Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Southern Company [Member]
Operating Activities:
Consolidated net income	$ 996,000,000	$ 410,000,000
Adjustments to reconcile consolidated net income to net cash provided from operating activities --
Depreciation and amortization, total	1,182,000,000	1,140,000,000
Deferred income taxes	46,000,000	(141,000,000)
Allowance for equity funds used during construction	(119,000,000)	(86,000,000)
Stock based compensation expense	40,000,000	37,000,000
Estimated loss on Kemper IGCC	380,000,000	990,000,000
Other, net	22,000,000	48,000,000
Changes in certain current assets and liabilities --
-Receivables	(579,000,000)	(325,000,000)
-Fossil fuel stock	419,000,000	185,000,000
-Materials and supplies	(20,000,000)	52,000,000
-Other current assets	(88,000,000)	(55,000,000)
-Accounts payable	(231,000,000)	(52,000,000)
-Accrued taxes	72,000,000	6,000,000
-Accrued compensation	(40,000,000)	(257,000,000)
-Other current liabilities	(10,000,000)	(5,000,000)
Net cash provided from operating activities	2,070,000,000	1,947,000,000
Investing Activities:
Property additions	(2,692,000,000)	(2,597,000,000)
Investment of restricted cash	0	(98,000,000)
Distribution of restricted cash	11,000,000	23,000,000
Nuclear decommissioning trust fund purchases	(445,000,000)	(548,000,000)
Nuclear decommissioning trust fund sales	443,000,000	546,000,000
Cost of removal, net of salvage	(54,000,000)	(56,000,000)
Change in construction payables	89,000,000	114,000,000
Prepaid long-term service agreement	(93,000,000)	(57,000,000)
Other investing activities	(28,000,000)	44,000,000
Net cash used for investing activities	(2,769,000,000)	(2,629,000,000)
Financing Activities:
Increase (decrease) in notes payable, net	339,000,000	767,000,000
Proceeds --
Long-term debt issuances	1,314,000,000	1,197,000,000
Interest-bearing refundable deposit related to asset sale	75,000,000	0
Preference stock	0	50,000,000
Common stock issuances	318,000,000	161,000,000
Redemptions --
Long-term debt	(431,000,000)	(792,000,000)
Common stock repurchased	(5,000,000)	(18,000,000)
Payment of common stock dividends	(920,000,000)	(870,000,000)
Payment of dividends on preferred and preference stock of subsidiaries	(34,000,000)	(32,000,000)
Other financing activities	(33,000,000)	15,000,000
Net cash provided from (used for) financing activities	623,000,000	478,000,000
Net Change in Cash and Cash Equivalents	(76,000,000)	(204,000,000)
Cash and Cash Equivalents at Beginning of Period	659,000,000	628,000,000
Cash and Cash Equivalents at End of Period	583,000,000	424,000,000
Cash paid (received) during the period for --
Interest (net of capitalized amounts)	365,000,000	384,000,000
Income taxes, net	212,000,000	142,000,000
Noncash transactions - accrued property additions at end of period	509,000,000	637,000,000
Alabama Power [Member]
Operating Activities:
Consolidated net income	380,000,000	334,000,000
Adjustments to reconcile consolidated net income to net cash provided from operating activities --
Depreciation and amortization, total	416,000,000	403,000,000
Deferred income taxes	49,000,000	53,000,000
Allowance for equity funds used during construction	(21,000,000)	(16,000,000)
Regulatory deferrals	(44,000,000)	(9,000,000)
Other, net	4,000,000	(3,000,000)
Changes in certain current assets and liabilities --
-Receivables	(120,000,000)	(65,000,000)
-Fossil fuel stock	94,000,000	76,000,000
-Materials and supplies	(2,000,000)	22,000,000
-Other current assets	(57,000,000)	(45,000,000)
-Accounts payable	(94,000,000)	(93,000,000)
-Accrued taxes	104,000,000	60,000,000
-Accrued compensation	(17,000,000)	(54,000,000)
-Retail fuel cost over recovery - short-term	(23,000,000)	12,000,000
-Other current liabilities	5,000,000	4,000,000
Net cash provided from operating activities	674,000,000	679,000,000
Investing Activities:
Property additions	(637,000,000)	(518,000,000)
Nuclear decommissioning trust fund purchases	(121,000,000)	(120,000,000)
