Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Consolidated Net Income	$ 384,000,000	$ 438,000,000
Net Income After Dividends on Preferred and Preference Stock	368,000,000	422,000,000
Qualifying hedges:
Changes in fair value, net of tax	3,000,000	3,000,000
Reclassification adjustment for amounts included in net income, net of tax	2,000,000	3,000,000
Marketable securities:
Change in fair value, net of tax of $- and $-, respectively		(1,000,000)
Pension and other postretirement benefit plans:
Reclassification adjustment for amounts included in net income, net of tax of $1 and $1, respectively	1,000,000	(1,000,000)
Total other comprehensive income (loss)	6,000,000	4,000,000
Dividends on preferred and preference stock of subsidiaries	(16,000,000)	(16,000,000)
Consolidated Comprehensive Income	374,000,000	426,000,000
Alabama Power [Member]
Consolidated Net Income	136,000,000	162,000,000
Net Income After Dividends on Preferred and Preference Stock	126,000,000	152,000,000
Qualifying hedges:
Changes in fair value, net of tax	4,000,000	2,000,000
Pension and other postretirement benefit plans:
Total other comprehensive income (loss)	4,000,000	2,000,000
Dividends on preferred and preference stock of subsidiaries	(10,000,000)	(10,000,000)
Consolidated Comprehensive Income	130,000,000	154,000,000
Georgia Power [Member]
Consolidated Net Income	171,000,000	210,000,000
Net Income After Dividends on Preferred and Preference Stock	167,000,000	206,000,000
Qualifying hedges:
Reclassification adjustment for amounts included in net income, net of tax	1,000,000	1,000,000
Pension and other postretirement benefit plans:
Dividends on preferred and preference stock of subsidiaries	(4,000,000)	(4,000,000)
Consolidated Comprehensive Income	168,000,000	207,000,000
Gulf Power [Member]
Consolidated Net Income	22,217,000	13,242,000
Net Income After Dividends on Preferred and Preference Stock	20,666,000	11,691,000
Qualifying hedges:
Reclassification adjustment for amounts included in net income, net of tax	143,000	143,000
Pension and other postretirement benefit plans:
Total other comprehensive income (loss)	143,000	143,000
Dividends on preferred and preference stock of subsidiaries	(1,551,000)	(1,551,000)
Consolidated Comprehensive Income	20,809,000	11,834,000
Mississippi Power [Member]
Consolidated Net Income	25,688,000	15,050,000
Net Income After Dividends on Preferred and Preference Stock	25,255,000	14,617,000
Qualifying hedges:
Changes in fair value, net of tax	(478,000)	(2,000)
Reclassification adjustment for amounts included in net income, net of tax	26,000
Pension and other postretirement benefit plans:
Total other comprehensive income (loss)	(452,000)	(2,000)
Dividends on preferred and preference stock of subsidiaries	(433,000)	(433,000)
Consolidated Comprehensive Income	24,803,000	14,615,000
Southern Power [Member]
Consolidated Net Income	29,316,000	37,743,000
Qualifying hedges:
Changes in fair value, net of tax	(274,000)	643,000
Reclassification adjustment for amounts included in net income, net of tax	1,510,000	1,630,000
Pension and other postretirement benefit plans:
Total other comprehensive income (loss)	1,236,000	2,273,000
Consolidated Comprehensive Income	$ 30,552,000	$ 40,016,000