Quarterly Financial Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information [Line Items]

Summarized quarterly financial data

Summarized quarterly financial information for 2016 and 2015 is as follows:

					Consolidated Net Income Attributable to Southern Company		Per Common Share
	Operating Revenues		Operating Income				Basic Earnings		Diluted Earnings				Trading Price Range
Quarter Ended											Dividends		High		Low
	(in millions)
March 2016	$	3,992	$	940	$	489	$	0.53	$	0.53	$	0.5425	$	51.73	$	46.00
June 2016	4,459		1,185		623		0.67		0.66		0.5600		53.64		47.62
September 2016	6,264		1,917		1,139		1.18		1.17		0.5600		54.64		50.00
December 2016	5,181		587		197		0.20		0.20		0.5600		52.23		46.20
March 2015	$	4,183	$	957	$	508	$	0.56	$	0.56	$	0.5250	$	53.16	$	43.55
June 2015	4,337		1,098		629		0.69		0.69		0.5425		45.44		41.40
September 2015	5,401		1,649		959		1.05		1.05		0.5425		46.84		41.81
December 2015	3,568		578		271		0.30		0.30		0.5425		47.50		43.38

Alabama Power [Member]

Quarterly Financial Information [Line Items]

Summarized quarterly financial data

Summarized quarterly financial information for 2016 and 2015 is as follows:

Quarter Ended	Operating Revenues		Operating Income		Net Income After Dividends on Preferred and Preference Stock
	(in millions)
March 2016	$	1,331	$	333	$	156
June 2016	1,444		430		213
September 2016	1,785		650		351
December 2016	1,329		252		102
March 2015	$	1,401	$	346	$	169
June 2015	1,455		398		200
September 2015	1,695		555		295
December 2015	1,217		264		121

Georgia Power [Member]

Quarterly Financial Information [Line Items]

Summarized quarterly financial data

Summarized quarterly financial information for 2016 and 2015 is as follows:

Quarter Ended	Operating Revenues		Operating Income		Net Income After Dividends on Preferred and Preference Stock
	(in millions)
March 2016	$	1,872	$	509	$	269
June 2016	2,051		656		349
September 2016	2,698		1,054		599
December 2016	1,762		258		113
March 2015	$	1,978	$	454	$	236
June 2015	2,016		554		277
September 2015	2,691		964		551
December 2015	1,641		376		196

Gulf Power [Member]

Quarterly Financial Information [Line Items]

Summarized quarterly financial data

Summarized quarterly financial information for 2016 and 2015 is as follows:

Quarter Ended	Operating Revenues		Operating Income		Net Income After Dividends on Preference Stock
	(in millions)
March 2016	$	335	$	65	$	29
June 2016	365		74		34
September 2016	436		90		45
December 2016	349		54		23
March 2015	$	357	$	72	$	37
June 2015	384		69		35
September 2015	429		91		48
December 2015	313		58		28

Mississippi Power [Member]

Quarterly Financial Information [Line Items]

Summarized quarterly financial data

Summarized quarterly financial information for 2016 and 2015 is as follows:

Quarter Ended	Operating Revenues		Operating Income (Loss)			Net Income (Loss) After Dividends on Preferred Stock
	(in millions)
March 2016	$	257	$	(10	)	$	11
June 2016	277		(28		)	2
September 2016	352		9			26
December 2016	277		(166		)	(89		)
March 2015	$	276	$	24		$	35
June 2015	275		12			49
September 2015	341		(66		)	(21		)
December 2015	246		(143		)	(71		)

Southern Power [Member]

Quarterly Financial Information [Line Items]

Summarized quarterly financial data

Summarized quarterly financial information for 2016 and 2015 is as follows:

Quarter Ended	Operating Revenues		Operating Income		Net Income Attributable to the Company
	(in millions)
March 2016	$	315	$	47	$	50
June 2016	373		81		89
September 2016	500		134		176
December 2016	389		28		23
March 2015	$	348	$	67	$	33
June 2015	337		75		46
September 2015	401		129		102
December 2015	304		55		34

Southern Company Gas [Member]

Quarterly Financial Information [Line Items]

Summarized quarterly financial data

Summarized quarterly financial information for the successor period of July 1, 2016 through December 31, 2016 and for the predecessor periods of January 1, 2016 through June 30, 2016 and the year ended December 31, 2015 are as follows:

Quarter Ended	Operating Revenues		Operating Income (Loss)			EBIT			Net Income (Loss)
	(in millions)
Predecessor - January 1, 2016 through June 30, 2016
March 2016	$	1,334	$	348		$	351		$	182
June 2016	571		(27		)	(23		)	(51		)
Successor - July 1, 2016 through December 31, 2016
September 2016	$	543	$	12		$	50		$	4
December 2016	1,109		185			221			110
Predecessor - 2015
March 2015	$	1,721	$	364		$	367		$	193
June 2015	674		107			111			42
September 2015	584		59			62			11
December 2015	962		216			221			107