Nuclear decommissioning trust fund sales	121,000,000	120,000,000
Cost of removal, net of salvage	(30,000,000)	(19,000,000)
Change in construction payables	71,000,000	(21,000,000)
Other investing activities	(13,000,000)	30,000,000
Net cash used for investing activities	(609,000,000)	(528,000,000)
Financing Activities:
Increase (decrease) in notes payable, net	27,000,000	46,000,000
Proceeds --
Capital contributions from parent company	12,000,000	10,000,000
Redemptions --
Payment of preferred and preference stock dividends	(20,000,000)	(20,000,000)
Payment of common stock dividends	(275,000,000)	(265,000,000)
Other financing activities	1,000,000	0
Net cash provided from (used for) financing activities	(255,000,000)	(229,000,000)
Net Change in Cash and Cash Equivalents	(190,000,000)	(78,000,000)
Cash and Cash Equivalents at Beginning of Period	295,000,000	137,000,000
Cash and Cash Equivalents at End of Period	105,000,000	59,000,000
Cash paid (received) during the period for --
Interest (net of capitalized amounts)	114,000,000	119,000,000
Income taxes, net	141,000,000	146,000,000
Noncash transactions - accrued property additions at end of period	89,000,000	10,000,000
Georgia Power [Member]
Operating Activities:
Consolidated net income	586,000,000	488,000,000
Adjustments to reconcile consolidated net income to net cash provided from operating activities --
Depreciation and amortization, total	503,000,000	487,000,000
Deferred income taxes	121,000,000	126,000,000
Allowance for equity funds used during construction	(16,000,000)	(13,000,000)
Retail fuel cost over recovery - long-term	(44,000,000)	(123,000,000)
Deferred expenses	31,000,000	31,000,000
Other, net	(12,000,000)	(8,000,000)
Changes in certain current assets and liabilities --
-Receivables	(353,000,000)	(123,000,000)
-Fossil fuel stock	255,000,000	56,000,000
-Prepaid income taxes	(7,000,000)	5,000,000
-Other current assets	(14,000,000)	34,000,000
-Accounts payable	(140,000,000)	43,000,000
-Accrued taxes	(65,000,000)	(14,000,000)
-Accrued compensation	(15,000,000)	(66,000,000)
-Retail fuel cost over recovery - short-term	(14,000,000)	1,000,000
-Other current liabilities	27,000,000	7,000,000
Net cash provided from operating activities	843,000,000	931,000,000
Investing Activities:
Property additions	(906,000,000)	(765,000,000)
Investment of restricted cash	0	(18,000,000)
Distribution of restricted cash	0	18,000,000
Nuclear decommissioning trust fund purchases	(324,000,000)	(427,000,000)
Nuclear decommissioning trust fund sales	322,000,000	426,000,000
Cost of removal, net of salvage	(12,000,000)	(27,000,000)
Prepaid long-term service agreement	(47,000,000)	(9,000,000)
Change in construction payables, net of joint owner portion	52,000,000	(2,000,000)
Other investing activities	(2,000,000)	(3,000,000)
Net cash used for investing activities	(917,000,000)	(807,000,000)
Financing Activities:
Increase (decrease) in notes payable, net	(359,000,000)	314,000,000
Proceeds --
Capital contributions from parent company	24,000,000	21,000,000
Pollution control revenue bonds issuances	0	18,000,000
Senior notes issuances	0	650,000,000
FFB loan	1,000,000,000	0
Redemptions --
Pollution control revenue bonds	(37,000,000)	(18,000,000)
Senior notes	0	(650,000,000)
Payment of preferred and preference stock dividends	(9,000,000)	(9,000,000)
Payment of common stock dividends	(477,000,000)	(454,000,000)
FFB loan issuance costs	(49,000,000)	(1,000,000)
Other financing activities	(3,000,000)	(11,000,000)
Net cash provided from (used for) financing activities	90,000,000	(140,000,000)
Net Change in Cash and Cash Equivalents	16,000,000	(16,000,000)
Cash and Cash Equivalents at Beginning of Period	30,000,000	45,000,000
Cash and Cash Equivalents at End of Period	46,000,000	29,000,000
Cash paid (received) during the period for --
Interest (net of capitalized amounts)	157,000,000	169,000,000
Income taxes, net	145,000,000	100,000,000
