Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 659,000,000	$ 628,000,000
Restricted cash and cash equivalents	0	7,000,000
Receivables --
Customer accounts receivable	1,027,000,000	961,000,000
Unbilled revenues	448,000,000	441,000,000
Under recovered regulatory clause revenues	58,000,000	29,000,000
Other accounts and notes receivable	304,000,000	235,000,000
Accumulated provision for uncollectible accounts	(18,000,000)	(17,000,000)
Fossil fuel stock, at average cost	1,339,000,000	1,819,000,000
Materials and supplies, at average cost	959,000,000	1,000,000,000
Vacation pay	171,000,000	165,000,000
Prepaid expenses	489,000,000	657,000,000
Other regulatory assets, current	124,000,000	163,000,000
Other current assets	39,000,000	74,000,000
Total current assets	5,599,000,000	6,162,000,000
Property, Plant, and Equipment:
In service	66,021,000,000	63,251,000,000
Less accumulated depreciation	23,059,000,000	21,964,000,000
Plant in service, net of depreciation	42,962,000,000	41,287,000,000
Other utility plant, net	240,000,000	263,000,000
Nuclear fuel, at amortized cost	855,000,000	851,000,000
Construction work in progress	7,151,000,000	5,989,000,000
Total property, plant, and equipment	51,208,000,000	48,390,000,000
Other Property and Investments:
Nuclear decommissioning trusts, at fair value	1,465,000,000	1,303,000,000
Leveraged leases	665,000,000	670,000,000
Miscellaneous property and investments	218,000,000	216,000,000
Total other property and investments	2,348,000,000	2,189,000,000
Deferred Charges and Other Assets:
Deferred charges related to income taxes	1,432,000,000	1,385,000,000
Prepaid pension costs	419,000,000	0
Unamortized debt issuance expense	139,000,000	133,000,000
Unamortized loss on reacquired debt	293,000,000	309,000,000
Other regulatory assets, deferred	2,557,000,000	4,032,000,000
Other deferred charges and assets	551,000,000	549,000,000
Total deferred charges and other assets	5,391,000,000	6,408,000,000
Total Assets	64,546,000,000	63,149,000,000
Current Liabilities:
Securities due within one year	469,000,000	2,335,000,000
Interest-bearing refundable deposit related to asset sale	150,000,000	150,000,000
Notes payable	1,482,000,000	825,000,000
Accounts payable	1,376,000,000	1,387,000,000
Customer deposits	380,000,000	370,000,000
Accrued taxes --
Accrued income taxes	13,000,000	10,000,000
Other accrued taxes	456,000,000	391,000,000
Accrued interest	251,000,000	237,000,000
Accrued vacation pay	217,000,000	212,000,000
Accrued compensation	303,000,000	433,000,000
Other regulatory liabilities, current	92,000,000	107,000,000
Other current liabilities	347,000,000	557,000,000
Total current liabilities	5,536,000,000	7,014,000,000
Senior notes -
Unamortized debt premium	79,000,000	88,000,000
Unamortized debt discount	(30,000,000)	(35,000,000)
Long-term Debt	21,344,000,000	19,274,000,000
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	10,563,000,000	9,938,000,000
Deferred credits related to income taxes	202,000,000	211,000,000
Accumulated deferred investment tax credits	966,000,000	894,000,000
Employee benefit obligations	1,461,000,000	2,540,000,000
Asset retirement obligations	2,006,000,000	1,748,000,000
Other cost of removal obligations	1,270,000,000	1,194,000,000
Other regulatory liabilities, deferred	475,000,000	289,000,000
Other deferred credits and liabilities	584,000,000	668,000,000
Total deferred credits and other liabilities	17,527,000,000	17,482,000,000
Total Liabilities	44,407,000,000	43,770,000,000
Redeemable Preferred Stock of Subsidiaries	375,000,000	375,000,000
Common Stockholders' Equity:
