Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net Income	$ 313,000,000	$ 639,000,000	$ 410,000,000	$ 1,023,000,000
Qualifying hedges:
Changes in fair value, net of tax	0	(10,000,000)	0	(7,000,000)
Reclassification adjustment for amounts included in net income, net of tax	3,000,000	2,000,000	6,000,000	4,000,000
Pension and other post retirement benefit plans:
Reclassification adjustment for amounts included in net income, net of tax	2,000,000	1,000,000	3,000,000	2,000,000
Total other comprehensive income (loss)	5,000,000	(7,000,000)	9,000,000	(1,000,000)
Dividends on preferred and preference stock of subsidiaries	(16,000,000)	(16,000,000)	(32,000,000)	(32,000,000)
Comprehensive Income	302,000,000	616,000,000	387,000,000	990,000,000
Alabama Power [Member]
Net Income	183,000,000	195,000,000	334,000,000	331,000,000
Qualifying hedges:
Changes in fair value, net of tax	0	(11,000,000)	0	(7,000,000)
Reclassification adjustment for amounts included in net income, net of tax	1,000,000	0	1,000,000	0
Pension and other post retirement benefit plans:
Total other comprehensive income (loss)	1,000,000	(11,000,000)	1,000,000	(7,000,000)
Comprehensive Income	184,000,000	184,000,000	335,000,000	324,000,000
Georgia Power [Member]
Net Income	287,000,000	300,000,000	488,000,000	471,000,000
Qualifying hedges:
Reclassification adjustment for amounts included in net income, net of tax	0	0	1,000,000	1,000,000
Pension and other post retirement benefit plans:
Total other comprehensive income (loss)	0	0	1,000,000	1,000,000
Comprehensive Income	287,000,000	300,000,000	489,000,000	472,000,000
Gulf Power [Member]
Net Income	34,233,000	36,513,000	57,576,000	58,730,000
Qualifying hedges:
Reclassification adjustment for amounts included in net income, net of tax	143,000	143,000	286,000	286,000
Pension and other post retirement benefit plans:
Total other comprehensive income (loss)	143,000	143,000	286,000	286,000
Comprehensive Income	34,376,000	36,656,000	57,862,000	59,016,000
Mississippi Power [Member]
Net Income	(218,677,000)	35,460,000	(464,565,000)	61,148,000
Qualifying hedges:
Changes in fair value, net of tax	0	0	0	(478,000)
Reclassification adjustment for amounts included in net income, net of tax	213,000	212,000	425,000	238,000
Pension and other post retirement benefit plans:
Total other comprehensive income (loss)	213,000	212,000	425,000	(240,000)
Comprehensive Income	(218,464,000)	35,672,000	(464,140,000)	60,908,000
Southern Power [Member]
Net Income	27,922,000	46,602,000	57,114,000	75,918,000
Qualifying hedges:
Changes in fair value, net of tax	0	88,000	0	(186,000)
Reclassification adjustment for amounts included in net income, net of tax	1,647,000	1,529,000	3,281,000	3,039,000
Pension and other post retirement benefit plans:
Total other comprehensive income (loss)	1,647,000	1,617,000	3,281,000	2,853,000
Comprehensive Income	$ 29,569,000	$ 48,219,000	$ 60,395,000	$ 78,771,000