000,000		639,000,000		616,000,000
Other revenues	61,000,000		52,000,000		59,000,000
Total operating revenues	18,467,000,000		17,087,000,000		16,537,000,000
Operating Expenses:
Fuel	6,005,000,000		5,510,000,000		5,057,000,000
Cost of Purchased Power	672,000,000		461,000,000		544,000,000
Other operations and maintenance	4,354,000,000		3,846,000,000		3,772,000,000
Depreciation and amortization	1,945,000,000		1,901,000,000		1,787,000,000
Taxes other than income taxes	981,000,000		934,000,000		914,000,000
Estimated loss on Kemper IGCC	868,000,000		1,180,000,000		0
Total operating expenses	14,825,000,000		13,832,000,000		12,074,000,000
Operating Income	3,642,000,000		3,255,000,000		4,463,000,000
Other Income and (Expense):
Allowance for equity funds used during construction	245,000,000		190,000,000		143,000,000
Interest income	19,000,000		19,000,000		40,000,000
Interest expense, net of amounts capitalized	(835,000,000)		(824,000,000)		(859,000,000)
Other income (expense), net	(63,000,000)		(81,000,000)		(38,000,000)
Total other income and (expense)	(634,000,000)		(696,000,000)		(714,000,000)
Earnings Before Income Taxes	3,008,000,000		2,559,000,000		3,749,000,000
Income taxes	977,000,000		849,000,000		1,334,000,000
Net Income (loss)	2,031,000,000		1,710,000,000		2,415,000,000
Dividends on Preferred and Preference Stock	68,000,000		66,000,000		65,000,000
Net Income After Dividends on Preferred and Preference Stock	1,963,000,000	[1],[2]	1,644,000,000	[1],[2]	2,350,000,000	[1]
Earnings per share (EPS) —
Basic EPS, Per Common Share (in dollars per share)	$ 2.19		$ 1.88		$ 2.70
Diluted EPS, Per Common Share (in dollars per share)	$ 2.18		$ 1.87		$ 2.67
Average number of shares of common stock outstanding — (in millions)
Basic shares	897		877		871
Diluted shares	901		881		879
Alabama Power [Member]
Operating Revenues:
Retail revenues	5,249,000,000		4,952,000,000		4,933,000,000
Wholesale revenues, non-affiliates	281,000,000		248,000,000		277,000,000
Wholesale revenues, affiliates	189,000,000		212,000,000		111,000,000
Other revenues	223,000,000		206,000,000		199,000,000
Total operating revenues	5,942,000,000		5,618,000,000		5,520,000,000
Operating Expenses:
Fuel	1,605,000,000		1,631,000,000		1,503,000,000
Purchased power, non-affiliates	185,000,000		100,000,000		73,000,000
Purchased power, affiliates	200,000,000		129,000,000		182,000,000
Other operations and maintenance	1,468,000,000		1,289,000,000		1,287,000,000
Depreciation and amortization	603,000,000		645,000,000		639,000,000
Taxes other than income taxes	356,000,000		348,000,000		340,000,000
Total operating expenses	4,417,000,000		4,142,000,000		4,024,000,000
Operating Income	1,525,000,000		1,476,000,000		1,496,000,000
Other Income and (Expense):
Allowance for equity funds used during construction	49,000,000		32,000,000		19,000,000
Interest income	15,000,000		16,000,000		16,000,000
Interest expense, net of amounts capitalized	(255,000,000)		(259,000,000)		(287,000,000)
Other income (expense), net	(22,000,000)		(36,000,000)		(24,000,000)
Total other income and (expense)	(213,000,000)		(247,000,000)		(276,000,000)
Earnings Before Income Taxes	1,312,000,000		1,229,000,000		1,220,000,000
Income taxes	512,000,000		478,000,000		477,000,000
Net Income (loss)	800,000,000		751,000,000		743,000,000
Dividends on Preferred and Preference Stock	39,000,000		39,000,000		39,000,000
