Introduction (Tables)

6 Months Ended

Jun. 30, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Asset Retirement Obligations

As of June 30, 2016, details of the asset retirement obligations (ARO) included in the registrants' Condensed Balance Sheets were as follows:

	Southern Company			Alabama Power			Georgia Power			Gulf Power			Mississippi Power			Southern Power
	(in millions)
Balance at beginning of year	$	3,759		$	1,448		$	1,916		$	130		$	177		$	21
Liabilities incurred	9			5			—			—			—			4
Liabilities settled	(66		)	(6		)	(52		)	(1		)	(7		)	—
Accretion	77			36			34			1			2			1
Cash flow revisions	699			19			673			3			6			2
Balance at end of period	$	4,478		$	1,502		$	2,571		$	133		$	178		$	28

Schedule of Goodwill and Other Intangible Assets

Goodwill and other intangible assets consisted of the following:

	At June 30, 2016
	Estimated Useful Life	Gross Carrying Amount		Accumulated Amortization			Intangible Assets, Net
		(in millions)
Intangibles subject to amortization:
Southern Company
Customer relationships	14-26 years	$	47	$	—		$	47
Trade names	5-9 years	43		—			43
Patents	3-10 years	4		—			4
Backlog	5 years	5		—			5
Southern Power
PPA fair value adjustments	20 years	330		(14		)	316
Total intangibles subject to amortization		$	429	$	(14	)	$	415
Intangibles not subject to amortization:
Southern Company
Federal Communications Commission licenses		$	75	$	—		$	75
Goodwill:
Southern Company		$	262	$	—		$	262
Southern Power		2		—			2
Total goodwill and other intangible assets		$	768	$	(14	)	$	754