Noncash transactions - accrued property additions at end of period	267,000,000	238,000,000
Gulf Power [Member]
Operating Activities:
Consolidated net income	75,341,000	57,576,000
Adjustments to reconcile consolidated net income to net cash provided from operating activities --
Depreciation and amortization, total	74,689,000	77,627,000
Deferred income taxes	19,627,000	36,407,000
Allowance for equity funds used during construction	(5,081,000)	(2,655,000)
Pension, postretirement, and other employee benefits	2,851,000	5,452,000
Stock based compensation expense	1,111,000	1,028,000
Other, net	(3,396,000)	2,209,000
Changes in certain current assets and liabilities --
-Receivables	(56,873,000)	(59,770,000)
-Prepayments	1,463,000	1,271,000
-Fossil fuel stock	39,187,000	19,332,000
-Materials and supplies	1,170,000	(987,000)
-Prepaid income taxes	9,289,000	(2,822,000)
-Other current assets	(1,024,000)	13,000
-Accounts payable	831,000	(9,703,000)
-Accrued taxes	12,483,000	13,632,000
-Accrued compensation	(109,000)	(8,308,000)
-Over recovered regulatory clause revenues	9,129,000	(15,659,000)
-Other current liabilities	(3,522,000)	(1,199,000)
Net cash provided from operating activities	177,166,000	113,444,000
Investing Activities:
Property additions	(158,863,000)	(137,283,000)
Cost of removal, net of salvage	(6,032,000)	(7,010,000)
Change in construction payables	(1,684,000)	6,307,000
Payments pursuant to long-term service agreements	(3,953,000)	(2,855,000)
Other investing activities	46,000	120,000
Net cash used for investing activities	(170,486,000)	(140,721,000)
Financing Activities:
Increase (decrease) in notes payable, net	2,702,000	1,230,000
Proceeds --
Capital contributions from parent company	2,268,000	1,419,000
Pollution control revenue bonds issuances	42,075,000	63,000,000
Preference stock	0	50,000,000
Common stock issuances	50,000,000	40,000,000
Senior notes issuances	0	90,000,000
Redemptions --
Pollution control revenue bonds	(29,075,000)	(63,000,000)
Payment of preferred and preference stock dividends	(4,501,000)	(3,101,000)
Payment of common stock dividends	(61,600,000)	(57,700,000)
Other financing activities	(602,000)	(3,105,000)
Net cash provided from (used for) financing activities	1,267,000	118,743,000
Net Change in Cash and Cash Equivalents	7,947,000	91,466,000
Cash and Cash Equivalents at Beginning of Period	21,753,000	32,167,000
Cash and Cash Equivalents at End of Period	29,700,000	123,633,000
Cash paid (received) during the period for --
Interest (net of capitalized amounts)	25,860,000	26,987,000
Income taxes, net	16,712,000	428,000
Noncash transactions - accrued property additions at end of period	30,951,000	29,036,000
Mississippi Power [Member]
Operating Activities:
Consolidated net income	(108,687,000)	(464,565,000)
Adjustments to reconcile consolidated net income to net cash provided from operating activities --
Depreciation and amortization, total	49,869,000	43,263,000
Deferred income taxes	(107,556,000)	(337,167,000)
Investment tax credits	27,750,000	66,474,000
Allowance for equity funds used during construction	(75,462,000)	(55,116,000)
Pension, postretirement, and other employee benefits	2,551,000	6,184,000
Stock based compensation expense	1,878,000	1,547,000
Regulatory assets associated with Kemper IGCC	(26,091,000)	(13,399,000)
Estimated loss on Kemper IGCC	380,000,000	912,000,000
Kemper regulatory deferral	67,125,000	26,979,000
Other, net	2,266,000	1,068,000
Changes in certain current assets and liabilities --
-Receivables	(11,972,000)	(37,431,000)
-Under recovered regulatory clause revenues	(19,842,000)	0
-Fossil fuel stock	31,707,000	34,205,000
-Materials and supplies	(5,607,000)	(6,509,000)
-Prepaid income taxes	(12,261,000)	8,823,000
-Other current assets	1,063,000	(4,879,000)
-Accounts payable	4,424,000	(5,417,000)
-Accrued taxes	(22,513,000)	(24,101,000)
-Accrued interest	13,256,000	8,502,000
-Accrued compensation	3,634,000	(10,461,000)