Common stock	4,461,000,000	4,389,000,000
Paid-in capital	5,362,000,000	4,855,000,000
Retained earnings	9,510,000,000	9,626,000,000
Accumulated other comprehensive loss	(75,000,000)	(123,000,000)
Total Common Stockholders' Equity	19,008,000,000	18,297,000,000
Total stockholders' equity	19,764,000,000	19,004,000,000
Total Liabilities and Stockholders' Equity	64,546,000,000	63,149,000,000
Commitments and Contingent Matters
Alabama Power [Member]
Current Assets:
Cash and cash equivalents	295,000,000	137,000,000
Receivables --
Customer accounts receivable	341,000,000	321,000,000
Unbilled revenues	142,000,000	138,000,000
Under recovered regulatory clause revenues	0	23,000,000
Other accounts and notes receivable	30,000,000	42,000,000
Affiliated companies	54,000,000	55,000,000
Accumulated provision for uncollectible accounts	(8,000,000)	(8,000,000)
Fossil fuel stock, at average cost	329,000,000	475,000,000
Materials and supplies, at average cost	375,000,000	395,000,000
Vacation pay	63,000,000	61,000,000
Prepaid expenses	57,000,000	81,000,000
Other regulatory assets, current	7,000,000	24,000,000
Other current assets	6,000,000	13,000,000
Total current assets	1,691,000,000	1,757,000,000
Property, Plant, and Equipment:
In service	22,092,000,000	21,407,000,000
Less accumulated depreciation	8,114,000,000	7,761,000,000
Plant in service, net of depreciation	13,978,000,000	13,646,000,000
Nuclear fuel, at amortized cost	332,000,000	354,000,000
Construction work in progress	748,000,000	438,000,000
Total property, plant, and equipment	15,058,000,000	14,438,000,000
Other Property and Investments:
Equity investments in unconsolidated subsidiaries	54,000,000	53,000,000
Nuclear decommissioning trusts, at fair value	714,000,000	605,000,000
Miscellaneous property and investments	80,000,000	78,000,000
Total other property and investments	848,000,000	736,000,000
Deferred Charges and Other Assets:
Deferred charges related to income taxes	519,000,000	525,000,000
Prepaid pension costs	276,000,000	0
Deferred under recovered regulatory clause revenues	25,000,000	11,000,000
Other regulatory assets, deferred	692,000,000	1,083,000,000
Other deferred charges and assets	142,000,000	162,000,000
Total deferred charges and other assets	1,654,000,000	1,781,000,000
Total Assets	19,251,000,000	18,712,000,000
Current Liabilities:
Securities due within one year	0	250,000,000
Affiliated	198,000,000	191,000,000
Accounts payable	339,000,000	318,000,000
Customer deposits	85,000,000	85,000,000
Accrued taxes --
Accrued income taxes	11,000,000	5,000,000
Other accrued taxes	33,000,000	33,000,000
Accrued interest	61,000,000	62,000,000
Accrued vacation pay	53,000,000	50,000,000
Accrued compensation	74,000,000	94,000,000
Other regulatory liabilities, current	37,000,000	3,000,000
Other current liabilities	41,000,000	52,000,000
Total current liabilities	932,000,000	1,143,000,000
Senior notes -
Long-term Debt	6,233,000,000	5,929,000,000
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	3,603,000,000	3,404,000,000
Deferred credits related to income taxes	75,000,000	79,000,000
Accumulated deferred investment tax credits	133,000,000	141,000,000
Employee benefit obligations	195,000,000	321,000,000
Asset retirement obligations	730,000,000	589,000,000
Other cost of removal obligations	828,000,000	759,000,000
Other regulatory liabilities, deferred	259,000,000	183,000,000
Deferred over recovered regulatory clause revenues	15,000,000	0
Other deferred credits and liabilities	61,000,000	81,000,000
Total deferred credits and other liabilities	5,899,000,000	5,557,000,000
