Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net Income	$ 869,000,000	$ 993,000,000	$ 1,279,000,000	$ 2,016,000,000
Qualifying hedges:
Changes in fair value, net of tax	0	(4,000,000)	0	(11,000,000)
Reclassification adjustment for amounts included in net income, net of tax	1,000,000	3,000,000	7,000,000	7,000,000
Pension and other post retirement benefit plans:
Reclassification adjustment for amounts included in net income, net of tax	1,000,000	1,000,000	4,000,000	3,000,000
Total other comprehensive income (loss)	2,000,000	0	11,000,000	(1,000,000)
Dividends on preferred and preference stock of subsidiaries	(17,000,000)	(17,000,000)	(49,000,000)	(49,000,000)
Comprehensive Income	854,000,000	976,000,000	1,241,000,000	1,966,000,000
Alabama Power [Member]
Net Income	268,000,000	290,000,000	602,000,000	621,000,000
Qualifying hedges:
Changes in fair value, net of tax	0	(2,000,000)	0	(9,000,000)
Reclassification adjustment for amounts included in net income, net of tax	0	0	1,000,000	0
Pension and other post retirement benefit plans:
Total other comprehensive income (loss)	0	(2,000,000)	1,000,000	(9,000,000)
Comprehensive Income	268,000,000	288,000,000	603,000,000	612,000,000
Georgia Power [Member]
Net Income	491,000,000	529,000,000	979,000,000	1,000,000,000
Qualifying hedges:
Reclassification adjustment for amounts included in net income, net of tax	1,000,000	1,000,000	2,000,000	2,000,000
Pension and other post retirement benefit plans:
Total other comprehensive income (loss)	1,000,000	1,000,000	2,000,000	2,000,000
Comprehensive Income	492,000,000	530,000,000	981,000,000	1,002,000,000
Gulf Power [Member]
Net Income	47,005,000	49,305,000	104,581,000	108,035,000
Qualifying hedges:
Reclassification adjustment for amounts included in net income, net of tax	93,000	143,000	379,000	429,000
Pension and other post retirement benefit plans:
Total other comprehensive income (loss)	93,000	143,000	379,000	429,000
Comprehensive Income	47,098,000	49,448,000	104,960,000	108,464,000
Mississippi Power [Member]
Net Income	(23,682,000)	55,058,000	(488,247,000)	116,206,000
Qualifying hedges:
Changes in fair value, net of tax	0	1,000	0	(477,000)
Reclassification adjustment for amounts included in net income, net of tax	212,000	212,000	637,000	450,000
Pension and other post retirement benefit plans:
Total other comprehensive income (loss)	212,000	213,000	637,000	(27,000)
Comprehensive Income	(23,470,000)	55,271,000	(487,610,000)	116,179,000
Southern Power [Member]
Net Income	85,153,000	68,376,000	142,267,000	144,294,000
Qualifying hedges:
Changes in fair value, net of tax	0	338,000	0	152,000
Reclassification adjustment for amounts included in net income, net of tax	338,000	1,569,000	3,619,000	4,608,000
Pension and other post retirement benefit plans:
Total other comprehensive income (loss)	338,000	1,907,000	3,619,000	4,760,000
Comprehensive Income	$ 85,491,000	$ 70,283,000	$ 145,886,000	$ 149,054,000