Net Income After Dividends on Preferred and Preference Stock	761,000,000		712,000,000		704,000,000
Georgia Power [Member]
Operating Revenues:
Retail revenues	8,240,000,000		7,620,000,000		7,362,000,000
Wholesale revenues, non-affiliates	335,000,000		281,000,000		281,000,000
Wholesale revenues, affiliates	42,000,000		20,000,000		20,000,000
Other revenues	371,000,000		353,000,000		335,000,000
Total operating revenues	8,988,000,000		8,274,000,000		7,998,000,000
Operating Expenses:
Fuel	2,547,000,000		2,307,000,000		2,051,000,000
Purchased power, non-affiliates	287,000,000		224,000,000		315,000,000
Purchased power, affiliates	701,000,000		660,000,000		666,000,000
Other operations and maintenance	1,902,000,000		1,654,000,000		1,644,000,000
Depreciation and amortization	846,000,000		807,000,000		745,000,000
Taxes other than income taxes	409,000,000		382,000,000		374,000,000
Total operating expenses	6,692,000,000		6,034,000,000		5,795,000,000
Operating Income	2,296,000,000		2,240,000,000		2,203,000,000
Other Income and (Expense):
Allowance for equity funds used during construction	45,000,000		30,000,000		53,000,000
Interest expense, net of amounts capitalized	(348,000,000)		(361,000,000)		(366,000,000)
Other income (expense), net	(22,000,000)		5,000,000		(17,000,000)
Total other income and (expense)	(325,000,000)		(326,000,000)		(330,000,000)
Earnings Before Income Taxes	1,971,000,000		1,914,000,000		1,873,000,000
Income taxes	729,000,000		723,000,000		688,000,000
Net Income (loss)	1,242,000,000		1,191,000,000		1,185,000,000
Dividends on Preferred and Preference Stock	17,000,000		17,000,000		17,000,000
Net Income After Dividends on Preferred and Preference Stock	1,225,000,000		1,174,000,000		1,168,000,000
Gulf Power [Member]
Operating Revenues:
Retail revenues	1,266,540,000		1,170,000,000		1,144,471,000
Wholesale revenues, non-affiliates	129,151,000		109,386,000		106,881,000
Wholesale revenues, affiliates	130,107,000		99,577,000		123,636,000
Other revenues	64,684,000		61,338,000		64,774,000
Total operating revenues	1,590,482,000		1,440,301,000		1,439,762,000
Operating Expenses:
Fuel	604,641,000		532,791,000		544,936,000
Purchased power, non-affiliates	81,993,000		52,443,000		51,421,000
Purchased power, affiliates	25,246,000		32,835,000		22,665,000
Other operations and maintenance	341,214,000		309,865,000		314,195,000
Depreciation and amortization	145,026,000		149,009,000		141,038,000
Taxes other than income taxes	111,147,000		98,355,000		97,313,000
Total operating expenses	1,309,267,000		1,175,298,000		1,171,568,000
Operating Income	281,215,000		265,003,000		268,194,000
Other Income and (Expense):
Allowance for equity funds used during construction	12,021,000		6,448,000		5,221,000
Interest income	90,000		369,000		1,408,000
Interest expense, net of amounts capitalized	(53,234,000)		(56,025,000)		(60,250,000)
Other income (expense), net	(2,851,000)		(3,994,000)		(3,227,000)
Total other income and (expense)	(43,974,000)		(53,202,000)		(56,848,000)
Earnings Before Income Taxes	237,241,000		211,801,000		211,346,000
Income taxes	88,062,000		79,668,000		79,211,000
Net Income (loss)	149,179,000		132,133,000		132,135,000
Dividends on Preferred and Preference Stock	9,003,000		7,704,000		6,203,000
Net Income After Dividends on Preferred and Preference Stock	140,176,000		124,429,000		125,932,000
Mississippi Power [Member]
Operating Revenues:
Retail revenues	794,643,000		799,139,000		747,453,000