Total Liabilities	13,064,000,000	12,629,000,000
Redeemable Preferred Stock of Subsidiaries	342,000,000	342,000,000
Redeemable Preferred Stock	342,000,000	342,000,000
Preference Stock	343,000,000	343,000,000
Common Stockholders' Equity:
Common stock	1,222,000,000	1,222,000,000
Paid-in capital	2,262,000,000	2,227,000,000
Retained earnings	2,044,000,000	1,976,000,000
Accumulated other comprehensive loss	(26,000,000)	(27,000,000)
Total Common Stockholders' Equity	5,502,000,000	5,398,000,000
Total stockholders' equity	5,502,000,000	5,398,000,000
Total Liabilities and Stockholders' Equity	19,251,000,000	18,712,000,000
Commitments and Contingent Matters
Georgia Power [Member]
Current Assets:
Cash and cash equivalents	30,000,000	45,000,000
Receivables --
Customer accounts receivable	512,000,000	484,000,000
Unbilled revenues	209,000,000	217,000,000
Joint owner accounts receivable	67,000,000	51,000,000
Other accounts and notes receivable	117,000,000	68,000,000
Affiliated companies	21,000,000	23,000,000
Accumulated provision for uncollectible accounts	(5,000,000)	(6,000,000)
Fossil fuel stock, at average cost	742,000,000	992,000,000
Materials and supplies, at average cost	409,000,000	452,000,000
Vacation pay	88,000,000	85,000,000
Prepaid income taxes	97,000,000	164,000,000
Other regulatory assets, current	66,000,000	72,000,000
Other current assets	54,000,000	104,000,000
Total current assets	2,407,000,000	2,751,000,000
Property, Plant, and Equipment:
In service	30,132,000,000	29,244,000,000
Less accumulated depreciation	10,970,000,000	10,431,000,000
Plant in service, net of depreciation	19,162,000,000	18,813,000,000
Other utility plant, net	240,000,000	263,000,000
Nuclear fuel, at amortized cost	523,000,000	497,000,000
Construction work in progress	3,500,000,000	2,893,000,000
Total property, plant, and equipment	23,425,000,000	22,466,000,000
Other Property and Investments:
Equity investments in unconsolidated subsidiaries	46,000,000	45,000,000
Nuclear decommissioning trusts, at fair value	751,000,000	698,000,000
Miscellaneous property and investments	44,000,000	44,000,000
Total other property and investments	841,000,000	787,000,000
Deferred Charges and Other Assets:
Deferred charges related to income taxes	718,000,000	733,000,000
Prepaid pension costs	118,000,000	0
Other regulatory assets, deferred	1,152,000,000	1,798,000,000
Other deferred charges and assets	246,000,000	268,000,000
Total deferred charges and other assets	2,234,000,000	2,799,000,000
Total Assets	28,907,000,000	28,803,000,000
Current Liabilities:
Securities due within one year	5,000,000	1,680,000,000
Notes payable	1,047,000,000	2,000,000
Affiliated	417,000,000	417,000,000
Accounts payable	472,000,000	436,000,000
Customer deposits	246,000,000	237,000,000
Accrued taxes --
Accrued income taxes	0	6,000,000
Other accrued taxes	321,000,000	260,000,000
Accrued interest	91,000,000	100,000,000
Accrued vacation pay	61,000,000	61,000,000
Accrued compensation	80,000,000	113,000,000
Liabilities from risk management activities	13,000,000	30,000,000
Other regulatory liabilities, current	17,000,000	73,000,000
Over recovered regulatory clause revenues, current	14,000,000	107,000,000
Other current liabilities	122,000,000	146,000,000
Total current liabilities	2,906,000,000	3,668,000,000
Senior notes -
Long-term Debt	8,633,000,000	7,994,000,000
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	5,200,000,000	4,861,000,000
Deferred credits related to income taxes	112,000,000	115,000,000
Accumulated deferred investment tax credits	203,000,000	208,000,000
Employee benefit obligations	542,000,000	950,000,000
