Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Pension and other post retirement benefit plans:
Total other comprehensive income (loss)			$ 7	$ 4
Southern Company [Member]
Net Income (loss)	$ 643	$ 628	1,169	996
Qualifying hedges:
Changes in fair value, net of tax	19	0	1	0
Reclassification adjustment for amounts included in net income, net of tax	2	1	3	2
Pension and other post retirement benefit plans:
Reclassification adjustment for amounts included in net income, net of tax	1	1	3	2
Total other comprehensive income (loss)	22	2	7	4
Dividends on preferred and preference stock of subsidiaries	(14)	(17)	(31)	(34)
Comprehensive Income (Loss)	651	613	1,145	966
Alabama Power [Member]
Net Income (loss)	207	183	386	380
Qualifying hedges:
Changes in fair value, net of tax	5	0	1	0
Reclassification adjustment for amounts included in net income, net of tax	0	0	1	1
Pension and other post retirement benefit plans:
Total other comprehensive income (loss)	5	0	2	1
Dividends on preferred and preference stock of subsidiaries	(7)	(10)	(17)	(20)
Comprehensive Income (Loss)	212	183	388	381
Georgia Power [Member]
Net Income (loss)	282	316	522	586
Qualifying hedges:
Changes in fair value, net of tax	14	0	0	0
Reclassification adjustment for amounts included in net income, net of tax	1	1	1	1
Pension and other post retirement benefit plans:
Total other comprehensive income (loss)	15	1	1	1
Dividends on preferred and preference stock of subsidiaries	(5)	(5)	(9)	(9)
Comprehensive Income (Loss)	297	317	523	587
Gulf Power [Member]
Net Income (loss)	38	36	77	75
Pension and other post retirement benefit plans:
Total other comprehensive income (loss)	0	0	0	0
Dividends on preferred and preference stock of subsidiaries	(3)	(2)	(5)	(4)
Comprehensive Income (Loss)	38	36	77	75
Mississippi Power [Member]
Net Income (loss)	50	63	85	(109)
Pension and other post retirement benefit plans:
Total other comprehensive income (loss)	0	0	0	0
Dividends on preferred and preference stock of subsidiaries	(1)	(1)	(1)	(1)
Comprehensive Income (Loss)	50	63	85	(109)
Southern Power [Member]
Net Income (loss)	52	32	85	66
Pension and other post retirement benefit plans:
Total other comprehensive income (loss)	0	0	0	0
Less: Comprehensive income attributable to noncontrolling interest/Dividends on preferred and preference stock of subsidiaries	6	1	6	2
Comprehensive Income (Loss)	$ 46	$ 31	$ 79	$ 64