-Over recovered regulatory clause revenues	(18,358,000)	(27,838,000)
-Other current liabilities	1,031,000	282,000
Net cash provided from operating activities	178,205,000	122,444,000
Investing Activities:
Property additions	(691,859,000)	(789,021,000)
Cost of removal, net of salvage	(5,358,000)	(2,033,000)
Change in construction payables	(28,326,000)	23,314,000
Capital grant proceeds	0	4,500,000
Other investing activities	(7,920,000)	(11,172,000)
Net cash used for investing activities	(733,463,000)	(774,412,000)
Proceeds --
Capital contributions from parent company	211,027,000	351,198,000
Bonds-Other	12,318,000	15,814,000
Interest-bearing refundable deposit related to asset sale	75,000,000	0
Long-term debt issuance from parent company	220,000,000	0
Other long-term debt issuances	250,000,000	350,000,000
Redemptions — Capital leases	(1,254,000)	0
Redemptions --
Payment of preferred and preference stock dividends	(866,000)	(866,000)
Payment of common stock dividends	0	(71,956,000)
Return of capital	(109,860,000)	(16,424,000)
Other financing activities	(381,000)	(1,431,000)
Net cash provided from (used for) financing activities	655,984,000	626,335,000
Net Change in Cash and Cash Equivalents	100,726,000	(25,633,000)
Cash and Cash Equivalents at Beginning of Period	145,165,000	145,008,000
Cash and Cash Equivalents at End of Period	245,891,000	119,375,000
Cash paid (received) during the period for --
Interest (net of capitalized amounts)	8,349,000	13,423,000
Income taxes, net	(33,621,000)	(64,062,000)
Noncash transactions - accrued property additions at end of period	135,675,000	238,177,000
Southern Power [Member]
Operating Activities:
Consolidated net income	66,330,000	57,114,000
Adjustments to reconcile consolidated net income to net cash provided from operating activities --
Depreciation and amortization, total	100,111,000	90,351,000
Deferred income taxes	(3,162,000)	13,693,000
Investment tax credits	26,134,000	16,443,000
Deferred revenues	(24,342,000)	(23,444,000)
Other, net	7,893,000	11,909,000
Changes in certain current assets and liabilities --
-Receivables	(34,252,000)	(23,335,000)
-Fossil fuel stock	(1,006,000)	(377,000)
-Materials and supplies	(3,126,000)	(2,560,000)
-Prepaid income taxes	21,406,000	(19,747,000)
-Other current assets	2,051,000	2,725,000
-Accounts payable	23,593,000	(7,580,000)
-Accrued taxes	7,095,000	21,048,000
-Accrued interest	94,000	(41,000)
-Other current liabilities	5,027,000	(390,000)
Net cash provided from operating activities	193,846,000	135,809,000
Investing Activities:
Plant acquisition	(213,470,000)	(111,600,000)
Property additions	(11,048,000)	(252,271,000)
Investment of restricted cash	0	(20,000,000)
Change in construction payables	(3,426,000)	106,795,000
Payments pursuant to long-term service agreements	(22,677,000)	(22,469,000)
Other investing activities	(10,860,000)	(206,000)
Net cash used for investing activities	(261,481,000)	(299,751,000)
Financing Activities:
Increase (decrease) in notes payable, net	73,482,000	195,142,000
Proceeds --
Capital contributions from parent company	(3,417,000)	1,394,000
Other long-term debt issuances	9,941,000	10,249,000
Redemptions --
Other long-term debt	(818,000)	(220,000)
Distributions to noncontrolling interest	(150,000)	(146,000)
Contributions from noncontrolling interest	7,166,000	7,683,000
Payment of common stock dividends	(65,560,000)	(64,560,000)
Other financing activities	1,863,000	675,000
Net cash provided from (used for) financing activities	22,507,000	150,217,000
Net Change in Cash and Cash Equivalents	(45,128,000)	(13,725,000)
Cash and Cash Equivalents at Beginning of Period	68,744,000	28,592,000
Cash and Cash Equivalents at End of Period	23,616,000	14,867,000
Cash paid (received) during the period for --
Interest (net of capitalized amounts)	42,745,000	34,924,000
Income taxes, net	(59,148,000)	(3,799,000)
Noncash transactions - accrued property additions at end of period	$ 5,297,000	$ 136,998,000