Deferred capacity expense	162,000,000	169,000,000
Asset retirement obligations	1,210,000,000	1,097,000,000
Other cost of removal obligations	43,000,000	63,000,000
Other deferred credits and liabilities	201,000,000	308,000,000
Total deferred credits and other liabilities	7,511,000,000	7,602,000,000
Total Liabilities	19,050,000,000	19,264,000,000
Redeemable Preferred Stock	45,000,000	45,000,000
Preference Stock	221,000,000	221,000,000
Common Stockholders' Equity:
Common stock	398,000,000	398,000,000
Paid-in capital	5,633,000,000	5,585,000,000
Retained earnings	3,565,000,000	3,297,000,000
Accumulated other comprehensive loss	(5,000,000)	(7,000,000)
Total Common Stockholders' Equity	9,591,000,000	9,273,000,000
Total stockholders' equity	9,591,000,000	9,273,000,000
Total Liabilities and Stockholders' Equity	28,907,000,000	28,803,000,000
Commitments and Contingent Matters
Gulf Power [Member]
Current Assets:
Cash and cash equivalents	21,753,000	32,167,000
Receivables --
Customer accounts receivable	64,884,000	58,449,000
Unbilled revenues	57,282,000	53,363,000
Under recovered regulatory clause revenues	48,282,000	6,138,000
Other accounts and notes receivable	8,620,000	11,859,000
Affiliated companies	8,259,000	13,624,000
Accumulated provision for uncollectible accounts	(1,131,000)	(1,490,000)
Fossil fuel stock, at average cost	135,050,000	153,710,000
Materials and supplies, at average cost	54,935,000	53,365,000
Prepaid expenses	33,186,000	62,877,000
Other regulatory assets, current	18,536,000	30,576,000
Other current assets	6,120,000	2,690,000
Total current assets	455,776,000	477,328,000
Property, Plant, and Equipment:
In service	4,363,664,000	4,260,844,000
Less accumulated depreciation	1,211,336,000	1,168,055,000
Plant in service, net of depreciation	3,152,328,000	3,092,789,000
Construction work in progress	280,626,000	136,062,000
Total property, plant, and equipment	3,432,954,000	3,228,851,000
Other Property and Investments:
Total other property and investments	15,314,000	15,737,000
Deferred Charges and Other Assets:
Deferred charges related to income taxes	50,597,000	50,139,000
Prepaid pension costs	11,533,000	0
Other regulatory assets, deferred	340,415,000	372,294,000
Other deferred charges and assets	30,982,000	33,053,000
Total deferred charges and other assets	433,527,000	455,486,000
Total Assets	4,337,571,000	4,177,402,000
Current Liabilities:
Securities due within one year	75,000,000	60,000,000
Notes payable	135,878,000	127,002,000
Affiliated	76,897,000	66,161,000
Accounts payable	47,038,000	54,551,000
Customer deposits	34,433,000	34,749,000
Accrued taxes --
Accrued income taxes	45,000	45,000
Other accrued taxes	7,486,000	7,036,000
Accrued interest	10,272,000	12,364,000
Accrued compensation	11,657,000	14,966,000
Liabilities from risk management activities	6,470,000	16,529,000
Other regulatory liabilities, current	13,408,000	25,887,000
Other current liabilities	22,972,000	19,930,000
Total current liabilities	441,556,000	439,220,000
Senior notes -
Long-term Debt	1,158,163,000	1,185,870,000
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	734,355,000	648,952,000
Accumulated deferred investment tax credits	4,055,000	5,408,000
Employee benefit obligations	76,338,000	126,871,000
Deferred capacity expense	180,149,000	137,568,000
Other cost of removal obligations	228,148,000	213,413,000
Other regulatory liabilities, deferred	56,051,000	47,863,000
Other deferred credits and liabilities	77,126,000	93,497,000
Total deferred credits and other liabilities	1,356,222,000	1,273,572,000
Total Liabilities	2,955,941,000	2,898,662,000
