Introduction (Tables)

3 Months Ended

Mar. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Goodwill

As of March 31, 2017 and December 31, 2016, goodwill was as follows:

	Goodwill
	(in millions)
Southern Company	$	6,251
Southern Power	$	2
Southern Company Gas
Gas distribution operations	$	4,702
Gas marketing services	1,265
Southern Company Gas total	$	5,967

Schedule of Goodwill and Other Intangible Assets

Other intangible assets were as follows:

	As of March 31, 2017							As of December 31, 2016
	Gross Carrying Amount		Accumulated Amortization			Other Intangible Assets, Net		Gross Carrying Amount		Accumulated Amortization			Other Intangible Assets, Net
	(in millions)							(in millions)
Southern Company
Other intangible assets subject to amortization:
Customer relationships	$	268	$	(44	)	$	224	$	268	$	(32	)	$	236
Trade names	158		(8		)	150		158		(5		)	153
Patents	4		—			4		4		—			4
Backlog	5		(1		)	4		5		(1		)	4
Storage and transportation contracts	64		(15		)	49		64		(2		)	62
Software and other	2		(1		)	1		2		—			2
PPA fair value adjustments	456		(28		)	428		456		(22		)	434
Total other intangible assets subject to amortization	$	957	$	(97	)	$	860	$	957	$	(62	)	$	895
Other intangible assets not subject to amortization:
Federal Communications Commission licenses	$	75	$	—		$	75	$	75	$	—		$	75
Total other intangible assets	$	1,032	$	(97	)	$	935	$	1,032	$	(62	)	$	970
Southern Power
Other intangible assets subject to amortization:
PPA fair value adjustments	$	456	$	(28	)	$	428	$	456	$	(22	)	$	434
Southern Company Gas
Other intangible assets subject to amortization:
Gas marketing services
Customer relationships	$	221	$	(41	)	$	180	$	221	$	(30	)	$	191
Trade names	115		(4		)	111		115		(2		)	113
Wholesale gas services
Storage and transportation contracts	64		(15		)	49		64		(2		)	62
Total other intangible assets subject to amortization	$	400	$	(60	)	$	340	$	400	$	(34	)	$	366

Finite-lived Intangible Assets Amortization Expense

Amortization associated with other intangible assets was as follows:

	Three Months Ended
	March 31, 2017
	(in millions)
Southern Company	$	35
Southern Power	$	6
Southern Company Gas	$	26