Wholesale revenues, non-affiliates	322,659,000		293,871,000		255,557,000
Wholesale revenues, affiliates	107,210,000		34,773,000		16,403,000
Other revenues	18,099,000		17,374,000		16,583,000
Total operating revenues	1,242,611,000		1,145,157,000		1,035,996,000
Operating Expenses:
Fuel	573,936,000		491,250,000		411,226,000
Purchased power, non-affiliates	17,848,000		5,752,000		5,221,000
Purchased power, affiliates	25,096,000		42,579,000		49,907,000
Other operations and maintenance	270,669,000		253,329,000		228,675,000
Depreciation and amortization	97,120,000		91,398,000		86,510,000
Taxes other than income taxes	79,112,000		80,694,000		79,445,000
Estimated loss on Kemper IGCC	868,000,000		1,102,000,000		78,000,000
Total operating expenses	1,931,781,000		2,067,002,000		938,984,000
Operating Income	(689,170,000)		(921,845,000)		97,012,000
Other Income and (Expense):
Allowance for equity funds used during construction	136,436,000		121,629,000		64,793,000
Interest expense, net of amounts capitalized	(45,322,000)		(36,481,000)		(40,838,000)
Other income (expense), net	(14,097,000)		(6,030,000)		1,264,000
Total other income and (expense)	77,017,000		79,118,000		25,219,000
Earnings Before Income Taxes	(612,153,000)		(842,727,000)		122,231,000
Income taxes	(285,205,000)		(367,835,000)		20,556,000
Net Income (loss)	(326,948,000)		(474,892,000)		101,675,000
Dividends on Preferred and Preference Stock	1,733,000		1,733,000		1,733,000
Net Income After Dividends on Preferred and Preference Stock	(328,681,000)		(476,625,000)		99,942,000
Southern Power [Member]
Operating Revenues:
Wholesale revenues, non-affiliates	1,115,880,000		922,811,000		753,653,000
Wholesale revenues, affiliates	382,523,000		345,799,000		425,180,000
Other revenues	2,846,000		6,616,000		7,215,000
Total operating revenues	1,501,249,000		1,275,226,000		1,186,048,000
Operating Expenses:
Fuel	596,319,000		473,805,000		426,257,000
Purchased power, non-affiliates	104,871,000		75,954,000		80,438,000
Purchased power, affiliates	66,033,000		30,415,000		12,915,000
Other operations and maintenance	237,061,000		208,366,000		173,074,000
Depreciation and amortization	220,174,000		175,295,000		142,624,000
Taxes other than income taxes	21,512,000		21,416,000		19,309,000
Total operating expenses	1,245,970,000		985,251,000		854,617,000
Operating Income	255,279,000		289,975,000		331,431,000
Other Income and (Expense):
Interest expense, net of amounts capitalized	(88,992,000)		(74,475,000)		(62,503,000)
Other income (expense), net	5,560,000		(4,072,000)		(1,022,000)
Total other income and (expense)	(83,432,000)		(78,547,000)		(63,525,000)
Earnings Before Income Taxes	171,847,000		211,428,000		267,906,000
Income taxes	(3,228,000)		45,895,000		92,621,000
Net Income (loss)	175,075,000		165,533,000		175,285,000
Less: Net income attributable to noncontrolling interests	2,775,000		0		0
Net Income (Loss) Attributable to Parent	$ 172,300,000		$ 165,533,000		$ 175,285,000

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

[2] Segment net income (loss) for the traditional operating companies in 2014 and 2013 includes $868 million in pre-tax charges ($536 million after tax) and $1.2 billion in pre-tax charges ($729 million after tax), respectively, for estimated probable losses on the Kemper IGCC. See Note 3 under "Integrated Coal Gasification Combined Cycle – Kemper IGCC Schedule and Cost Estimate" for additional information.