Preference Stock	146,504,000	97,998,000
Common Stockholders' Equity:
Common stock	433,060,000	393,060,000
Paid-in capital	552,681,000	547,798,000
Retained earnings	250,494,000	241,465,000
Accumulated other comprehensive loss	(1,109,000)	(1,581,000)
Total Common Stockholders' Equity	1,235,126,000	1,180,742,000
Total stockholders' equity	1,235,126,000	1,180,742,000
Total Liabilities and Stockholders' Equity	4,337,571,000	4,177,402,000
Commitments and Contingent Matters
Mississippi Power [Member]
Current Assets:
Cash and cash equivalents	145,165,000	145,008,000
Receivables --
Customer accounts receivable	40,978,000	29,561,000
Unbilled revenues	38,895,000	32,688,000
Other accounts and notes receivable	4,600,000	7,517,000
Affiliated companies	34,920,000	27,160,000
Accumulated provision for uncollectible accounts	(3,018,000)	(373,000)
Fossil fuel stock, at average cost	113,285,000	176,378,000
Materials and supplies, at average cost	45,347,000	34,260,000
Prepaid income taxes	34,751,000	129,835,000
Other regulatory assets, current	52,496,000	55,302,000
Other current assets	9,357,000	17,170,000
Total current assets	516,776,000	654,506,000
Property, Plant, and Equipment:
In service	3,458,770,000	3,036,159,000
Less accumulated depreciation	1,095,352,000	1,065,474,000
Plant in service, net of depreciation	2,363,418,000	1,970,685,000
Construction work in progress	2,586,031,000	2,393,145,000
Total property, plant, and equipment	4,949,449,000	4,363,830,000
Other Property and Investments:
Total other property and investments	4,857,000	4,887,000
Deferred Charges and Other Assets:
Deferred charges related to income taxes	139,834,000	71,869,000
Other regulatory assets, deferred	200,620,000	236,225,000
Other deferred charges and assets	36,673,000	42,304,000
Total deferred charges and other assets	377,127,000	350,398,000
Total Assets	5,848,209,000	5,373,621,000
Current Liabilities:
Securities due within one year	13,789,000	276,471,000
Interest-bearing refundable deposit related to asset sale	150,000,000	150,000,000
Affiliated	70,299,000	54,769,000
Accounts payable	210,191,000	262,992,000
Customer deposits	14,379,000	14,202,000
Accrued taxes --
Accrued income taxes	5,590,000	2,339,000
Other accrued taxes	77,958,000	69,376,000
Accrued interest	47,144,000	30,376,000
Accrued compensation	9,324,000	15,706,000
Other regulatory liabilities, current	24,981,000	5,376,000
Over recovered regulatory clause liabilities	18,358,000	77,338,000
Other current liabilities	21,413,000	31,882,000
Total current liabilities	663,426,000	990,827,000
Senior notes -
Unamortized debt premium	71,807,000	80,912,000
Unamortized debt discount	(2,113,000)	(9,145,000)
Long-term Debt	2,167,067,000	1,564,462,000
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	72,808,000	244,958,000
Deferred credits related to income taxes	9,145,000	10,106,000
Accumulated deferred investment tax credits	284,248,000	370,554,000
Employee benefit obligations	94,430,000	157,421,000
Other cost of removal obligations	151,340,000	143,461,000
Other regulatory liabilities, deferred	140,880,000	56,984,000
Other deferred credits and liabilities	55,534,000	52,860,000
Total deferred credits and other liabilities	808,385,000	1,036,344,000
Total Liabilities	3,638,878,000	3,591,633,000
Redeemable Preferred Stock	32,780,000	32,780,000
Common Stockholders' Equity:
Common stock	37,691,000	37,691,000
Paid-in capital	2,376,595,000	1,401,520,000
Retained earnings	(229,871,000)	318,710,000
Accumulated other comprehensive loss	(7,864,000)	(8,713,000)
Total Common Stockholders' Equity	2,176,551,000	1,749,208,000
Total stockholders' equity	2,176,551,000	1,749,208,000
Total Liabilities and Stockholders' Equity	5,848,209,000	5,373,621,000
Commitments and Contingent Matters
Southern Power [Member]
Current Assets:
Cash and cash equivalents	68,744,000	28,592,000
Receivables --
Customer accounts receivable	73,497,000	62,857,000
Other accounts and notes receivable	3,983,000	3,135,000
Affiliated companies	38,391,000	38,269,000
Fossil fuel stock, at average cost	19,178,000	21,616,000
Materials and supplies, at average cost	54,780,000	46,370,000
Prepaid service agreements - current	81,206,000	80,629,000
Prepaid income taxes	54,732,000	4,498,000
Prepaid expenses	7,915,000	5,637,000
Assets from risk management activities	182,000	375,000
Total current assets	402,608,000	291,978,000
Property, Plant, and Equipment:
In service	4,696,134,000	4,059,839,000
Less accumulated depreciation	871,963,000	786,620,000
Plant in service, net of depreciation	3,824,171,000	3,273,219,000
Construction work in progress	9,843,000	24,835,000
Total property, plant, and equipment	3,834,014,000	3,298,054,000
Other Property and Investments:
Goodwill	1,839,000	1,839,000
Other intangible assets, net of amortization	43,505,000	45,979,000
Total other property and investments	45,344,000	47,818,000
Deferred Charges and Other Assets:
Prepaid long-term service agreements	73,676,000	100,921,000
Other deferred charges and assets -- affiliated	4,605,000	3,468,000
Other deferred charges and assets	68,853,000	37,688,000
Total deferred charges and other assets	147,134,000	142,077,000
Total Assets	4,429,100,000	3,779,927,000
Current Liabilities:
Securities due within one year	599,000	259,000
Notes payable	0	70,968,000
Affiliated	56,661,000	65,832,000
Accounts payable	20,747,000	26,204,000
Accrued taxes --
Accrued income taxes	161,000	87,000
Other accrued taxes	2,662,000	3,031,000
Accrued interest	28,352,000	22,259,000
Other current liabilities	18,492,000	8,932,000
Total current liabilities	127,674,000	197,572,000
Senior notes -
Unamortized debt premium	2,467,000	2,557,000
Unamortized debt discount	(1,013,000)	(286,000)
Long-term Debt	1,619,241,000	1,306,099,000
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	724,390,000	550,685,000
Deferred convertible investment tax credits	340,269,000	167,130,000
Deferred capacity revenues -- affiliated	15,279,000	19,514,000
Other deferred credits and liabilities -- affiliated	1,621,000	2,638,000
Other deferred credits and liabilities	7,896,000	5,863,000
Total deferred credits and other liabilities	1,089,455,000	745,830,000
Total Liabilities	2,836,370,000	2,249,501,000
Redeemable Noncontrolling Interest	28,778,000	8,069,000
Common Stockholders' Equity:
Common stock	0	0
Paid-in capital	1,029,035,000	1,027,548,000
Retained earnings	531,998,000	495,585,000
Accumulated other comprehensive loss	2,919,000	(776,000)
Total Common Stockholders' Equity	1,563,952,000	1,522,357,000
Total stockholders' equity	1,563,952,000	1,522,357,000
Total Liabilities and Stockholders' Equity	4,429,100,000	3,779,927,000
Commitments and Contingent Matters
Southern Power [Member] | 4.875% due 2015
Senior notes -
Senior notes	525,000,000	525,000,000
Southern Power [Member] | 6.375% due 2036
Senior notes -
Senior notes	200,000,000	200,000,000
Southern Power [Member] | 5.15% due 2041
Senior notes -
Senior notes	575,000,000	575,000,000
Southern Power [Member] | 5.25% due 2043
Senior notes -
Senior notes	300,000,000	0
Southern Power [Member] | 3.25% due 2032-2033
Senior notes -
Other long-term notes (3.25% due 2032-2033)	$ 17,787,000	$ 3,828,000